WO2000070709A1 - Method and system for orienting a receiver - Google Patents
Method and system for orienting a receiver Download PDFInfo
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- WO2000070709A1 WO2000070709A1 PCT/ES2000/000170 ES0000170W WO0070709A1 WO 2000070709 A1 WO2000070709 A1 WO 2000070709A1 ES 0000170 W ES0000170 W ES 0000170W WO 0070709 A1 WO0070709 A1 WO 0070709A1
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- Prior art keywords
- antenna
- satellite
- orientation
- orienting
- mobile unit
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/02—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole
- H01Q3/08—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole for varying two co-ordinates of the orientation
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/005—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using remotely controlled antenna positioning or scanning
Definitions
- the present invention relates to a method for permanently keeping an antenna oriented, in order to optimally receive radio signals transmitted from satellites in orbit around the earth.
- the method of antenna orientation is of special application, but not exclusively, to a satellite dish incorporated into a means of collective and / or individual transport, for example a vehicle, so that in case it is moved, an optimum level of reception of the radio signal is maintained regardless of its nature (voice, data, video, television, etc.), as long as there is no obstacle between the antenna and the satellite source of the radio signal STATE OF THE TECHNIQUE
- satellite dishes are installed in residential users' homes for the same purpose.
- the installation of satellite dishes requires the presence of specialized personnel to perform a manual orientation at the time of installation.
- the present invention provides a method of automatic orientation of an antenna, for example parabolic antenna, installed in a means of transport, so that both during its movement and when it is parked it ensures the optimal reception of a radio signal transmitted from a certain satellite Likewise, the method is simple, fast and precise, requiring no manual intervention. Consequently, it is possible to view satellite television channels on a viewing medium such as television sets, incorporated in collective transport means and / or individual such as passenger buses, trains, a ship, etc.
- a viewing medium such as television sets, incorporated in collective transport means and / or individual such as passenger buses, trains, a ship, etc.
- the method for orienting the satellite dish is adapted to receive radio signals transmitted from a plurality of orbiting satellites, comprises a first receiving means in which the radio signal received from the selected satellite is concentrated, an inclinometer to determine the angle of elevation of the antenna, an indicator means to determine the degree of rotation in the clockwise or anti-clockwise direction of the antenna, an orientation means to move the antenna towards an orientation point which ensures the reception of an optimum level in the radio signal received, and such that the orientation method comprises the steps of 1 Selection of a satellite by means of a second data terminal connected to a control means, 2 Calculation of an orientation point by the control based on data relating to the orbit of the selected satellite, since the data is stored in a storage memory, 3 Generation of a first signal d and movement and of a second movement signal by the control, which are applied respectively to a first actuator means and a second actuator
- FIG. 1 shows an elevation view of the system for orienting an antenna according to the invention
- - Figure 3 shows a characteristic curve of the power received - deviation from the orientation according to the invention
- - Figure 4 shows in an electrical diagram the different modules included in the system for orienting the antenna according to the invention
- Figure 1 shows a system for orienting a receiver 11, for example an antenna, to receive radio signals S such as voice, data, video, television, etc., transmitted from a plurality of satellites in orbit around the Earth
- the orientation system of the receiver is suitable to be installed in an individual and / or collective means of transport such as a coach, boat, train, etc., from now on it will be referred to as the means of transport as a mobile unit, being able to be in motion or parked
- the orientation system will maintain an optimal orientation of the antenna 11 towards the satellite selected from among the satellite set, as long as there is no obstacle between the antenna 11 and the satellite
- the orientation system will be located on the mobile unit so that its location facilitates direct vision between the satellite and the antenna 11 For this reason, the air penetration coefficient of the mobile unit is penalized,
- the orientation system in order to achieve a coefficient of penetration into the air of the assembly, orientation system and mobile unit, as close to that of the mobile unit, the orientation system is housed in a sealed receptacle of reduced dimensions so that the variation of the air penetration coefficient of the mobile unit is minimal
- this receptacle will be covered with a protective means such as a dome so that it has a good air penetration coefficient, so that it is as close to zero as possible.
- a protective means such as a dome so that it has a good air penetration coefficient, so that it is as close to zero as possible.
