WO2015012736A1 - Method for transmitting and receiving radio signals - Google Patents

Abstract

The invention relates to methods for receiving and transmitting radio signals. The present method makes it possible to measure with a high degree of accuracy the spatial coordinates of radio objects transmitting radio signals. For this purpose, radio signals with given individual features and given time delays therebetween which provide for the consecutive arrival of the radio signals at a radio object situated at any location within a range of coverage and are known to the radio object, are transmitted consecutively as series from N≥5 consecutively numbered transmitting points within a ground-based radio signal transmitting system, the coordinates of the phase centres of the antennae of which are known to the radio object, and the times of arrival of said radio signals are recorded in a temporal framework set in the radio object. The coordinates of the phase centre of the antenna of a radio object are measured at a radio object using the proposed measurement equations on the basis of the above-mentioned coordinates and the times of arrival of the radio signals in a series which are identified according to the points of the ground-based transmitting system from which they were transmitted, taking into account, where necessary, the set time delays between the radio signals. The method makes it possible to measure other trajectory characteristics of a radio object using the radio object coordinates measured in series, using inter alia statistical trajectory measurement methods.

Description

 Title of invention:

 Method for transmitting and receiving radio signals

 Technical field

 The invention relates to communication technology, and more particularly, to methods for transmitting radio signals from a ground-based point transmitting radio signal system and receiving radio signals and extracting information in an information system located on a radio signal receiving radio object, stationary or mobile. Such systems include, in particular, radio navigation and radar systems, radio reconnaissance systems for radio equipment, radio surveillance of the Earth's surface, etc. [Radio systems / Yu.M. Kazarinov et al. Ed. Yu.M. Kazarinova. -M .: IC "Academy", 2008, p. 7]. Radio signals are transmitted synchronously by a ground-based point transmitting radio signals system, the phase centers of the transmitting antennas of each of the orderly numbered points transmitting radio signals of which, in an amount of at least five, are located at predetermined points with coordinates known to the receiving radio signals of the radio object. Implementation of the method will make it possible, among other things, to measure the spatial coordinates of radio objects receiving radio signals, simplify the corresponding information extraction systems, and increase their technical and economic efficiency, taking into account all components that affect cost and technical indicators.

 State of the art

Known methods for transmitting and receiving radio signals and retrieving information in an information system, used, inter alia, to measure the coordinates of radio objects and based on the application goniometer, rangefinder, difference and total rangefinder and combined methods for determining the location of an object with amplitude, time, frequency, phase and pulse-phase methods for measuring radio signal parameters [RF Patents N2N2 2018855, 2115137, 2258242, 2264598, 2309420, 2325666 , 23631 17, 2371737, 2378660; Fundamentals of Aircraft Testing / E.I. Krynetsky et al. Ed. E.I. Krinetskogo.-M .: Mashinostr., 1979, p. 64-89; Radio engineering systems / Yu.M. Kazarinov et al. Ed. Yu.M. Kazarinova. -M .: IC "Academy", 2008, p.17-18, pp. 7.1-7.4, ch. 10.; Melnikov Yu.P., Popov SV. Radio intelligence. Methods for assessing the effectiveness of the determination of radiation sources .- M .; Radio Engineering, 2008, Ch. 5]. Known methods have certain disadvantages, for example, the need for mechanical movement of the antenna system, the impossibility of unambiguous determination of the coordinates of an object, the need for a priori information about the location of an object, the need for general synchronization of radio objects transmitting and receiving radio signals, and insufficient reliability. According to the criterion of minimum sufficiency, the closest is the method of transmitting and receiving radio signals and extracting information in the information system according to patent RU Ns 2453999.

 Disclosure of invention

An advantage of the proposed method for transmitting and receiving radio signals and extracting information in an information system as compared with the known ones is the possibility of increasing the technical and economic efficiency of radio engineering complexes for measuring spatial coordinates and other characteristics of an object functionally related to its coordinates, including including, ensuring the accuracy and reliability of their measurement in accordance with modern requirements. This is achieved by the fact that, in particular, general synchronization of the aggregate of transmitting and receiving radio signals of radio engineering objects is not required. This simplifies the determination of spatial coordinates. The spatial coordinates are determined by indirect measurement using simple expressions that depend on the measured moments of the times of receiving radio signals at a radio object receiving radio signals. Also, the method eliminates the ambiguity of the measurement of coordinates.

