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RU2018109034A - METHOD OF REMOTE MONITORING OF RADIO-SILENT OBJECTS - Google Patents

METHOD OF REMOTE MONITORING OF RADIO-SILENT OBJECTS Download PDF

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RU2018109034A
RU2018109034A RU2018109034A RU2018109034A RU2018109034A RU 2018109034 A RU2018109034 A RU 2018109034A RU 2018109034 A RU2018109034 A RU 2018109034A RU 2018109034 A RU2018109034 A RU 2018109034A RU 2018109034 A RU2018109034 A RU 2018109034A
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signal
signals
matrix
radio
scattered
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RU2018109034A
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RU2018109034A3 (en
RU2723432C2 (en
Inventor
Валерий Николаевич Шевченко
Игорь Владимирович Донец
Яков Аронович Рейзенкинд
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Акционерное общество "Всероссийский научно-исследовательский институт "Градиент" (АО "ВНИИ "Градиент")
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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
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • 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
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/06—Systems determining position data of a target
    • G01S13/08—Systems for measuring distance only
    • 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
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/06—Systems determining position data of a target
    • G01S13/46—Indirect determination of position data
    • 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
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/06—Systems determining position data of a target
    • G01S13/46—Indirect determination of position data
    • G01S13/48—Indirect determination of position data using multiple beams at emission or reception
    • 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
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/50—Systems of measurement based on relative movement of target
    • G01S13/52—Discriminating between fixed and moving objects or between objects moving at different speeds
    • G01S13/522—Discriminating between fixed and moving objects or between objects moving at different speeds using transmissions of interrupted pulse modulated waves
    • G01S13/524—Discriminating between fixed and moving objects or between objects moving at different speeds using transmissions of interrupted pulse modulated waves based upon the phase or frequency shift resulting from movement of objects, with reference to the transmitted signals, e.g. coherent MTi
    • G01S13/5242—Discriminating between fixed and moving objects or between objects moving at different speeds using transmissions of interrupted pulse modulated waves based upon the phase or frequency shift resulting from movement of objects, with reference to the transmitted signals, e.g. coherent MTi with means for platform motion or scan motion compensation, e.g. airborne MTI
    • 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
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/50—Systems of measurement based on relative movement of target
    • G01S13/52—Discriminating between fixed and moving objects or between objects moving at different speeds
    • G01S13/522—Discriminating between fixed and moving objects or between objects moving at different speeds using transmissions of interrupted pulse modulated waves
    • G01S13/524—Discriminating between fixed and moving objects or between objects moving at different speeds using transmissions of interrupted pulse modulated waves based upon the phase or frequency shift resulting from movement of objects, with reference to the transmitted signals, e.g. coherent MTi
    • G01S13/53—Discriminating between fixed and moving objects or between objects moving at different speeds using transmissions of interrupted pulse modulated waves based upon the phase or frequency shift resulting from movement of objects, with reference to the transmitted signals, e.g. coherent MTi performing filtering on a single spectral line and associated with one or more range gates with a phase detector or a frequency mixer to extract the Doppler information, e.g. pulse Doppler radar
    • G01S13/532—Discriminating between fixed and moving objects or between objects moving at different speeds using transmissions of interrupted pulse modulated waves based upon the phase or frequency shift resulting from movement of objects, with reference to the transmitted signals, e.g. coherent MTi performing filtering on a single spectral line and associated with one or more range gates with a phase detector or a frequency mixer to extract the Doppler information, e.g. pulse Doppler radar using a bank of range gates or a memory matrix
    • 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
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G01S5/04—Position of source determined by a plurality of spaced direction-finders
    • 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
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G01S5/14—Determining absolute distances from a plurality of spaced points of known location
    • 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
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/021—Auxiliary means for detecting or identifying radar signals or the like, e.g. radar jamming signals
    • 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
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/28—Details of pulse systems
    • G01S7/282—Transmitters

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Radar Systems Or Details Thereof (AREA)

Claims (1)

