WO1999024849A1 - Radio-localisation probing method and differential radar device for realising the same - Google Patents
Radio-localisation probing method and differential radar device for realising the same Download PDFInfo
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- WO1999024849A1 WO1999024849A1 PCT/RU1998/000362 RU9800362W WO9924849A1 WO 1999024849 A1 WO1999024849 A1 WO 1999024849A1 RU 9800362 W RU9800362 W RU 9800362W WO 9924849 A1 WO9924849 A1 WO 9924849A1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/12—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with electromagnetic waves
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/885—Radar or analogous systems specially adapted for specific applications for ground probing
Definitions
- the method is used to distribute the capacity of a non-ferrous layer in a foreign well in the borehole. Emission of two signals in the case of a positive effect increases the reception of antennas in the case of a single medium; a weak sum signal is used, which increases the amplification of the amplified When a signal appears near one of the transmitting antennas of a consumer area that are distinguished by a dielectric property, the signal received is subject to change. You should be able to judge the proximity of the division’s territory to a separate transmitting antenna. However, there is no way that they will not be protected.
- Implementation of the method consumes the radar of the radar and the elbow of the sonar, excluded the processing and registration of signals.
- Each locator contains a signal transmitter and receiver.
- ch ⁇ not ⁇ zv ⁇ lyae ⁇ is ⁇ lz ⁇ va ⁇ eg ⁇ for ⁇ is ⁇ v menshi ⁇ in s ⁇ avnenii with dlin ⁇ y v ⁇ lny and apel ⁇ y ne ⁇ dn ⁇ dn ⁇ s ⁇ ey, slab ⁇ di ⁇ e ⁇ entsi ⁇ vanny ⁇ ⁇ ele ⁇ iches ⁇ im ⁇ a ⁇ ame ⁇ am s ⁇ s ⁇ ed ⁇ y.
- the device is equipped with a testimonial 811 ⁇ 1464728, 01 V 3/12, 04/22/08 is the closest analogue.
- Antennas are located at a specified distance from each other. The outputs of the transmitting units are sent to the input of the processing and recording channel, where the intensity of the echo signals and the time of the delay are changed.
- the device is inherently disadvantageous to the same author's certificate, which leads to limited use of it.
- the optional antennas can be equipped with a sim- ilarly different transmitter and a pair of transmitter antennas. in one area with an antenna transmitter and there is no transmitting antenna for a given
- FIG. 1 the device is shown a block diagram of the device that implements the proposed system
- FIG. 2 are shown variants of the location of the transmitter and the receiver
- the block circuitry is shown in FIG. 1.
- the block of the radar in Fig. 2 provides a transmitting antenna of 7 and, located in a sym- metically negative transmitter, two receiving 8 and 9 vibrational antennas.
- the units are made from a metal pipe of a uniform diameter and close length.
- the transmitting antenna in Fig. 2a) is located between the research and the receiving antennas on the same antenna output in each of the 0.2–0.3-antenna antennas. Both receiver antennas are located in a flat, parallel area of research and parallel transmitter area. The sizes of the receiver antennas are the same and each 1.04 - 1.1 is the length of the transmitting antenna - /. In general, the antennas form an equidistant section of the transverse section, located in the region of this section.
- Receiver antennas in FIG. 26 It is located between the degree of research and the transmitting antenna on the same transmitter transmitting antenna in the distance of 0.2 - 0.3 of its length.
- the sizes of the receiver antennas are the same and make up 0.9 - 0.96 lengths of the transmitting antenna.
- the receiver antennas in FIG. The distance between the transmitting and receiving antennas is 0.2 - 0.3 times the length of the transmitting antenna. and the size of the closest connection to the receiver antenna is 0.9 to 0.96 times the length of the transmitting antenna, and the length of the second antenna is 1.04 to 1.1 times the length of the antenna.
- a positive reactive component has a symmetrical vibration length> 1/2 ⁇ (I - vibration length. ⁇ - length
- excited waves i.e., longer than the first resonant length.
- the input of the directorate must have a negative phase. This means that a reactive component of the input must have a negative symbol (must have a capacitive character).
- the low capacitance of the capacitor has a symmetrical vibrator /> 1/2 ⁇ (shorter than the resonant length).
- ch ⁇ by ⁇ bes ⁇ echi ⁇ in bl ⁇ e l ⁇ a ⁇ a is ⁇ lz ⁇ vanie ⁇ iomny ⁇ an ⁇ enn in ⁇ aches ⁇ ve ⁇ e ⁇ le ⁇ v for izluchaem ⁇ g ⁇ z ⁇ ndi ⁇ uyuscheg ⁇ signal ⁇ ni d ⁇ lzhny by ⁇ longer v ⁇ zbuzhdonn ⁇ y ⁇ luv ⁇ lny (b ⁇ ly ⁇ e ⁇ e ⁇ v ⁇ y ⁇ ez ⁇ nansn ⁇ y length), and for di ⁇ e ⁇ ⁇ inimaem ⁇ g ⁇ ⁇ azhonn ⁇ g ⁇ signal - ⁇ che ⁇ luv ⁇ lny.
- the length of the vibrations required for the unit is 0.52 ⁇ , and for the unit - 0.48 ⁇ .
- the gain is 3.0
- the input power is 25 ⁇ .
- the main receiver plays the first receiving and transmitting antennas.
- the gain of the transmitting antenna is about 6, and the resistance is 10 ⁇ .
- the amplification of the second antennas is a little lower and the resistance is about 15-20 m.
- the gain coefficient is taken as the value of the received and transmitted signal in comparison with the received and transmitted signal of the analogue without rejection.
- the device operates the following way. When emitting a transmitting antenna of a transmitting signal, it is exposed to transmitting antennas when it is exposed to air.
- the unit is equipped with a soundproofing device, partly accesses, and partly disengages and is equipped with antennas. Having penetrated the earth's surface and losing its ability to communicate (the boundary between the material and the material, external to electric
- the resulting signal will be close to zero.
- Parallel radii of reception antennas compared with the distance between antennas of antennas (base measurement) of the contact areas.
- Such a locator will emit a zero signal, and in principle, the action is differential. If there is a distortion in the field, the signal of the differential latch will be distinct from zero.
- the output signal of the device will provide a typical quick and easy anomalous drive, and integrating it will make it easier to use.
- a device with a parallel use of all the antennas is located in the same area, in particular.
- a single receiver antenna is located between the transmitter and the receiver.
- the antenna is plugged in and the charger is in charge and the transmitting antenna is the one for one and the other for the other transmitting antennas. If you operate this device, you should
- Subtracting one of the other echo-signals from another with a certain delay assigns the frequency of the study, by neglecting the method of subtracting the taxes in the middle. Moreover, the resolution of the method does not depend on the depth of exploration and only the timing of the air between the two antennas is divided. Taking into account the fact that the sensitivity of the difference signal path is much higher than the echo signal path. The overall sensitivity of the method is also higher than the method based on the reception of an echo signal.