- the receiving antenna 1 1 comprises a reflective surface 11-1 tai as a parabolic, flat surface, etc., assembled to an orientation means 12 responsible for moving the antenna 11 towards an orientation point PO in order to maintain the reception of an optimum level of the radio signal S, as long as there is no obstacle between the antenna 11 and the satellite
- the orientator 12 moves the reflecting surface 11-1 by means of an actuator arm 11-4
- the reflecting surface 1 1-1 concentrates the S signal into a first signal receiver 11-2 located at the focal point of the reflecting surface
- the first receiver 11-2 is mounted on one end of a support arm 11-3 fixed to the assembly formed by the reflecting surface 11-1 and to the actuator arm 11-4 Referring to Figure 2, a turn is defined in the direction of time ⁇ o / antihora ⁇ o 2-H on a horizontal plane defined by a vector parallel to the actuator arm 11-4
- a 2-E elevation angle is defined on a perpendicular surface at the measurement or iocalization point of the mobile unit, to the vector defined by the center of the earth and the measurement point An inclinometer
- the guide 12 for moving the antenna 11 comprises (not shown in Figure 1) a first actuator 12-1 to vary the elevation 2-E
- a half turn indicator 12-3 is located on the guide 12
- Both the first actuator 12-1 and the second actuator 12-2 respectively have a motor for fast and precise movements
- a processing means 13 programmed with an algorithm which carries out the control and supervision of the orientation of the antenna 1 1 at all times, that is, acquisition and monitoring of the selected satellite so that the level of signal S received is optimal
- the algorithm determines the optimal orientation point
- the orientation point PO of the antenna 11 will be within a range of orientation limited by a first predetermined value 3-A, upper limit, and a second predetermined value 3-B, lower limit, defined on the characteristic curve received power-deviation from the optimal orientation of an antenna
- Figure 3 shows the power-deviation curve for antenna 11, so that the power of the received radio signal S is represented on the ordinate axis, and the deviation from the abscissa axis is represented with respect to the optimum orientation of antenna 11
- the processor 13 includes a microprocessor for control and supervision, which has an associated circuitry to carry out the functions to be performed, a signal input / output unit, a storage memory 13-3 to store at least one orientation range , data relating to empty satellites in orbit around the earth, so that through a second data terminal 18, a manager can modify the data related to the orbit of each satellite, delete and enter new satellite data, perform the selection of the satellite to which the antenna 11 should be oriented
- the second terminal 18 is connected via conductors 18-1 to the processor 13, shown in Figure 4
- the processor 13 controls and monitors the movement of the antenna 11 so that it reaches the corresponding orientation point PO, for this purpose it generates a first movement signal 13-1 that is applied to the first actuator 12-1 by varying the elevation 2-E of the antenna 11 Y also generates a second movement signal 13-2 being respectively applied to the second actuator 12-2 so that the 2-H rotation of the antenna 11 is modified
- the processor will respectively generate the movement signals 13-1 and 13-2 at each instant based on a sample of the level of received signal S taken at the first receiver 11-2, an indication of the 2-E elevation received from the inclinometer 11-5, an indication of the 2-H turn received from indicator 12-3
- the processor 13 based on the signals described above obtains an operating point PO on the power-deviation curve, shown in Figure 3
- the algorithm varies the weight of parameters such as inclination 2-E, rotation 2-H This means that if the mobile unit is a ship, the variation of the 2-h turn will be less significant than the variation of the 2-E elevation (one movement predominates over the other) Consequently, at the time of installation, the type of mobile unit in which the guidance system is installed by means of the second data terminal 18 will be introduced.
- Operation point PO is it moves on the power-deviation curve as the mobile unit moves and / or in case of loss of the radio signal S, the processor 13 will carry out retries of the antenna 11 so that the operating point PO remains within the range of operation For this purpose it generates the corresponding movement signs 13-1 and
- the radio signal received S by the first receiver 1 1-2 is applied to a demodulator means 4 to be demodulated, not described as being known in the prior art.
- the demodulator 14 separates the different traffic (voice, data, video, television, etc.) contained within the received signal S and generates the respective output signals by directing them towards the corresponding reproduction means
- a first output signal S1 is supplied to display means 15 such as a television set, by which the passengers of the mobile unit watch a television channel, for example
- a second output signal S2 is applied to a sound reproducing medium 16 such as a loudspeaker, so that it is heard by the users, a third output signal S3 is sent to a first data terminal 17 such as a computer, if it is data
- a sound reproducing medium 16 such as a loudspeaker
- the processor 13 starts the orientation process once a satellite is selected from those stored in memory 13-3 and the type of mobile unit, the acquisition phase of the radio signal S begins, for which the corresponding ones are generated movement signals 13-1 and 13-2 in order to move the antenna 11 to the intended orientation point PO
- the processor 13 performs the control and supervision of the orientation of the antenna 11 based on a sample indicated by S, of elevation 2- E, of the 2-H turn and received respectively from the receiver 11-2, the inclinometer 11 -5 and the indicator 12-3, which correspond to a certain position of the mobile unit, and compares them with those stored at an earlier time
- the processor 13 determines the direction (ascending or descending) of movement of the operating point PO on the power-deflection curve, and defines the orientation point PO to which the movement must be moved.
- the control 13 maintains the antenna 11 at the last orientation point PO at which there was radio signal reception S, and a Once the reception of the radio signal S is recovered, the processor 13 based on the received signal S determines the next orientation point PO of the antenna 11 Once the operating point PO has been reached, the steps described above are repeated to maintain the orientation point PO within the orientation range and so that reception of an optimum level of received radio signal S is ensured
- the processor 13 is connected to a second receiving means 19 by means of conductors 19-1, to receive position data transmitted from an SPS satellite positioning system such as a worldwide GPS position determination system, and related to the mobile unit
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Abstract
Description
MÉTODO Y SISTEMA PARA ORIENTAR UN RECEPTOR OBJETO DE LA INVENCIÓNMETHOD AND SYSTEM FOR ORIENTING A RECEIVER OBJECT OF THE INVENTION
La presente invención se refiere a un método para mantener permanentemente orientada una antena, con el fin de recibir de modo óptimo señales de radio transmitidas desde satélites en órbita alrededor de la tierra El método de orientación de antenas es de especial aplicación, pero no exclusivamente, a una antena parabólica incorporada a un medio de transporte colectivo y/o individual, por ejemplo un vehículo, de modo que en caso de que se desplace se mantenga un nivel óptimo de recepción de la señal de radio con independencia de su naturaleza (voz, datos, vídeo, televisión, etc), siempre y cuando no haya ningún obstáculo entre la antena y el satélite origen de la señal de radio ESTADO DE LA TÉCNICAThe present invention relates to a method for permanently keeping an antenna oriented, in order to optimally receive radio signals transmitted from satellites in orbit around the earth. The method of antenna orientation is of special application, but not exclusively, to a satellite dish incorporated into a means of collective and / or individual transport, for example a vehicle, so that in case it is moved, an optimum level of reception of the radio signal is maintained regardless of its nature (voice, data, video, television, etc.), as long as there is no obstacle between the antenna and the satellite source of the radio signal STATE OF THE TECHNIQUE
Hasta hoy en día muchos establecimientos comerciales tales como hoteles, bares, centros de entretenimiento, etc, tienen instaladas antenas parabólicas con el fin de ofrecer un amplio abanico de canales de televisión vía satélite a sus clientesUntil today, many commercial establishments such as hotels, bars, entertainment centers, etc., have satellite dishes installed in order to offer a wide range of satellite television channels to their customers.