To achieve the specified technical result in accordance with the present invention, in a method for transmitting and receiving radio signals at a ground-based point transmitting radio signal system and retrieving information in an information system located on a radio signal receiving radio object, stationary or mobile, the radio signals are transmitted synchronously a ground-based point transmitting radio signal system, phase centers of transmitting antennas of each of the orderly numbered point transmitting radio signals in which, in the amount of N, at least five are located at the points with coordinates Χ _η , Υ _η , Ζ _η , which are not located in the same plane and are known on the radio signal receiving radio object, where the index n changes ranges from 1 to N, respectively, in a given three-dimensional Cartesian coordinate system (Χ, Υ, Ζ), while the radio signals are transmitted in order by series, mainly one radio signal from each point transmitting radio signals in the series, with specified not necessarily the same intervals between series, if necessary and transmitting radio signals transmitted items with desired individual characteristics, including the complex and composite signals with predetermined individual features of the elements and the possibility of separation at the reception, and given if necessary, not necessarily the same and known for receiving radio signals from radio engineering objects by time delays between radio signals, radio signals are received at a particular radio signal receiving receiver, identify them to respective radio signal transmitting points, time moments of receiving radio signals at a radio receiving signal are recorded in the time reference system specified therein, if necessary the corresponding specified delay times, indicated moments of the time of reception of radio signals with the exception If necessary, the delay times are centered by eliminating from each moment of time the average value of all the moments of the series, and based on the thus recorded moments of time t _n, the parameters d _n are measured with a dimension of length d _n = vt _n , where υ is the propagation speed of the radio signal , with the information system been supposed signals radiotechnical parameters measured object through d _n and the said coordinates X _n, Y _n, Z _n measured parameters, where the index / is changed from 0 to 6, with the parameters _in pa dimensionality length chet- vortoy extent where the subscript j ranges from 1 to 6 and the parameters b _k with the dimension of the length of the fifth power, where the index k ranges from 1 to 3, into conformity with the measurement equations

η=1

Ν Ν Ν Ν

η = 1

 N N N N N N

 n = l n = l n = l n = l n = l n = 1

where the parameter £> ² = X _n ² + 7 „ ² + Z ² , through the parameters _j measure the parameters A _n where the index / varies from 0 to 6, in accordance with the measurement equations

a _x a _g a _g + 2 ₄ a ₅ a ₆ -α, α ₆ 2 -sg ₂ a ₅ 2-a _b a ₄ 2, A ₁ = a _{2 3} - ₆ 2, A ₂ = a _x a-a ₅ 2, A ₃ = a ₁ and ₂ -a ₄ 2

A _Q -, A ₄ = a ₅ a ₆ - a _b a ₄ , A ₅ = a ₄ a ₆ - a ₂ a ₅ , A ₆ = a ₄ a _b - α, α ₆ , (4) and the spatial coordinates of the phase the center of the receiving antenna receiving the radio signals of the radio object x, y, z is measured mainly through the parameters A, and b _k in accordance with the measurement equations

x = (A _l b _l + A ₄ b ₂ + A ₅ b ₃ ) / A ₀ , y = (A ₄ b + A ₂ b ₂ + A ₆ b ₃ ) / A ₀ , z = (AJ) + A ₆ b ₂ + A ₃ b ₃ ) I ^ if necessary, the series and all the indicated actions in them are repeated and other trajectory characteristics of this object are measured using the coordinates of the radio signal receiving radio signals x, y, z measured in the series, including using statistical methods of trajectory measurements, this information is displayed and transmitted to consumers, if necessary, if necessary, the transmitted information is received and displayed on a ground-based transmitting radio signal Istemi, moreover, if necessary terrestrial radio transmission punktovoy The system’s radio signals are also received at a ground-based ground receiving radio signal from a radio engineering object with the coordinates of the phase center of its receiving antenna x _K , y _K , z _K specified in the indicated three-dimensional Cartesian coordinate system (X, Υ, Z), mainly identical to the radio signal reception by radio signals receiving the radio signals - by an object, the coordinates χ ^, γ ^, ζ ^ of the phase center of the receiving antenna of the control ground receiving radio signals of a radio engineering object are measured identically to the specified coordinate measurement n receiving the radio signals of the radio engineering object and correct the indicated measured coordinates x, y, z of the receiving radio signals of the radio engineering object according to the known coordinates x _K , y _K , z _K and the measured coordinates x _KU , y _lcu , z _{KU of the} phase center of the receiving antenna control ground receiving radio signals of a radio engineering facility.

 In the current level of technology, no sources of information have been identified that would contain information about methods of the same purpose with the specified set of features. The invention is described in more detail below.

 The implementation of the invention

 The essence of the method is as follows.