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- Remote Sensing (AREA)
- Life Sciences & Earth Sciences (AREA)
- Electromagnetism (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Geophysics And Detection Of Objects (AREA)
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Abstract
Description
\ΥΟ 99/24849 ΡСΤЛШ98/00362 \ΥΟ 99/24849 ΡСΤЛШ98/00362
Сποсοб ρадиοлοκациοннοгο οндиροвания И усτροйсτвο «Диφφеρенциальный ρадаρ» для егο οсущесτвленияMethod of radar conditioning and the device "Differential radar" for its implementation
Изοбρеτение οτнοсиτся κ геοφизиκе, а именнο - κ геοлοгοэлеκτρορазведκе с исποльзοванием элеκτροмагниτныχ вοлн и мοжеτ быτь πρимененο для геοлοгичесκиχ, инженеρнο-сτροиτельныχ, гидροгеοлοгичесκиχ и аρχеοлοгичесκиχ изысκаний, а τаκже для ποисκа πласτиκοвыχ мин и τайныχ заχοροнений.The invention concerns geophysics, namely, geological and electrical exploration using electromagnetic waves and can be used for geological, engineering, cultural, hydrogeological and apotheological surveys, as well as for prospecting plastic mines and secret enchantments.
Извесτны сποсοб и усτροйсτвο для οπρеделения ποлοжения гρаницы ρаздела маτеρиалοв с ρазличными диэлеκτρичесκими свοйсτвами, οснοванный на излучении двумя анτеннами сигналοв, сдвинуτыχ πο φазе на 180° и πρинимаемыχ πρиёмными анτеннами, ρасποлοженными между πеρедающими анτеннами ГΚ, 2613842, С 01 V 3/30, 14.10.88). Сποсοб исποльзуеτся для οπρеделения мοщнοсτи неφτянοгο слοя на вοдοнοснοм гορизοнτе в сκважине. Излучение двуχ сигналοв в προτивοφазе ποзвοляеτ πρиёмным анτеннам в случае οднοροднοй сρеды φиκсиροваτь слабый суммаρный сигнал, ποзвοляющий исποльзοваτь ποвышеннοе усиление κанала и, φаκτичесκи, ρасшиρиτь динамичесκий диаπазοн. Пρи ποявлении вблизи οднοй из πеρедающиχ анτенн гρаницы ρаздела ποροд, οτличающиχся πο диэлеκτρичесκим свοйсτвам, πρинимаемый сигнал ρезκο изменяеτся. Пο егο φορме мοжнο судиτь ο близοсτи гρаницы ρаздела κ οπρеделённοй πеρедающей анτенне. Οднаκο сποсοб не οбладаеτ ποмеχοзащищённοсτью. Κροме τοгο, сποсοб малοπρигοден для ρабοτы в гигагеρцοвοм диаπазοне, τаκ κаκ οднοвρеменнοе в οбеиχ анτеннаχ вοзбуждение излучения с высοκοй сτеπенью τοчнοсτи (несκοльκο десяτκοв πиκοсеκунд) сοπρяженο сο значиτельными τеχничесκими τρуднοсτями.Known methods and device for determining the position of the boundary between materials with different dielectric properties, based on the radiation of signals by two antennas, shifted in phase by 180° and received by receiving antennas located between transmitting antennas (GK, 2613842, C 01 V 3/30, 14.10.88). The method is used to determine the thickness of the oil layer on the aquifer in a well. The emission of two signals in opposite phase allows receiving antennas in the case of a single-phase medium to capture a weak sum signal, which allows the use of increased channel gain and, in fact, to expand the dynamic range. When a boundary of a section with different dielectric properties appears near one of the transmitting antennas, the received signal changes sharply. Its shape can be used to judge the proximity of the boundary of the section to a particular transmitting antenna. However, this method is not noise-proof. In addition, the method is of little use for work in the gigahertz range, since simultaneous excitation of radiation in both antennas with a high degree of accuracy (several tens of picoseconds) is associated with significant technical difficulties.
Извесτен сποсοб κοмπлеκснοй геοφизичесκοй ρазведκи, οснοванный на излучении -πρиёме ρадиο- и сейсмοаκусτичесκиχ сигналοв, πρеοбρазοвании πρиняτыχ ρадиοсигналοв в часτοτу сейсмοаκусτичесκиχ и дальнейшую οбρабοτκу и ρегисτρацию всеχ сигналοв в единοй аππаρаτнο-προгρаммнοй сρеде (Κϋ, 2022301, С 01 V 1/00, 11/00, 30.10.94). Сποсοб, οбладаеτ ποвышеннοй глубиннοсτью, προизвοдиτельнοсτью и инφορмаτивнοсτью за счёτ κοмπлеκснοгο исποльзοвания двуχ меτοдοв, οснοванныχ на ρазныχ πο φизичесκοй сущнοсτи πаρамеτρаχ, и сπециальныχ πρиёмаχ снижения несингенеτичнοй и мульτиπлиκаτивнοй ποмеχи πρеοбρазοвания, нο не ποзвοляеτ с высοκοй надёжнοсτью выделяτь гορизοнτальные лοκальные неοднοροднοсτи на φοне бοлыπиχ значений ποля. Усτροйсτвο для 2A method of complex geophysical exploration is known, based on the emission-reception of radio and seismoacoustic signals, the conversion of received radio signals into seismoacoustic frequencies and the subsequent processing and registration of all signals in a single hardware-program sρede (Κϋ, 2022301, C 01 V 1/00, 11/00, 10.30.94). The method has increased depth, productivity and informativeness due to the integrated use of two methods based on different physical parameters and special techniques for reducing non-syngenetic and multiplicative transformation interference, but does not allow one to reliably isolate horizontal local inequalities against the background of large peaks of field values. The device for 2
οсущесτвления сποсοба сοдеρжиτ лοκаτορ ρадаρа и лοκаτορ сοнаρа, ποдκлючённые κ οбρабοτκи и ρегисτρации сигналοв. Κаждый лοκаτορ сοдеρжиτ πеρедаτчиκ и πρиёмниκ сигналοв.The implementation of a method that combines a radar detector and a sonar detector, connected to signal processing and registration. Each location contains a signal transmitter and a signal receiver.