Asimismo, otras antenas parabólicas están instaladas en domicilios de usuarios residenciales con el mismo fin Sin embargo, la instalación de las antenas parabólicas requiere la presencia de personal especializado para realizar una orientación manual en el momento de la instalación de la mismaLikewise, other satellite dishes are installed in residential users' homes for the same purpose. However, the installation of satellite dishes requires the presence of specialized personnel to perform a manual orientation at the time of installation.
Cuando el usuario de una antena parabólica desea recibir la señal de radio transmitida por otro satélite, es preciso orientar la antena parabólica hacia el nuevo satélite que se desea recibir Por lo tanto, es preciso volver a requerir la presencia del personal especializado para realizar la reoπentación No obstante, es preciso en todos los casos conocer la posición del satélite cuya señal de radio se desea recibirWhen the user of a satellite dish wishes to receive the radio signal transmitted by another satellite, it is necessary to orient the satellite dish towards the new satellite that it is desired to receive. Therefore, it is necessary to require the presence of specialized personnel to perform the re-presentation However, it is necessary in all cases to know the position of the satellite whose radio signal you want to receive
El desplazamiento del personal especializado a la ubicación de la antena parabólica conlleva aparejados unos altos costes que deben ser sumados a la operación de reoπentación de la antena parabólica Los costes generados por la función de reonentación deben ser asumidos por el usuario de la antena parabólica, siendo ello un factor que dificulte la expansión de dicho sistema de recepción de señales de radio Cuando la antena parabólica está incorporada a un medio de transporte, el cual está tanto parado como en movimiento, dependiendo su velocidad de ¡as condiciones de circulación existentes en una vía de circulación tal como es una carretera, una calle de un entorno urbano, una ruta marítima, una ruta fluvial, una vía de ferrocarril, una ruta aérea, etc, hay que realizar continuas reonentaciones para recibir de modo óptimo la señal de radio transmitida desde el satéliteThe movement of specialized personnel to the location of the parabolic antenna entails high costs that must be added to the operation of re-presentation of the parabolic antenna. The costs generated by the regeneration function must be assumed by the user of the parabolic antenna, being this is a factor that hinders the expansion of said radio signal reception system When the satellite dish is incorporated into a means of transport, which is both stopped and moving, depending on the speed of the existing traffic conditions on a road such as a road, a street in an urban environment, a sea route, a waterway, a waterway railway, an air route, etc., continuous reonentations must be performed to optimally receive the radio signal transmitted from the satellite
La realización manual del proceso de reoπentación continuo de la antena parabólica resulta inviable, por ejemplo por seguridad del personal encargado de realizar dicho proceso, por imposibilidad de calcular la corrección de la orientación, se desconoce la posición relativa del medio de transporte en cada instante de su trayectoriaThe manual realization of the process of continuous re-presentation of the parabolic antenna is unfeasible, for example for the safety of the personnel in charge of carrying out said process, because of the impossibility of calculating the orientation correction, the relative position of the means of transport at every moment of his trajectory
Por tanto, se hace necesario el desarrollar un método de orientación de una antena instalada en un medio de transporte, con el fin de asegurar que durante el movimiento del mismo se siga recibiendo de forma óptima la señal de radio transmitida desde un satélite en órbita alrededor de la tierra, siendo realizada la operación de orientación de modo continuo sin intervención manualTherefore, it is necessary to develop a method of orientation of an antenna installed in a means of transport, in order to ensure that during the movement of the antenna the radio signal transmitted from a satellite in orbit around is still optimally received of the land, the orientation operation being carried out continuously without manual intervention
La presente invención proporciona un método de orientación automática de una antena, por ejemplo antena parabólica, instalada en un medio de transporte, de modo que tanto durante su desplazamiento como cuando está estacionado se asegura la recepción de modo óptimo de una señal de radio transmitida desde un determinado satélite Asimismo, el método es simple, rápido y preciso no requiriendo ninguna intervención manual Consecuentemente, se posibilita la visualización de canales de televisión vía satélite en unos medios de visualización tales como aparatos de televisión, incorporados en medios de transporte colectivos y/o individuales tales como en autobuses de pasajeros, un trenes, un barco, etcThe present invention provides a method of automatic orientation of an antenna, for example parabolic antenna, installed in a means of transport, so that both during its movement and when it is parked it ensures the optimal reception of a radio signal transmitted from a certain satellite Likewise, the method is simple, fast and precise, requiring no manual intervention. Consequently, it is possible to view satellite television channels on a viewing medium such as television sets, incorporated in collective transport means and / or individual such as passenger buses, trains, a ship, etc.