Radio signals are transmitted synchronously by a ground-based point-transmitting radio signal system. The phase centers of the transmitting antennas of each of the orderly numbered transmitting radio signals points of this system, in an amount of N at least five, are located at specified points not located in the same plane with coordinates X _n , Y _n , Z _n , where the index varies from 1 to Ν, respectively, in a given three-dimensional Cartesian coordinate system (Χ, Υ, Ζ). These coordinates are known at the radio signal receiving radio engineering facility. In this case, the radio signals are transmitted in order by series, mainly by one radio signal from each The radio transmitting point in the series. The intervals between series are not necessarily the same. If necessary, transmitting radio signals points transmit radio signals with predetermined individual characteristics, including complex and composite radio signals with predetermined individual characteristics of their elements [L. Varakin. Theory of signal systems. M., "Owls. radio ”, 1978, p.18] and the possibility of their separation at reception. Also, if necessary, the radio signals are transmitted with predetermined, not necessarily the same, and time delays known between the radio signals receiving radio signals radio objects.

Radio signals are received at a particular radio object receiving radio signals and identified by their respective radio signal transmitting points. At this object, the moments of the times of receiving radio signals are recorded in the time reference system set on it. If necessary, exclude from them the corresponding specified delay times. The indicated times of reception of radio signals with excluded delay times are, if necessary, centered by eliminating from each moment of time the average value of all moments of the series. Based on the thus registered moments measured times t _n d _n parameters with dimensions of length d "= vt _n, where υ - velocity of propagation of a radio signal. In the information system of a radio object receiving radio signals, through the measured parameters d _n and the mentioned coordinates X _n , Y _n , Z _n measure the parameters c _t , where the index / varies from 1 to 6, in accordance with the measurement equations (1 ) Using the coordinates Χ _η , Υ _η , Ζ _η , the measured parameters d _n and c, measure the parameters a _} with a dimension of length to the fourth degree, where the index j varies from 1 to 6, in accordance with the measurement equations (2). Through the mentioned coordinates Χ _η , Υ _η , Ζ _η , the measured parameters d _n and c, measure parameters b _k, where the index k ranges from 1 to 3, in accordance with the measurement niyami equation (3). Through the measured parameters a _i, the parameters A, are measured, where the index / varies from 0 to 6, in accordance with the measurement equations (4). Finally, the spatial coordinates of the phase center of the host radio receiving antenna of radio engineering object x, y, z is measured preferably by the parameters A and L _{to the} measurement in accordance with equation (5).

 If necessary, the series and all the indicated actions in them are repeated and other trajectory characteristics of this object are measured using the coordinates of the radio signal receiving radio signals χ, γ, ζ measured in the series, including using statistical methods of path measurements. If necessary, this information is displayed and transmitted to consumers. If necessary, the information transmitted to consumers is received and displayed on a ground-based point transmitting radio signal system.

In addition, if necessary, the radio signals of the ground-based point transmitting radio signals of the system are also received at the control ground-receiving radio signals radio object with the coordinates of the phase center of its receiving antenna x _K , y _k specified in the indicated three-dimensional Cartesian coordinate system (Χ, Υ, Ζ) , ζ _κ . At the same time, at the indicated control object, the radio signals are received mainly identically to the reception of radio signals by the radio object receiving the radio signals. The coordinates x _KU , y _KU , z _{KU of the} phase center of the receiving antenna of the monitoring ground receiving radio signals of the radio engineering object are measured identically to the indicated measurement of the coordinates of the receiving radio signals of the radio engineering object. Then correct the χ, γ, ζ coordinates of the receiving radio signals of the radio engineering object according to the known coordinates x _K , y _K , z _K and the measured coordinates of the Hki 'Uki' ² ™ phase center of the receiving antenna of the control ground receiving radio signals of the radio engineering object.

 Industrial applicability

 We list the main advantages of the method:

 - provides an unambiguous determination of the spatial coordinates of the object with great accuracy that meets modern requirements,

- general synchronization of the aggregate of transmitting and receiving radio signals of radio engineering objects is not required,

 - provides the ability to make measurements using one of the known radio engineering methods and the existing elemental base and microprocessor technology,

 - the implementation of the method is simpler and cheaper than known analogues,

- spatial coordinates are determined by indirect measurement using simple expressions,

 - allows simultaneous measurements on an unlimited number of radio engineering objects.

 The effectiveness and efficiency of using the proposed method consists in the fact that it can be applied in practice for the development and improvement of radio engineering systems for determining, mainly, the coordinates of objects, as well as in other applications. The method allows to determine the coordinates with great accuracy and more simply in comparison with the known methods.

Thus, the claimed method provides the emergence of new properties not achieved in analogues. The analysis made it possible to establish: analogues with a set of features identical to all the features The claimed technical solutions are absent, which indicates the conformity of the claimed method to the “novelty” condition.