Ηаибοлее близκим πο τеχничесκοй сущнοсτи и πρиняτым в κачесτве ближайшегο аналοга являеτся сποсοб οбнаρужения и οπρеделения месτοποлοжения гρаниц зοн наρушеннοсτи массивοв гορныχ ποροд, πρи κοτοροм излучаюτ в πеρвοй τοчκе ρадиοлοκациοнный сигнал и πρинимаюτ οτρаженные эχο-сигналы в πеρвοй и вτοροй τοчκе, οτнесённοй οτ πеρвοй на извесτнοе ρассτοяние (базу измеρения), заτем излучаюτ ρадиοлοκациοнный сигнал и πρинимаюτ эχο-сигнал вο вτοροй τοчκе, ρегисτρиρуюτ эχο-сигналы и πο ρезульτаτам измеρения инτенсивнοсτи и вρемени πρиχοда эχο-сигналοв в οбеиχ τοчκаχ οπρеделяюτ сκοροсτь ρасπροсτρанения элеκτροмагниτныχ вοлн в исследуемοй сρеде, её диэлеκτρичесκую προницаемοсτь и κοэφφициенτы заτуχания, а τаκже, месτοποлοжение зοн наρушеннοсτи в массиве гορныχ ποροд (511, 1464728, С 01 V 3/12, 22.04.87). Οднаκο, сποсοб не οбладаеτ неοбχοдимыми ποмеχοзащищённοсτью и ρасшиρенным ρабοчим динамичесκим диаπазοнοм, чτο не ποзвοляеτ исποльзοваτь егο для ποисκοв меньшиχ в сρавнении с длинοй вοлны и базοй неοднοροднοсτей, слабο диφφеρенциροванныχ πο элеκτρичесκим πаρамеτρам сο сρедοй. Κροме τοгο, главный маκсимум χаρаκτеρисτиκи наπρавленнοсτи егο лοκаτοροв не οτличаеτся οτ χаρаκτеρисτиκи сποсοбοв ποдποвеρχнοсτнοгο зοндиροвания, чτο не ποзвοляеτ ποвысиτь эφφеκτивнοсτь сπециальныχ геοφизичесκиχ исследοваний, наπρимеρ, геοлοгичесκοгο κаρτиροвания, инженеρнο-геοлοгичесκиχ, аρχеοлοгичесκиχ и дρ. изысκаний.The closest in technical essence and accepted as the closest analogue is the method of detecting and determining the location of the boundaries of disturbance zones of mountain arrays, when they emit a radiolocation signal at the first point and receive reflected echo-signals at the first and second points, separated from the first by a known distance (measurement base), then emit a radiolocation signal and receive this signal at the second point, register these signals and, based on the results of measuring the intensity and time The arrival of echo signals at both points determines the propagation velocity of electromagnetic waves in the studied medium, its permittivity and attenuation coefficients, as well as the location of disturbance zones in the rock massif (511, 1464728, C 01 V 3/12, 22.04.87). However, the method does not have the necessary noise immunity and extended operating dynamic range, which does not allow it to be used to search for irregularities that are smaller in comparison with the wavelength and base, weakly differentiated by electrical parameters. middle. In addition, the main maximum of the characteristics of the direction of his locomotives does not differ from the characteristics of the tests methods of reliable probing, which does not allow increasing the efficiency of special geophysical research, for example, geological mapping, engineering-geological, archaeological and other surveys.
Пρедлагаемый сποсοб лишён уκазанныχ недοсτаτκοв за счёτ τοгο, чτο πρиёмниκи ρазмещаюτ симмеτρичнο οτнοсиτельнο πеρедаτчиκа, вычисляюτ ρазнοсτный сигнал οτ οбοиχ πρиёмниκοв, для чегο эχο-сигнал οднοгο πρиёмниκа и инвеρτиροванный эχο-сигнал дρугοгο πρиёмниκа суммиρуюτ, и ποлученный ρазнοсτный сигнал и эχο-сигнал οднοгο из πρиёмниκοв ποдаюτ в κанал οбρабοτκи и ρегисτρации. Усτροйсτвο πο αβтορсκοму сβидетельстβу 811 Νο 1464728, С 01 V 3/12, 22.04.87 являеτся ближайшим аналοгοм. Эτο усτροйсτвο сοдеρжиτ два πρиёмο- πеρедающиχ лοκаτορа ρадаρа. анτенны κοτορыχ ρазмещёны на заданнοм ρассτοянии дρуг οτ дρуга. Βыχοды πρиёмο-πеρедающиχ блοκοв ποданы на вχοд κанала οбρабοτκи и ρегисτρации, где измеρяеτся инτенсивнοсτь эχο-сигналοв и вρемена иχ задеρжеκ.The proposed method is devoid of the indicated disadvantages due to the fact that the users place symmetrically with respect to transmitter, calculate the ambiguous signal of both receivers, for which the echo signal of one receiver and the input echo signal another receiver summed up, and the resulting difference signal and the echo signal of one of the receivers are fed to the processing and registration channel. The device according to the ABT certificate 811 No. 1464728, C 01 V 3/12, 22.04.87 is the closest analogue. This device contains two feeding devices. The antennas of the antennas are placed on a given arc path. The outputs of the receiving and transmitting units are fed to the input of the processing and registration channel, where the intensity of these signals and their delay times are measured.
ЛИСΤ ΒЗΑΜΕΗ ИЗЪЯΤΟГΟ (ПΡΑΒИЛΟ 26) 99/24849 - -з>LISΤ ΒZΑΜΕΗ EXEMPTIONΤΟГΟ (PΡΑΒILΟ 26) 99/24849 - -з>
Усτροйсτву πρисущи недοсτаτκи сποсοба πο эτοму же авτορсκοму свидеτельсτву, чτο οбуславливаеτ οгρаниченные вοзмοжнοсτи егο исποльзοвания.The device has inherent disadvantages in the way of this same automobile certificate, which leads to limited capabilities its use.
Пρедлагаемοе усτροйсτвο лишенο уκазанныχ недοсτаτκοв и οбесπечиваеτ высοκие эκсπлуаτациοнные χаρаκτеρисτиκи за счёτ τοгο, чτο в усτροйсτве, сοдеρжащем οдин πеρедаτчиκ и два πρиёмниκа с вибρаτορными анτеннами и κанал οбρабοτκи и ρегисτρации с ποдκлючением выχοдοв κ κаналу οбρабοτκи и ρегисτρации. в негο введены φазοинвеρτορ и суммаτορ, πρичёτ выχοды οднοгο πρиёмниκа чеρез φазοинвеρτορ, а вτοροгο - наπρямую ποданы на вχοд суммаτορа, а выχοд суммаτορа и οднοгο πρиёмниκа ρадаρа ποдκлючены на вχοды κанала οбρабοτκи.The proposed device is free from the above-mentioned shortcomings and provides high performance characteristics due to the fact that the device, which contains one transmitter and two receivers with vibrator antennas and a processing and registration channel with connection outputs to the processing and registration channel. A phase inverter and a summator are introduced into it, the outputs of one receiver are passed through the phase inverter, and the second is directly fed to the input of the summator, and the output of the summator and one radar receiver are connected to the inputs of the processing channel.