No obstante, también es posible instalarlo en entornos residenciales tales como edificios, casas, etcHowever, it is also possible to install it in residential environments such as buildings, houses, etc.
CARACTERIZACIÓN DE LA INVENCIÓNCHARACTERIZATION OF THE INVENTION
Para resolver los problemas anteriormente descritos se ha propuesto un método para orientar un receptor de señales de radio tal como una antena parabólica, y las cuales son transmitidas desde un satélite en órbita alrededor de la tierra El método para orientar la antena parabólica está adaptado para recibir señales de radio transmitidas desde una pluralidad de satélites en órbita, comprende un primer medio receptor en el cual es concentrada la señal de radio recibida desde el satélite seleccionado, un inclinómetro para determinar el ángulo de elevación de la antena, un medio indicador para determinar el grado de giro en el sentido horario o antihoraπo de la antena, un medio orientador para mover la antena hacia un punto de orientación el cual asegura la recepción de un nivel óptimo en la señal de radio recibida, y tal que el método de orientación comprende los pasos de 1 Selección de un satélite por medio de un segundo terminal de datos conectado a un medio de control, 2 Cálculo de un punto de orientación por el control en base a unos datos relativos a la órbita del satélite seleccionado, ya que los datos están almacenados en una memoria de almacenamiento, 3 Generación de una primera señal de movimiento y de una segunda señal de movimiento por el control, las cuales son aplicadas respectivamente a un primer medio accionador y a un segundo medio accionador, de modo que la antena es movida al punto de orientación,To solve the problems described above, a method has been proposed to orient a radio signal receiver such as a satellite dish, and which are transmitted from an orbiting satellite around the earth. The method for orienting the satellite dish is adapted to receive radio signals transmitted from a plurality of orbiting satellites, comprises a first receiving means in which the radio signal received from the selected satellite is concentrated, an inclinometer to determine the angle of elevation of the antenna, an indicator means to determine the degree of rotation in the clockwise or anti-clockwise direction of the antenna, an orientation means to move the antenna towards an orientation point which ensures the reception of an optimum level in the radio signal received, and such that the orientation method comprises the steps of 1 Selection of a satellite by means of a second data terminal connected to a control means, 2 Calculation of an orientation point by the control based on data relating to the orbit of the selected satellite, since the data is stored in a storage memory, 3 Generation of a first signal d and movement and of a second movement signal by the control, which are applied respectively to a first actuator means and a second actuator means, so that the antenna is moved to the orientation point,
4 Recálculo del punto de orientación por el medio de control en base a una muestra de la señal de radio recibida, a! ángulo de elevación, al grado de giro, con el fin de mantener un nivel óptimo de la señal de radio recibida dentro de un predeterminado rango de orientación de forma que la antena esté orientada al satélite seleccionado en todo instante,4 Recalculation of the orientation point by the control means based on a sample of the received radio signal, a! elevation angle, to the degree of rotation, in order to maintain an optimum level of the received radio signal within a predetermined orientation range so that the antenna is oriented to the selected satellite at all times,
5 Repetición de los pasos 3) y 4) por el control con el fin de mantener el punto de orientación permanentemente dentro del rango de orientación5 Repeat steps 3) and 4) by the control in order to keep the orientation point permanently within the orientation range
BREVE ENUNCIADO DE LAS FIGURASBRIEF STATEMENT OF THE FIGURES
Una explicación más detallada de la invención se da en la siguiente descripción basada en las figuras adjuntas en las queA more detailed explanation of the invention is given in the following description based on the attached figures in which
- la figura 1 muestra una vista del alzado del sistema para orientar una antena de acuerdo con la invención,- Figure 1 shows an elevation view of the system for orienting an antenna according to the invention,
- la figura 2 muestra en la vista del alzado una indicación de los movimientos que realiza la antena para mantener la orientación de acuerdo con la invención,- Figure 2 shows in the elevation view an indication of the movements performed by the antenna to maintain the orientation according to the invention,
- la figura 3 muestra una curva característica de la potencia recibida- desviación respecto de la orientación de acuerdo con ¡a invención, y - la figura 4 muestra en un esquema eléctrico los diferentes módulos comprendidos en el sistema para orientar la antena de acuerdo con la invención- Figure 3 shows a characteristic curve of the power received - deviation from the orientation according to the invention, and - Figure 4 shows in an electrical diagram the different modules included in the system for orienting the antenna according to the invention
DESCRIPCIÓN DE LA INVENCIÓN La figura 1 muestra un sistema para orientar un receptor 11 , por ejemplo una antena, para recibir señales de radio S tales como voz, datos, vídeo, televisión, etc, transmitidas desde una pluralidad de satélites en órbita alrededor de la tierraDESCRIPTION OF THE INVENTION Figure 1 shows a system for orienting a receiver 11, for example an antenna, to receive radio signals S such as voice, data, video, television, etc., transmitted from a plurality of satellites in orbit around the Earth