 Also, the popularity of the effect of the actions provided for by the essential features of the claimed invention on the achievement of the specified result was not revealed. Therefore, the claimed invention meets the condition of patentability "inventive step".

Claims

Claim A method for transmitting and receiving radio signals by a ground-based point-transmitting radio signal system and extracting information in an information system located on a radio signal-receiving radio object, stationary or mobile, in which radio signals transmit synchronously by a ground-based point-transmitting radio signal system, phase centers transmitting the antennas of each of the orderly numbered radio signal transmitting points of which, in an amount of N at least five, are in predetermined, not located in one th plane of, and known to the receiving radio Radiotechnical ob- ekte points with coordinates _{Χ η, Υ η, Ζ η} , where the index n ranges from 1 to N, respectively, in a predetermined three-dimensional Cartesian coordinate system (Χ, Υ, Ζ) , while the radio signals are transmitted in order by series, mainly one radio signal from each point transmitting the radio signals in the series, with not necessarily the same intervals between the series, if necessary, the transmitting radio signals points transmit radio signals with the specified individual and signs, including complex and composite radio signals with specified individual characteristics of their elements and the possibility of their separation at reception, and if necessary, with specified, not necessarily the same, and known delays in receiving radio signals from radio engineering objects in time neither between the radio signals, the radio signals are received at a particular radio object receiving the radio signals, identify them with the corresponding points transmitting the radio signals, register the times of receiving the radio signals at a radio object receiving radio signals in a time reference system set on it, if necessary, exclude from them the corresponding specified delay times indicated these moments of the reception of radio signals with excluded delay times, if necessary, are centered by eliminating from each moment of time the average value of all moments of the series, and based on the thus recorded moments of time t _n, the parameters d _n are measured with a dimension of length d _n = vt _n , where υ is the propagation speed of the radio signal, while in the information system of the receiving radio signals of the radio engineering object through the measured parameters d _n and the mentioned coordinates X _n , Y _n , Z _n measure the parameters c, where the index varies from 0 to 6, the parameters a _j with a dimension of length to the fourth degree, where the index j varies from 1 to 6, and the parameters b _to with the dimension of length to the fifth degree, where the index k varies from 1 to 3, according to the measurement equations

 Ν Ν Ν Ν  η =] = 1 = 1 «= 1

where the parameter D _n ² = x + Y + Z „ ² , through the parameters d, measure the parameters A, where the index / varies from 0 to 6, in accordance with the equations 2 2 2 2 2 2 SRI A _Q = a ₂ a _g + 2aa ₅ a ₆ - aa _b - a ₂ a ₅ - a ₃ a, A _x = a ₂ a-a _b , A ₂ = a _x a _b -a ₅ , A ₃ = a _x a _{2-a l} A ₄ - a ₅ a ₆ - a ₃ a ₄ , A _b = a ₄ a ₆ - a ₂ a ₅ , A ₆ = a ₄ a _{5-a x} a ₆ , and the spatial coordinates of the phase the center of the receiving antenna of the receiving radio signals of the radio engineering object χ, γ, ζ is measured mainly through the parameters A, and b _to in accordance with the measurement equations x = {Ab _x + Ab ₂ + A _i b _b ) IA _Q , y = (A ₄ b + A ₂ b ₂ + A ₆ b _J ) / A ₀ , z = [Ab _x + A ₆ b ₂ + A _g b _b) IA ^, if necessary, the series and all the indicated actions in them are repeated and other trajectory characteristics of this object are measured through the coordinates of the receiving radio signals of the radio object χ, γ, ζ measured in the series, including using statistical methods of path measurements, this information is displayed if necessary and transmit to consumers, if necessary, the transmitted information is received and displayed on the ground-based point transmitting radio signals system, in addition, if necessary, radio signals from the ground minutes punktovoy transmitting radio systems also take on ground control of the host radio radio facilities with specified in said three dimensional Cartesian coordinate system (Χ, Υ, Ζ) coordinates of the phase center of its receiving antenna x _K, y _K, z _K preferably identical reception radio receiver radio signals by a radio engineering object, they measure the coordinates of the phase center of the receiving antenna of the control ground receiving radio signals of the radio object identical to the specified measurement uw prinimayusche- coordinates radio signals of the radio object and correct the indicated measured coordinates x, y, z of the receiving radio signal of the radio object according to the known coordinates x _K , y _K , z _K and the measured coordinates ^x ki>Uki> ² ki of the phase center of the receiving antenna of the control ground receiving radio signals of a radio engineering facility.