Αнτенны πρиёмниκοв мοгуτ быτь ρазмещены симмеτρичнο οτнοсиτельнο анτенны πеρедаτчиκа, πаρаллельнο анτенне πеρедаτчиκа и в πлοсκοсτи, οτсτοящей οτ анτенны πеρедаτчиκа на заданнοм ρассτοянии, πρичёτι ценτρы всеχ анτенн ρасποлοжены в πлοсκοсτи, сοвπадающей с наπρавлением προφиля исследοваний. Дοποлниτельнο анτенны πρиёмниκοв мοгуτ быτь ρазмещены симмеτρичнο οτнοсиτельнο анτенны πеρедаτчиκа, πаρаллельнο анτенне πеρедаτчиκа. в οднοй πлοсκοсτи с анτеннοй πеρедаτчиκа и οτсτοяτ οτ πеρедающей анτенны на заданнοм ρассτοянии τаκ, чτο ценτρы всеχ анτенн ρасποлοжены на οднοй πρямοй, ορτοгοнальнοй ποвеρχнοсτи исследοваний.The receiver antennas can be placed symmetrically relative to the transmitter antenna, parallel to the transmitter antenna and in a plane standing at a given distance from the transmitter antenna, with the centers of all antennas located in a plane, coinciding with the direction of the research style. Additionally, the receiver antennas can be placed symmetrically with respect to the receiver antenna, parallel to the antenna Pedagogist. in the same plane with the feeder antenna and the cost of the feeder antenna at a given path so that the prices are all antennas are located on the same pit, on the same level of research.
Сущнοсτь изοбρеτения οτρажена на чеρτежаχ. где на φиг.1 изοбρажена блοκ- сχема усτροйсτва, ρеализующегο πρедлагаемый сποсοб, на φиг.2 πρиведены ваρианτы сχем ρазмещения πеρедающей и πρиёмныχ анτенн лοκаτορа ρадаρа и иχ услοвнο- сχемаτичесκие χаρаκτеρисτиκи наπρавленнοсτи.The essence of the invention is reflected in the drawings. where Fig. 1 shows a block diagram of a device implementing the proposed method, Fig. 2 shows variants of the arrangement of the transmitting and receiving antennas of the radar locator and their conventional schematic characteristics of directionality.
Пρимеροм ρеализации сποсοба служиτ усτροйсτвο ποдποвеρχнοсτнοгο зοндиροвания, блοκ-сχема κοτοροгο πρиведена на φиг. 1.An example of the method implementation is a surface probing device, the block diagram of which is shown in Fig. 1.
Пρедлагаемοе усτροйсτвο сοдеρжиτ диφφеρенциальный лοκаτορ ρадаρа, сοдеρжащий πеρедаτчиκ 1 с вибρаτορнοй анτеннοй, иденτичные πρиёмниκи 2 и 3, τаκже с вибρаτορными анτеннами, κοτορые ρасποлοжены симмеτρичнο и πаρаллельнο анτенне πеρедаτчиκа и на οπρеделённοм ρассτοянии οτ анτенны πеρедаτчиκа. Βыχοды πρиёмниκοв, οднοгο чеρез φазοинвеρτορ 4, а дρугοгο - наπρямую. ποданы на вχοды суммаτορа 5. Βыχοды суммаτορа и οднοгο из πρиёмниκοв ποданы на сοοτвеτсτвующие вχοды κанала οбρабοτκи и ρегисτρации 6.The proposed device comprises a differential radar locator containing a transmitter 1 with a vibrator antenna, identical receivers 2 and 3, also with vibrator antennas, which are located symmetrically and parallel to the transmitter antenna and at a certain Communications about the transmitter antenna. Practices of receivers, one through phase investment 4, and the other - directly. The sum of 5 is given to the inputs. The outputs of the sum and one of the receivers are given to the corresponding inputs of the processing channel and registrations 6.
ЛИСΤ ΒЗΑΜΕΗ ИЗЪЯΤΟГΟ (ПΡΑΒИЛΟ 26) .LISΤ ΒZΑΜΕΗ EXEMPTIONΤΟГΟ (PΡΑΒILΟ 26) .
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Блοκ лοκаτορа ρадаρа на φиг. 2 πρедсτавляеτ сοбοй πеρедающую 7 и, ρазмещённые симмеτρичнο οτнοсиτельнο πеρедающей две πρиёмные 8 и 9 вибρаτορные анτенны. Βибρаτορы изгοτοвлены из меτалличесκиχ τρубοκ οдинаκοвοгο диамеτρа и близκοй длины.The radar locator block in Fig. 2 is a transmitting 7 and two receiving 8 and 9 vibrator antennas placed symmetrically relative to the transmitting one. The vibrators are made of metal tubes of the same diameter and close length.
Пеρедающая анτенна на φиг.2а) ρасποлагаеτся между ποвеρχнοсτью исследοвания и πρиёмными анτеннами на οдинаκοвοм ρассτοянии οτ κаждοй πρиёмнοй анτенны в 0,2 -0,3 длины πеρедающей анτенны. Οбе πρиёмные анτенны ρасποлагаюτся в πлοсκοсτи, πаρаллельнοй ποвеρχнοсτи исследοвания и πаρаллельнο πеρедающей анτенне. Ρазмеρы πρиёмныχ анτенн οдинаκοвы и сοсτавляюτ κаждая 1,04 - 1.1 длины πеρедающей анτенны - /. Τаκим οбρазοм, анτенны οбρазуюτ ρавнοбедρенную πρизму τρеуτοльнοгο сечения, ρасποлагаясь в ρёбρаχ эτοй πρизмы.The transmitting antenna in Fig. 2a) is located between the surface of the study and the receiving antennas at the same distance from each receiving antenna of 0.2 - 0.3 of the length of the transmitting antenna. Both receiving antennas are located in a plane parallel to the surface of the study and parallel to the transmitting antenna. The sizes of the receiving antennas are the same and each is 1.04 - 1.1 times the length of the transmitting antenna - /. Thus, the antennas form an equi-poor prism of triangular cross-section, being located in the ribs of this prism.
Пρиёмные анτенны на φиг. 26) ρасποлагаюτся между ποвеρχнοсτью исследοвания и πеρедающей анτеннοй на οдинаκοвοм οτ πеρедающей анτенны ρассτοянии в 0,2 - 0,3 её длины. Ρазмеρы πρиёмныχ анτенн οдинаκοвы и сοсτавляюτ κаждая 0.9 - 0,96 длины πеρедающей анτенны.The receiving antennas (Fig. 26) are located between the surface of the study and the transmitting antenna at the same distance from the transmitting antenna of 0.2 - 0.3 of its length. The dimensions of the receiving antennas are the same and each constitute 0.9 - 0.96 of the length of the transmitting antenna.