El sistema de orientación del receptor es idóneo para ser instalado en un medio de transporte individual y/o colectivo tal como un autocar, barco, tren, etc, de aquí en adelante será denominado el medio de transporte como unidad móvil, pudiendo estar en movimiento o estacionadoThe orientation system of the receiver is suitable to be installed in an individual and / or collective means of transport such as a coach, boat, train, etc., from now on it will be referred to as the means of transport as a mobile unit, being able to be in motion or parked
El sistema de orientación mantendrá una óptima orientación de la antena 11 hacia el satélite seleccionado de entre el conjunto de satélites, siempre y cuando no haya ningún obstáculo entre la antena 11 y el satéliteThe orientation system will maintain an optimal orientation of the antenna 11 towards the satellite selected from among the satellite set, as long as there is no obstacle between the antenna 11 and the satellite
Para lograr tal fin, el sistema de orientación será localizado sobre la unidad móvil de modo que su localización facilite la visión directa entre el satélite y la antena 11 Por tal motivo, el coeficiente de penetración en el aire de la unidad móvil se ve penalizado, aumenta Sin embargo, para lograr un coeficiente de penetración en el aire del conjunto, sistema de orientación y unidad móvil, lo más próximo al de la unidad móvil, el sistema de orientación es alojado en un receptáculo estanco de dimensiones reducidas para que la variación del coeficiente de penetración en el aire de la unidad móvil sea mínima En aquellos casos en que la unidad móvil disponga de un receptáculo apropiado para que el sistema orientador sea alojado total o parcialmente en él, este receptáculo estará cubierto con un medio protector tal como una cúpula de forma que presente un buen coeficiente de penetración en el aire, con el fin de que sea lo más próximo a cero El receptáculo además tiene la función de proteger al sistema orientador de inclemencias climáticas tales como el viento, la lluvia, etc, o de ambientes nocivos tales como entornos marinosTo achieve this, the orientation system will be located on the mobile unit so that its location facilitates direct vision between the satellite and the antenna 11 For this reason, the air penetration coefficient of the mobile unit is penalized, However, in order to achieve a coefficient of penetration into the air of the assembly, orientation system and mobile unit, as close to that of the mobile unit, the orientation system is housed in a sealed receptacle of reduced dimensions so that the variation of the air penetration coefficient of the mobile unit is minimal In those cases where the mobile unit has an appropriate receptacle so that the guidance system is fully or partially housed in it, this receptacle will be covered with a protective means such as a dome so that it has a good air penetration coefficient, so that it is as close to zero as possible. more has the function of protecting the guidance system from inclement weather such as wind, rain, etc., or from harmful environments such as marine environments
En referencia a la figura 1 , la antena receptora 1 1 comprende una superficie reflectora 11-1 tai como una superficie parabólica, plana, etc, ensamblada a un medio de orientación 12 encargado de mover la antena 11 hacia un punto de orientación PO con el fin de mantener la recepción de un nivel óptimo de la señal de radio S, siempre y cuando no haya ningún obstáculo ente la antena 11 y el satélite El orientador 12 mueve la superficie reflectora 11-1 por medio de un brazo accionador 11-4 La superficie reflectora 1 1-1 concentra la señal S en un primer receptor de señales 11-2 ubicado en el punto focal de la superficie reflectoraReferring to Figure 1, the receiving antenna 1 1 comprises a reflective surface 11-1 tai as a parabolic, flat surface, etc., assembled to an orientation means 12 responsible for moving the antenna 11 towards an orientation point PO in order to maintain the reception of an optimum level of the radio signal S, as long as there is no obstacle between the antenna 11 and the satellite The orientator 12 moves the reflecting surface 11-1 by means of an actuator arm 11-4 The reflecting surface 1 1-1 concentrates the S signal into a first signal receiver 11-2 located at the focal point of the reflecting surface
1 -1 El primer receptor 11-2 está montado en un extremo de un brazo soporte 11-3 fijado al conjunto formado por la superficie reflectora 11-1 y al brazo accionador 11-4 En referencia a la figura 2, se define un giro en el sentido horaπo/antihoraπo 2-H sobre un plano horizontal definido por un vector paralelo al brazo accionador 11-41 -1 The first receiver 11-2 is mounted on one end of a support arm 11-3 fixed to the assembly formed by the reflecting surface 11-1 and to the actuator arm 11-4 Referring to Figure 2, a turn is defined in the direction of timeπo / antihoraπo 2-H on a horizontal plane defined by a vector parallel to the actuator arm 11-4
También, se define un ángulo de elevación 2-E sobre una superficie perpendicular en el punto de medida o iocalización de la unidad móvil, al vector definido por el centro de la tierra y el punto de medida Un inclmómetroAlso, a 2-E elevation angle is defined on a perpendicular surface at the measurement or iocalization point of the mobile unit, to the vector defined by the center of the earth and the measurement point An inclinometer
11-5, ubicado sobre el primer receptor 11-2, mide en cada instante el valor del ángulo de elevación 2-E11-5, located on the first receiver 11-2, measures at every moment the value of the elevation angle 2-E