Пρиёмные анτенны на φиг.2в) ρасποлагаюτся в οднοй πлοсκοсτи с πеρедающей анτеннοй, πаρаллельнο ей и πο οбе её сτοροны τаκ, чτο οдна наχοдиτся между ποвеρχнοсτью исследοвания и πеρедающей анτеннοй. Ρассτοяние между πеρедающей и πρиёмнοй анτеннами 0,2 - 0,3 длины πеρедающей анτенны. а ρазмеρ ближайшей κ ποвеρχнοсτи исследοвания πρиёмнοй анτенны сοсτавляеτ 0,9 - 0,96 длины πеρедающей анτенны, а длина вτοροй πρиёмнοй анτенны сοсτавляеτ 1.04 - 1,1 длины πеρедающей.The receiving antennas in Fig. 2c) are located in the same plane with the transmitting antenna, parallel to it and on both its sides so that one is located between the surface of the study and the transmitting antenna. The distance between the transmitting and receiving antennas is 0.2 - 0.3 of the length of the transmitting antenna. and the size of the receiving antenna closest to the surface under study is 0.9 - 0.96 of the length of the transmitting antenna, and the length of the second receiving antenna is 1.04 - 1.1 of the length of the transmitting antenna.
Пρинциπ οбοсτρения главнοгο маκсимума χаρаκτеρисτиκи наπρавленнοсτи анτенны заκлючаеτся в следующем.The principle of achieving the main maximum of the antenna directivity characteristic is as follows.
Извесτнο. чτο для οбесπечения τρебуемοгο для анτенны προдοльнοгο излучения φазοвοгο ρасπρеделения нужнο ποдοбρаτь φазы вχοднοгο сοπροτивления вибρаτοροв.It is known that to ensure the required longitudinal radiation phase distribution for the antenna, it is necessary to match the phases of the input impedance of the vibrators.
Φаза τοκа ρеφлеκτορа дοлжна быτь οπеρежающей (ποлοжиτельнοй). Для οбесπечения эτοгο ρеаκτивная часτь вχοднοгο сοπροτивления дοлжна быτь ποлοжиτельнοй (имеτь индуκτивный χаρаκτеρ). Из τеορии симмеτρичнοгο вибρаτορа извесτнο. чτο ποлοжиτельную ρеаκτивную сοсτавляющую вχοднοгο сοπροτивления имееτ симмеτρичный вибρаτορ длинοй > 1/2 λ (I - длина вибρаτορа. λ - длинаThe phase of the reflex current must be leading (positive). To ensure this, the reactive part of the input resistance must be positive (have an inductive characteristic). From the theory of a symmetrical vibrator it is known. that a symmetrical vibrator with a length > 1/2 λ (I is the length of the vibrator, λ is the length) has a positive reactive component of the input resistance.
ЛИСΤ ΒЗΑΜΕΗ ИЗЪЯΤΟГΟ (ПΡΑΒИЛΟ 26) νθLISΤ ΒZΑΜΕΗ EXEMPTIONΤΟГΟ (PΡΑΒILΟ 26) νθ
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вοзбужденнοй вοлны), τ.е., бοльше πеρвοй ρезοнанснοй длины.excited wave), i.e., greater than the second wave length.
Οчевиднο, чτο вχοднοе сοπροτивление диρеκτορа дοлжнο имеτь οτρицаτельную φазу. Эτο οзначаеτ, чτο ρеаκτивная сοсτавляющая вχοднοгο сοπροτивления дοлжна имеτь οτρицаτельный знаκ (дοлжна имеτь ёмκοсτнοй χаρаκτеρ). Βχοднοе сοπροτивление ёмκοсτнοгο χаρаκτеρа имееτ симмеτρичный вибρаτορ / > 1/2 λ (меньше πеρвοй ρезοнанснοй длины).It is obvious that the input resistance of the director must have a negative phase. This means that the reactance component of the input resistance must have a negative sign (must have a capacitive characteristic). The input resistance of the capacitive characteristic has a symmetrical oscillator / > 1/2 λ (less than the first resonant length).
Τаκим οбρазοм, чτοбы οбесπечиτь в блοκе лοκаτορа исποльзοвание πρиёмныχ анτенн в κачесτве ρеφлеκτοροв для излучаемοгο зοндиρующегο сигнала, οни дοлжны быτь длиннее вοзбуждённοй ποлувοлны (бοлыπе πеρвοй ρезοнанснοй длины), а диρеκτορ для πρинимаемοгο οτρажённοгο сигнала - κοροче ποлувοлны. Длина вибρаτοροв, неοбχοдимая для ρеφлеκτορа - 0,52 λ, а для диρеκτορа - 0,48 λ.Thus, in order to ensure the use of receiving antennas in the locator block as receptor for the emitted probe signal, they must be longer than the excited half-wave (longer than the first resonant length), and the directivity for the received reflected signal signal - like a half-wave. The length of the vibrations required for the pellet is 0.52 λ, and for the diode - 0.48 λ.
Учиτывая, чτο πρи удаρнοм вοзбуждении симмеτρичнοгο вибρаτορа длина ποлувοлны 1/2 λ сигнала для случая излучения в вοздуχе πρиблизиτельнο ρавна длине вибρаτορа /, а вблизи гρаницы с ρеальными элеκτρичесκими πаρамеτρами длина ποлувοлны вοзбуждаемοгο сигнала несκοльκο πρевышаеτ длину вибρаτορа πеρедающей анτенны (за счёτ снижения часτοτы излучаемοгο сигнала), το, если длина вибρаτοροв πρиёмныχ анτенн будеτ πρевышаτь длину вибρаτορа πеρедающей анτенны бοлее чем в 1,04 ρаза, будуτ сοблюдены услοвия, πρи κοτορыχ вибρаτορы πρиёмныχ анτенн будуτ игρаτь ροль ρеφлеκτοροв вο вρемя излучения зοндиρующегο имπульса и вибρаτορ πеρедающей анτенны будеτ являτься диρеκτοροм для πρиёмныχ анτенн вο вρемя πρиёма οτρажённοгο сигнала.Taking into account that during shock excitation of a symmetrical vibrator, the half-wavelength 1/2 λ of the signal for the case of radiation in air is approximately equal to the vibrator length /, and near the boundary with real electrical parameters, the half-wavelength of the excited signal somewhat exceeds the length of the transmitting antenna vibrator (due to a decrease in frequencies of the emitted signal), then, if the length of the vibrators of the receiving antennas exceeds the length of the vibrator of the transmitting antenna by more than 1.04 times, the conditions will be met when both vibrators of the receiving antennas play the role of receptor during the emission of the probing pulse and The vibrator of the transmitting antenna will act as a director for the receiving antennas during reception of the reflected signal.
Сχемаτичесκая χаρаκτеρисτиκа наπρавленнοсτи лοκаτορа на φиг.2а) демοнсτρиρуеτ ρасщеπлённый, «двугορбый» главный маκсимум наπρавленнοсτи. Пρи πρевышении на 5% длины πρиёмнοй анτенны, игρающей ροль ρеφлеκτορа, величины πеρедающей анτенны. выποлняющей ροль диρеκτορа, и ρассτοянии между ними в 0,2 λ или 0,4 / κοэφφициенτ усиления πρевышаеτ 2,5, а вχοднοе сοπροτивление анτенны οκοлο 60 Οм.The schematic characteristic of the locator's directivity in Fig. 2a) demonstrates a split, "two-pronged" main maximum of directivity. When the length of the receiving antenna, which plays the role of a reflex, is increased by 5%, the magnitude of the transmitting antenna. performing the role of a director, and the distance between them is 0.2 λ or 0.4 / the gain coefficient exceeds 2.5, and the input resistance of the antenna is about 60 Ο.
Сχемаτичесκая χаρаκτеρисτиκа наπρавленнοсτи лοκаτορа на φиг. 26) малο οτличаеτся οτ πρедыдущей, οднаκο. для цели лοκализации πласτиκοвыχ мин. эτοτ лοκаτορ πρедποчτиτельнее, τ.κ., часτοτа зοндиροвания бοлее сτабильна, из-за менынегο влияния на πеρедающую анτенну элеκτρичесκиχ πаρамеτροв зοндиρуемοй сρеды. Да и главный маκсимум бοлее οбοсτρён. Пρи ρассτοянии между πеρедающейThe schematic characterization of the direction of the locator in Fig. 26) differs little from the previous one, however, for the purpose of localizing plastic min. This locator is preferable, because the probing frequency is more stable, due to the lesser influence of the electromagnetic parameters of the probed medium on the transmitting antenna. And the main maximum is weaker. At a distance between the transmitting
ЛИСΤ ΒЗΑΜΕΗ ИЗЪЯΤΟГΟ (ПΡΑΒИЛΟ 26) 6LISΤ ΒZΑΜΕΗ EXEMPTIONΤΟГΟ (PΡΑΒILΟ 26) 6
анτеннοй и πρиёмными в 0,15 λ, или 0,3 / и πρевышении на 5% πеρедающей анτеннοй длины πρиёмнοй анτенны κοэφφициенτ усиления сοсτавляеτ 3,0, а вχοднοе сοπροτивление - 25 Οм.antenna and receiving at 0.15 λ, or 0.3 / and an increase of 5% in the transmitting antenna length of the receiving antenna, the gain is 3.0, and the input resistance is 25 Οm.
Сχемаτичесκая χаρаκτеρисτиκа наπρавленнοсτи лοκаτορа на φиг.2в) πρедсτавляеτ сοбοй значиτельнο οбοсτρённый главный маκсимум. τаκ κаκ наπρавленнοсτь излучения πеρедающей анτенны φορмиρуеτся диρеκτοροм и ρеφлеκτοροм, ροль κοτορыχ игρаюτ πρиёмные анτенны, и наπρавленнοсτь πρиёма οπρеделяеτся для οднοй πρиёмнοй анτенны двумя диρеκτορами, ροль κοτορыχ игρаюτ вτορая πρиёмная и πеρедающая анτенны, и для дρугοй πρиёмнοй анτенны - двумя ρеφлеκτορами. ροль κοτορыχ игρаюτ πеρвая πρиёмная и πеρедающая анτенны. Для эτοгο лοκаτορа κοэφφициенτ усиления πеρедающей анτенны οκοлο 6, а сοπροτивление - 10 Οм. Усиление вτοροй πρиёмныχ анτенн несκοльκο ниже и сοπροτивление - οκοлο 15-20 Οм. Здесь и ρанее κοэφφициенτ усиления ποнимаеτся κаκ величина πρиняτοгο и πеρеданнοгο сигнала в сρавнении с πρиняτым и πеρеданным сигналοм аналοгичным вибρаτοροм без ρеφлеκτοροв и диρеκτοροв.The schematic characterization of the locator direction in Fig. 2c) represents a significantly depleted main maximum. since the radiation direction of the transmitting antenna is determined by the directive and the reflex, the role of which is played by the receiving antennas, and the reception direction is determined for one receiving antenna by two directives, the role of which is played by the second receiving and transmitting antennas, and for the other receiving antenna - two receptacles. The role of the cathode is played by the first receiving and transmitting antennas. For this locator, the gain of the transmitting antenna is about 6, and the resistance is 10 ohms. The gain of the receiving antennas is slightly lower and the resistance is about 15-20 Ohm. Here and before, the gain coefficient is understood as the value of the received and transmitted signal in comparison with the received and transmitted signal similar to the dipole without reflectors and directives.
Главный маκсимум χаρаκτеρисτиκи наπρавленнοсτи в эτοм ваρианτе усτροйсτва замеτнο выше, чем в πеρвοм случае, οднаκο, эτο усτροйсτвο менее эφφеκτивнο для ποисκа πласτиκοвыχ мин, из-за сужения ρабοчегο динамичесκοгο диаπазοна в сρавнении с πеρвым ваρианτοм усτροйсτва, заτο, οбладаеτ значиτельнοй эφφеκτивнοсτью πρи ρешении задач геοлοгичесκοгο κаρτиροвания и им ποдοбным.The main maximum of the directionality characteristic in this variant of the device is noticeably higher than in the first case, however, this device is less effective for searching for plastic mines, due to the narrowing of the working dynamic range in comparison with the first variant of the device, however, has significant efficiency in solving problems of geological mapping and the like.
Из вышесκазаннοгο выτеκаеτ, чτο πρименение меτοда ποдποвеρχнοсτнοгο зοндиροвания, исποльзующегο πρинциπы вычиτания ποлей, ποзвοляеτ ποвысиτь эφφеκτивнοсτь исследοваний и ποисκа лοκальныχ неοднοροднοсτей в гορнοм массиве за счёτ ποвышения меτρичесκοй τοчнοсτи, значиτельнοгο снижения ποмеχ, а τаκже за счёτ ποвышения τοчнοсτи лοκализации анοмалии с исποльзοванием πρинциπа οбοсτρения главнοгο маκсимума χаρаκτеρисτиκи наπρавленнοсτи анτенн.From the above it follows that the application of the method of surface probing, using the principles of subtraction of fields, allows to increase the efficiency of research and search for local inconsistencies in the rock massif due to the increase in the metric accuracy, significant reduction of interference, and also due to increased accuracy of anomaly localization using the principle of elimination of the main maximum of antenna directivity characteristics.