Volviendo a la figura 1 , el orientador 12 para mover la antena 11 comprenden (no se muestra en la figura 1 ) un primer accionador 12-1 para variar la elevación 2-E Un segundo accionador 12-2 para modificar el giro en el horaπo/antihoraπo 2-H Un medio indicador del giro 12-3 está localizado en el orientador 12Returning to Figure 1, the guide 12 for moving the antenna 11 comprises (not shown in Figure 1) a first actuator 12-1 to vary the elevation 2-E A second actuator 12-2 to modify the rotation in the time π / antihoraπo 2-H A half turn indicator 12-3 is located on the guide 12
Tanto el primer accionador 12-1 , como el segundo accionador 12-2 tienen respectivamente un motor para realizar movimientos rápidos y precisosBoth the first actuator 12-1 and the second actuator 12-2 respectively have a motor for fast and precise movements
En referencia a la figura 4, unos medios procesadores 13 programados con un algoritmo el cual lleva a cabo el control y supervisión de la orientación de la antena 1 1 en todo instante, esto es, adquisición y seguimiento del satélite seleccionado de modo que el nivel de señal S recibida sea óptimo El algoritmo determina el óptimo punto de orientaciónReferring to Figure 4, a processing means 13 programmed with an algorithm which carries out the control and supervision of the orientation of the antenna 1 1 at all times, that is, acquisition and monitoring of the selected satellite so that the level of signal S received is optimal The algorithm determines the optimal orientation point
PO en base a parámetros tales como el valor de la inclinación 2-E, el giro 2-PO based on parameters such as the tilt value 2-E, rotation 2-
HH
Para lograrlo, el punto de orientación PO de la antena 11 estará comprendido dentro de un rango de orientación limitado por un primer valor predeterminado 3-A, límite superior, y un segundo valor predeterminado 3-B, límite inferior, definido sobre la curva característica potencia recibida- desviación respecto a la orientación óptima de una antenaTo achieve this, the orientation point PO of the antenna 11 will be within a range of orientation limited by a first predetermined value 3-A, upper limit, and a second predetermined value 3-B, lower limit, defined on the characteristic curve received power-deviation from the optimal orientation of an antenna
La figura 3 muestra la curva potencia-desviación para la antena 11 , de forma que en el eje de ordenadas está representada la potencia de la señal de radio recibida S, y en el eje de abscisas está representada la desviación respecto a la orientación óptima de la antena 11Figure 3 shows the power-deviation curve for antenna 11, so that the power of the received radio signal S is represented on the ordinate axis, and the deviation from the abscissa axis is represented with respect to the optimum orientation of antenna 11
El procesador 13 incluye un microprocesador para control y supervisión, el cual tiene una circuitería asociada para llevar a cabo las funciones a realizar , una unidad de entrada/salida de señales, una memoria de almacenamiento 13-3 para almacenar al menos un rango de orientación, datos relativos a vanos satélites en órbita alrededor de la tierra, de manera que por medio de un segundo terminal de datos 18, un encargado pueda modificar los datos relativos a la órbita de cada satélite, elimine e introduzca datos de nuevos satélite, realice la selección del satélite al cual la antena 11 debe estar orientada El segundo terminal 18 está conectado vía unos conductores 18-1 al procesador 13, mostrado en la figura 4The processor 13 includes a microprocessor for control and supervision, which has an associated circuitry to carry out the functions to be performed, a signal input / output unit, a storage memory 13-3 to store at least one orientation range , data relating to empty satellites in orbit around the earth, so that through a second data terminal 18, a manager can modify the data related to the orbit of each satellite, delete and enter new satellite data, perform the selection of the satellite to which the antenna 11 should be oriented The second terminal 18 is connected via conductors 18-1 to the processor 13, shown in Figure 4
El procesador 13 controla y supervisa el movimiento de la antena 11 para que alcance el correspondiente punto de orientación PO, con tal fin genera una primera señal de movimiento 13-1 que es aplicada al primer accionador 12-1 variando la elevación 2-E de la antena 11 Y también genera una segunda señal de movimiento 13-2 siendo respectivamente aplicada al segundo accionador 12-2 de modo que se modifica el giro 2-H de la antena 11The processor 13 controls and monitors the movement of the antenna 11 so that it reaches the corresponding orientation point PO, for this purpose it generates a first movement signal 13-1 that is applied to the first actuator 12-1 by varying the elevation 2-E of the antenna 11 Y also generates a second movement signal 13-2 being respectively applied to the second actuator 12-2 so that the 2-H rotation of the antenna 11 is modified
El procesador generará respectivamente las señales de movimiento 13-1 y 13-2 en cada instante en base a una muestra del nivel de señal recibida S tomado en el primer receptor 11-2, una indicación de la elevación 2-E recibido desde el inclinómetro 11-5, una indicación del giro 2-H recibido desde el indicador 12-3The processor will respectively generate the movement signals 13-1 and 13-2 at each instant based on a sample of the level of received signal S taken at the first receiver 11-2, an indication of the 2-E elevation received from the inclinometer 11-5, an indication of the 2-H turn received from indicator 12-3
Resumiendo, el procesador 13 en base a las señales anteriormente descritas obtiene un punto de operación PO sobre ¡a curva potencia- desviación, mostrada en la figura 3In summary, the processor 13 based on the signals described above obtains an operating point PO on the power-deviation curve, shown in Figure 3