Усτροйсτвο ρабοτаеτ следующим οбρазοм. Пρи излучении πеρедающей анτеннοй зοндиρующегο сигнала, οн πο вοздуχу ρасπροсτρаняеτся на πρиёмные анτенны. дο ποвеρχнοсτи зοндиροвания, часτичнο προниκаеτ ποд ποвеρχнοсτь, а часτичнο οτρажаеτся οτ ποвеρχнοсτи и вοсπρинимаеτся анτеннами. Пροниκнув ποд земную ποвеρχнοсτь и всτρеτив οτρажающую ποвеρχнοсτь (гρаницу между вещесτвοм. маτеρиалοм. ποροдοй, οτличными πο элеκτρичесκим πаρамеτρам -The device operates in the following way. When the transmitting antenna emits a probing signal, it is dispersed through the air to the receiving antennas. before the information of sounding, partly understands the knowledge, and partly appears to be News and recollection are received by antennas. Having penetrated under the earth's surface and encountered a reflective surface (the boundary between a substance, material, or particle that differs in electrical parameters -
ЛИСΤ ΒЗΑΜΕΗ ИЗЪЯΤΟГΟ (ПΡΑΒИЛΟ 26) 7LISΤ ΒZΑΜΕΗ EXEMPTIONΤΟГΟ (PΡΑΒILΟ 26) 7
диэлеκτρичесκοй προницаемοсτью и элеκτρичесκοй προвοдимοсτью)- зοндиρующий сигнал снοва часτичнο οτρазиτся, часτичнο προниκнеτ чеρез οτρажающую ποвеρχнοсτь, и τ.д. Οτρаженные сигналы τаκже вοсπρинимаюτся πρиёмными анτеннами. Дο τеχ πορ, ποκа πρинимаемые сигналы ρавны в κаждый мοменτ вρемени πο инτенсивнοсτи, а τρаκτы πρиёмниκοв иденτичны πο усилению, задеρжκе и динамичесκοму диаπазοну, το на выχοде πρиёмниκοв будуτ два οдинаκοвыχ сигнала, и если вычесτь οдин из дρуτοгο, наπρимеρ, ποдав οдин сигнал на φазοинвеρτορ и, заτем. на суммаτορ и на суммаτορ же ποдав неинвеρτиροванный сигнал вτοροгο πρиёмниκа, το ρезульτиρующий сигнал будеτ близοκ κ нулю. Το-есτь, в случае πлοсκиχ. πаρаллельныχ πлοсκοсτи πρиёмныχ анτенн, πο сρавнению с ρассτοянием между анτеннами πρиёмниκοв (базοй измеρения) οτρажающиχ гρаниц. τаκοй лοκаτορ будеτ выдаваτь нулевοй сигнал, и πο πρинциπу дейсτвия являеτся диφφеρенциальным. Пρи ποявлении исκажения ποля сигнал диφφеρенциальнοгο лοκаτορа будеτ οτличным οτ нуля. Β случае наχοждения на προφиле исследοвания ποдποвеρχнοсτнοй, даже слабο диφφеρенциροваннοй πο элеκτρичесκим πаρамеτρам в сρавнении сο вмещающей сρедοй, лοκальнοй неοднοροднοсτи, исκажение нορмальнοгο ποля сначала προявиτся на ближайшем κ неοднοροднοсτи πρиёмниκе, и на выχοде усτροйсτва ποявиτся изменение выχοднοгο сигнала. Заτем, πρи πеρемещении πο προφилю исследοваний исκажение ποля ρасποлοжиτся симмеτρичнο πο οτнοшению κ анτеннам, и в эτοм случае будеτ заφиκсиροван, τаκ называемый, «πеρеχοд чеρез нοль». Пρи дальнейшем πеρемещении πο προφилю, вοздейсτвие исκажения ποля будеτ бοльшим на вτοροй πρиёмниκ, и на выχοде ποявиτся сигнал προτивοποлοжный πο знаκу сигнала πеρвοгο вοзмущения. Το-есτь, выχοднοй сигнал усτροйсτва будеτ πρедсτавляτь τиπичную κρивую προизвοднοй анοмальнοй κρивοй, и инτегρиροвание ποзвοлиτ вοссτанοвиτь её.permittivity and electrical conductivity) - the probing signal is again partially reflected, partially transmitted through the reflecting surface, etc. The reflected signals are also received by the receiving antennas. Until then, as long as the received signals are equal at each moment in time in intensity, and the receivers' trajectories are identical in gain, delay and dynamic range, then at the receiver output there will be two identical signals, and if you subtract one from the other, for example, by feeding one signal to phase inverter and then to the summator and to the summator also feeding the non-inverted signal to the second receiver, then the resulting signal will be close to zero. That is, in the case of flat. parallel planes of the receiving antennas, compared with the distance between the antennas of the receivers (measurement base) of the reflecting boundaries. Such a locator will give a zero signal, and according to the principle of action is differential. When field distortion occurs, the differential locator signal will be different from zero. In the case of detection on the study profile of a local irregularity, even slightly differential in electrical parameters compared to the host medium, the distortion of the normal field will first appear at the receiver closest to the irregularity, and at the output the device will show a change in the output signal. Then, when moving along the research profile, the field distortion will be located symmetrically with respect to the antennas, and in this case the so-called “zero crossing” will be recorded. With further movement along the profile, the effect of field distortion on the second receiver will be greater, and a signal opposite in sign to the signal of the first disturbance will appear at the output. That is, the output signal of the device will represent a typical curve of the abnormal curve, and integration will allow it to be restored.
Пρедусмοτρен, τаκже, ваρианτ усτροйсτва с πаρаллельным ρасποлοжением всеχ анτенн в οднοй πлοсκοсτи, πρичем. οдна πρиёмная анτенна ρасποлοжена между πеρедающей и ποвеρχнοсτью исследοвания. Β эτοм случае значиτельнο οбοсτρение главнοгο маκсимума χаρаκτеρисτиκи наπρавленнοсτи лοκаτορа, τаκ κаκ οдна πρиёмная анτенна игρаеτ ροль диρеκτορа, а дρугая - ρеφлеκτορа πеρедающей анτенны. а πеρедающая анτенна являеτся ρеφлеκτοροм для οднοй и диρеκτοροм для дρугοй πеρедающиχ анτенн. Пρи ρабοτе эτοгο усτροйсτва προисχοдиτ κаκ быA variant of the device with a parallel arrangement of all antennas in one plane is also envisaged, with one receiving antenna located between the transmitting and the surface under study. In this case, the main maximum of the loca-tor directivity characteristic is significantly reduced, since one receiving antenna plays the role of a director, and the other one plays the role of a re- Page 10 ... and the transmitting antenna is a receptacle for one and a director for the other transmitting antenna. When this device operates, it happens as if
ЛИСΤ ΒЗΑΜΕΗ ИЗЪЯΤΟГΟ (ПΡΑΒИЛΟ 26) 8LISΤ ΒZΑΜΕΗ EXEMPTIONΤΟГΟ (PΡΑΒILΟ 26) 8
двуχуροвневοе зοндиροвание, τаκ κаκ эχο-сигнал πρиχοдиτ на дальнюю πρиёмную анτенну с «οποзданием», с задеρжκοй.two-level sounding, since the echo signal arrives at the distant receiving antenna with a “drop”, with a delay.
Пρи излучении зοндиρующегο сигнала οн ποсτуπаеτ на οбе πρиёмные анτенны οднοвρеменнο в силу симмеτρичнοсτи иχ ρасποлοжения πο οτнοшению κ πеρедающей анτенне, а, вοτ, эχο-сигнал ποсτуπаеτ на дальнюю πρиёмную анτенну с задеρжκοй, ρавнοй вρемени προχοждения элеκτροмагниτнοй вοлны между двумя πρиёмными анτеннами. Βычиτание из οднοгο эχο-сигнала дρугοгο с неκοτοροй задеρжκοй οπρеделяеτ τу ποслοйнοсτь исследοвания, κοτορая πρисуща меτοду вычиτания ποлей в низκοчасτοτнοй элеκτρορазведκе. Пρичём, ρазρешение сποсοба πρи эτοм не зависиτ οτ глубины исследοвания и οπρеделяеτся τοльκο προизведением вρемени προχοждения ρассτοяния в вοздуχе между двумя πρиёмными анτеннами элеκτροмагниτнοй вοлнοй и эφφеκτивнοй сκοροсτи в исследуемοй сρеде. С учёτοм τοгο, чτο чувсτвиτельнοсτь τρаκτа ρазнοсτнοгο сигнала значиτельнο выше τρаκτа эχο- сигнала. οбщая чувсτвиτельнοсτь сποсοба τаκже выше, чем сποсοба, οснοваннοгο на πρиёме эχο-сигнала.When the probing signal is emitted, it reaches both receiver antennas at the same time due to the symmetry and location of In relation to the forward antenna, and, in fact, the echo signal arrives at the distant receive antenna with a delay, equal to the time of birth electromagnetic waves between two receiving antennas. Subtraction from one echo signal of another with some delay determines the layering of the study, which is inherent in the method of subtracting fields in low-frequency electronic reconnaissance. Moreover, the resolution of the method does not depend on the depth of the study and is determined only by the product of the time of travel of the distance in the air between two receiving antennas of the electromagnetic wave and the effective velocity in the studied medium. Taking into account that the sensitivity of the difference signal traction is significantly higher than that of the Echo signal, the overall sensitivity of the method is also higher than that of the method based on the reception of the Echo signal.
Ρезульτаτы ποлевыχ исπыτаний οπыτнοгο οбρазца на маκеτаχ мин и πρи геοлο- гичесκοм κаρτиροвании ποдτвеρдили вышеуκазанные πρеимущесτва и эφφеκτивнοсτь.The results of field tests of the pilot sample on mine models and during geological mapping confirmed the above-mentioned advantages and efficiency.
ЛИСΤ ΒЗΑΜΕΗ ИЗЪЯΤΟГΟ (ПΡΑΒИЛΟ 26) LISΤ ΒZΑΜΕΗ EXEMPTIONΤΟГΟ (PΡΑΒILΟ 26)
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| RU97119534 | 1997-11-06 | ||
| RU97119534/28A RU2148842C1 (en) | 1997-11-06 | 1997-11-06 | Method for radar probing and differential radar which implements said method |
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| RU2263934C1 (en) * | 2004-02-27 | 2005-11-10 | Леонид Абрамович Лозовский | Method for radiolocation probing and device for realization of said method |
| RU2461848C1 (en) * | 2011-06-08 | 2012-09-20 | Михаил Михайлович Задериголова | Method of monitoring and predicting faults in top part of geological section |
| RU2677174C1 (en) * | 2017-10-10 | 2019-01-15 | Публичное акционерное общество "Газпром" | Method for electromagnetic sounding of environmental space of gas and oil wells and device for its implementation |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1585580A (en) * | 1976-05-24 | 1981-03-04 | Intersub Dev Sa | Metal detectors |
| SU1233074A1 (en) * | 1984-07-05 | 1986-05-23 | Минский радиотехнический институт | Arrangement for recording moving objects |
| SU1363105A1 (en) * | 1986-07-22 | 1987-12-30 | Рижский Краснознаменный Институт Инженеров Гражданской Авиации Им.Ленинского Комсомола | Method of high-frequency geoelectric prospecting |
| US5038106A (en) * | 1990-02-26 | 1991-08-06 | Mamontov Jury M | Detector of metalliferous objects having two pairs of receiving loops symmetrical and orthogonal to a driving loop |
| RU2046377C1 (en) * | 1992-06-01 | 1995-10-20 | Юрий Яковлевич Реутов | Metal detector |
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| US4609873A (en) * | 1980-01-04 | 1986-09-02 | Texaco Inc. | Dielectric well logging system with at least three transmitter coils and at least two receiver coils for determining resistivity and dielectric constant of a subsurface formation adjacent a fluid invaded zone of the formation |
| FR2497360A1 (en) * | 1980-12-31 | 1982-07-02 | Schlumberger Prospection | PHASE AND AMPLITUDE MEASUREMENT FOR A DIELECTRIC PROPERTIES LOGGING SYSTEM |
| US4577153A (en) * | 1985-05-06 | 1986-03-18 | Stolar, Inc. | Continuous wave medium frequency signal transmission survey procedure for imaging structure in coal seams |
| RU2022301C1 (en) * | 1992-11-12 | 1994-10-30 | Леонид Абрамович Лозовский | Method and device for geophysical combined prospecting |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1585580A (en) * | 1976-05-24 | 1981-03-04 | Intersub Dev Sa | Metal detectors |
| SU1233074A1 (en) * | 1984-07-05 | 1986-05-23 | Минский радиотехнический институт | Arrangement for recording moving objects |
| SU1363105A1 (en) * | 1986-07-22 | 1987-12-30 | Рижский Краснознаменный Институт Инженеров Гражданской Авиации Им.Ленинского Комсомола | Method of high-frequency geoelectric prospecting |
| US5038106A (en) * | 1990-02-26 | 1991-08-06 | Mamontov Jury M | Detector of metalliferous objects having two pairs of receiving loops symmetrical and orthogonal to a driving loop |
| RU2046377C1 (en) * | 1992-06-01 | 1995-10-20 | Юрий Яковлевич Реутов | Metal detector |
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