En función del tipo de unidad móvil en el que el sistema orientador este instalado, el algoritmo varia el peso de parámetros tales como la inclinación 2-E, el giro 2-H Esto significa, que si ia unidad móvil es un barco, la variación del giro 2-h sera menos significativa que la variación de la elevación 2-E (predomina un movimiento sobre el otro) Consecuentemente, en el momento de la instalación, se introducirá el tipo de unidad móvil en el cual es instalado el sistema orientador por medio del segundo terminal de datos 18 El punto de operación PO se desplaza sobre la curva potencia- desviación según se mueve la unidad móvil y/o en caso de pérdida de la señal de radio S, el procesador 13 llevará a cabo reonentaciones de la antena 11 para que el punto de operación PO permanezca dentro del rango de operación Con tal fin genera las correspondientes señaies de movimiento 13-1 yDepending on the type of mobile unit in which the guidance system is installed, the algorithm varies the weight of parameters such as inclination 2-E, rotation 2-H This means that if the mobile unit is a ship, the variation of the 2-h turn will be less significant than the variation of the 2-E elevation (one movement predominates over the other) Consequently, at the time of installation, the type of mobile unit in which the guidance system is installed by means of the second data terminal 18 will be introduced. Operation point PO is it moves on the power-deviation curve as the mobile unit moves and / or in case of loss of the radio signal S, the processor 13 will carry out retries of the antenna 11 so that the operating point PO remains within the range of operation For this purpose it generates the corresponding movement signs 13-1 and
13-2 con las cuales trata de mantener el punto de operación PO, en todo instante, lo más cerca del limite superior 3-A ya que permite obtener una mayor potencia en la señal S recibida y una mínima desviación de la orientación óptima, representada por el punto de inflexión de la la curva potencia-desviación13-2 with which it tries to maintain the operating point PO, at all times, as close to the upper limit 3-A as it allows to obtain a greater power in the received signal S and a minimum deviation from the optimal orientation, represented by the inflection point of the power-deviation curve
Volviendo a la figura 4, la señal de radio recibida S por el primer receptor 1 1-2 es aplicada a un medio demodulador 4 para ser demodulada, no descritos por ser conocidos en el estado de la técnicaReturning to Figure 4, the radio signal received S by the first receiver 1 1-2 is applied to a demodulator means 4 to be demodulated, not described as being known in the prior art.
El demodulador 14 separa los diferentes tráficos (voz, datos, vídeo, televisión, etc) contenidos dentro de la señal recibida S y genera las respectivas señales de salida direccionándolas hacia los correspondientes medios de reproducciónThe demodulator 14 separates the different traffic (voice, data, video, television, etc.) contained within the received signal S and generates the respective output signals by directing them towards the corresponding reproduction means
Así, una primera señal de salida S1 es suministrada a unos medios visualizadores 15 tales como un aparato de televisión, por el cual los pasajeros de la unidad móvil ven un canal de televisión, por ejemploThus, a first output signal S1 is supplied to display means 15 such as a television set, by which the passengers of the mobile unit watch a television channel, for example
En el caso de ser voz, una segunda señal de salida S2 es aplicada a un medio reproductor de sonido 16 tal como un altavoz, para que sea escuchado por los usuarios, una tercera señal de salida S3 es enviada a un primer terminal de datos 17 tal como un ordenador, en caso de ser datos En una realización preferida del método de orientación de la antenaIn the case of being a voice, a second output signal S2 is applied to a sound reproducing medium 16 such as a loudspeaker, so that it is heard by the users, a third output signal S3 is sent to a first data terminal 17 such as a computer, if it is data In a preferred embodiment of the antenna orientation method
11 , el procesador 13 inicia el proceso de orientación una vez seleccionado un satélite de los almacenados en la memoria 13-3 y el tipo de unidad móvil, comienza la fase de adquisición de la señal de radio S, para lo cual son generadas las correspondiente señales de movimiento 13-1 y 13-2 con el fin de mover la antena 11 al previsto punto de orientación PO Una vez alcanzado el punto de orientación PO definido por ios datos almacenados en la memoria 13-3, el procesador 13 realiza el control y supervisión de la orientación de la antena 11 en base a una muestra se la señale S, de la elevación 2-E, del giro 2-H y recibidas respectivamente desde el receptor 11-2, el inclinómetro 11 -5 y el indicador 12-3, las cuales corresponden a una posición determinada de la unidad móvil, y las compara con almacenadas en un instante anterior11, the processor 13 starts the orientation process once a satellite is selected from those stored in memory 13-3 and the type of mobile unit, the acquisition phase of the radio signal S begins, for which the corresponding ones are generated movement signals 13-1 and 13-2 in order to move the antenna 11 to the intended orientation point PO Once the orientation point PO defined by the data stored in the memory 13-3 is reached, the processor 13 performs the control and supervision of the orientation of the antenna 11 based on a sample indicated by S, of elevation 2- E, of the 2-H turn and received respectively from the receiver 11-2, the inclinometer 11 -5 and the indicator 12-3, which correspond to a certain position of the mobile unit, and compares them with those stored at an earlier time
Una vez evaluadas las variaciones habidas en cada una de ellas, el procesador 13 determina el sentido (ascendente o descendente) de desplazamiento del punto de operación PO sobre la curva potencia- desvicación, y define el punto de orientación PO al que debe ser movida la antena 11 , generando las correspondientes señales de movimiento 13-1 yOnce the variations in each of them have been evaluated, the processor 13 determines the direction (ascending or descending) of movement of the operating point PO on the power-deflection curve, and defines the orientation point PO to which the movement must be moved. antenna 11, generating the corresponding movement signals 13-1 and
13-2 con las que la antena 11 mantiene el nivel óptimo en la señal S recibida13-2 with which the antenna 11 maintains the optimum level in the received signal S
En el caso de que la antena 11 no vea directamente el satélite, zona oscura de recepción tal como un túnel, ei control 13 mantiene la antena 11 en el último punto de orientación PO en el cual había recepción de señal de radio S, y una vez que recupera la recepción de la señal de radio S, el procesador 13 en base a la señal S recibida determina el próximo punto de orientación PO de la antena 11 Una vez alcanzado el punto de operación PO se repiten los pasos anteriormente descritos para mantener el punto de orientación PO dentro del rango de orientación y de modo que se asegura la recepción de un nivel óptimo de señal de radio recibida SIn the event that the antenna 11 does not directly see the satellite, a dark reception area such as a tunnel, the control 13 maintains the antenna 11 at the last orientation point PO at which there was radio signal reception S, and a Once the reception of the radio signal S is recovered, the processor 13 based on the received signal S determines the next orientation point PO of the antenna 11 Once the operating point PO has been reached, the steps described above are repeated to maintain the orientation point PO within the orientation range and so that reception of an optimum level of received radio signal S is ensured
Para facilitar el funcionamiento del sistema orientador acelerando el posicionamiento tanto inicial de la antena 11 como durante el movimiento de la unidad móvil, el procesador 13 es conectado a un segundo medio receptor 19 por medio de unos conductores 19-1 , para recibir datos de posición transmitidos desde un sistema de posicionamiento por satélite SPS tal como un sistema mundial de determinación de posición GPS, y relativos a la unidad móvilTo facilitate the operation of the guidance system by accelerating the initial positioning of the antenna 11 as well as during the movement of the mobile unit, the processor 13 is connected to a second receiving means 19 by means of conductors 19-1, to receive position data transmitted from an SPS satellite positioning system such as a worldwide GPS position determination system, and related to the mobile unit
Lo descrito anteriormente se ha tomado como un ejemplo para poder realizar una mejor descripción de la invención, no limitado el alcance de la invención a la realización descrita The above described has been taken as an example to be able to make a better description of the invention, not limited the scope of the invention to the described embodiment.
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ESP9901060 | 1999-05-18 | ||
| ES009901060A ES2152894B1 (en) | 1999-05-18 | 1999-05-18 | METHOD AND SYSTEM FOR ORIENTING A RECEIVER |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2000070709A1 true WO2000070709A1 (en) | 2000-11-23 |
Family
ID=8308449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/ES2000/000170 Ceased WO2000070709A1 (en) | 1999-05-18 | 2000-05-08 | Method and system for orienting a receiver |
Country Status (2)
| Country | Link |
|---|---|
| ES (1) | ES2152894B1 (en) |
| WO (1) | WO2000070709A1 (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4841303A (en) * | 1987-07-01 | 1989-06-20 | Mobile Satellite Corporation | Low cost method and system for automatically steering a mobile directional antenna |
| WO1994023469A1 (en) * | 1993-03-31 | 1994-10-13 | Kvh Industries, Inc. | Two axis mount pointing apparatus |
| US5521604A (en) * | 1994-01-24 | 1996-05-28 | Nec Corporation | Tracking system for vehicle-mounted antenna |
| US5583514A (en) * | 1994-03-07 | 1996-12-10 | Loral Aerospace Corp. | Rapid satellite acquisition device |
| ES2113809A1 (en) * | 1995-10-20 | 1998-05-01 | Video Bus Paher S A | Multidirectional, multipurpose aerial for use in vehicles in general. |
| US5854609A (en) * | 1996-12-02 | 1998-12-29 | Electronics And Telecommunications Research Institute | Satellite tracking method for vehicle-mounted antenna system |
-
1999
- 1999-05-18 ES ES009901060A patent/ES2152894B1/en not_active Expired - Fee Related
-
2000
- 2000-05-08 WO PCT/ES2000/000170 patent/WO2000070709A1/en not_active Ceased
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4841303A (en) * | 1987-07-01 | 1989-06-20 | Mobile Satellite Corporation | Low cost method and system for automatically steering a mobile directional antenna |
| WO1994023469A1 (en) * | 1993-03-31 | 1994-10-13 | Kvh Industries, Inc. | Two axis mount pointing apparatus |
| US5521604A (en) * | 1994-01-24 | 1996-05-28 | Nec Corporation | Tracking system for vehicle-mounted antenna |
| US5583514A (en) * | 1994-03-07 | 1996-12-10 | Loral Aerospace Corp. | Rapid satellite acquisition device |
| ES2113809A1 (en) * | 1995-10-20 | 1998-05-01 | Video Bus Paher S A | Multidirectional, multipurpose aerial for use in vehicles in general. |
| US5854609A (en) * | 1996-12-02 | 1998-12-29 | Electronics And Telecommunications Research Institute | Satellite tracking method for vehicle-mounted antenna system |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2152894A1 (en) | 2001-02-01 |
| ES2152894B1 (en) | 2002-08-16 |
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