Способ дистанционного мониторинга радиомолчащих объектов, заключающийся в том, что выбирают передатчик, излучающий радиосигнал с расширенным спектром, синхронно принимают решеткой из N антенн многолучевые радиосигналы, включающие прямой радиосигнал передатчика и рассеянные объектами радиосигналы этого передатчика, синхронно преобразуют принятые антеннами радиосигналы в цифровые сигналы sn, где n - номер антенны, которые запоминают и объединяют в цифровой матричный сигнал S={s1, …, sn, …, sN}T, из которого формируют цифровой прямой сигнал s', отличающийся тем, что преобразуют прямой сигнал s' в частичные матричные сигналы комплексной фазирующей функции Aων, каждый из которых включает гипотетические сигналы, рассеиваемые потенциальными подвижными и стационарными объектами в ожидаемой области угловых направлений на каждой ожидаемой частоте доплеровского сдвига ω в ν - й части ожидаемой области задержек, частичные матричные сигналы Aων запоминают и объединяют в полный матричный сигнал комплексной фазирующей функции А0 для нулевого значения доплеровского сдвига частоты, объединяют запомненные цифровые сигналы антенн sn в векторный сигнал
Figure 00000001
, векторный сигнал s запоминают и преобразуют в сигнал элемента комплексного пространственно-частотно-временного изображения для нулевого значения ω=0 доплеровского сдвига частоты
Figure 00000002
, где
Figure 00000003
- матрица, эрмитово сопряженная с А0, с использованием сигнала
Figure 00000004
в качестве начального приближения итерационно формируют и запоминают зависящий от предыдущего решения вспомогательный матричный сигнал
Figure 00000005
, где
Figure 00000006
- z-я компонента вектора элемента изображения
Figure 00000007
, k=1, 2, … - номер итерации, а также сигнал очередного приближения элемента комплексного пространственно-частотно-временного изображения
Figure 00000008
, где λ - множитель Лагранжа, и очищенный от прямого и рассеянных стационарными объектами сигналов векторный сигнал
Figure 00000009
до тех пор, пока номер текущей итерации не превысит заданный порог K, после этого из очищенного векторного сигнала
Figure 00000010
для каждого ожидаемого ненулевого значения доплеровского сдвига частоты ω в каждой ν - й части ожидаемой области задержек формируют сигнал начального приближения
Figure 00000011
, а затем итерационно получают и запоминают вспомогательный матричный сигнал
Figure 00000012
и сигнал очередного приближения
Figure 00000013
элемента комплексного пространственно-частотно-временного изображения до тех пор, пока номер текущей итерации не превысит заданный порог K, объединяют сформированные сигналы элементов изображения
Figure 00000014
в матричный сигнал результирующего комплексного пространственно-частотно-временного изображения Н, после чего по локальным максимумам квадрата модуля матричного сигнала результирующего изображения
Figure 00000015
, где
Figure 00000016
-
Figure 00000017
компонента матричного сигнала Н, определяют число рассеянных радиосигналов, по параметрам которых - значениям доплеровского сдвига частоты ω, временной задержки q и азимутально-угломестного направления приема
Figure 00000018
каждого рассеянного радиосигнала выполняют обнаружение, пространственную локализацию и сопровождение объектов.A method for remote monitoring of radio-silent objects, which consists in selecting a transmitter emitting a spread spectrum radio signal, synchronously receiving a multipath radio signal from an array of N antennas, including a direct radio signal of the transmitter and scattered objects from this transmitter, synchronously converting the received radio signals into digital signals s n n where n - the number of the antenna, which are stored and combined in the digital signal matrix S = {s 1, ..., s n, ..., s N} T, which is formed from the digital line Sig l s ', characterized in that the transformed line signal s' in partial matrix signals of complex phasing function A ων, each of which includes a hypothetical signals scattered potential mobile and stationary objects in the anticipated range of angular directions at each of the expected frequency of the Doppler shift ω in ν - part of the expected delay region, the partial matrix signals A ων are stored and combined into a full matrix signal of the complex phasing function A 0 for the zero value of the Doppler frequency shift, combine the stored digital antenna signals s n into a vector signal
Figure 00000001
, the vector signal s is stored and converted into a signal of an element of a complex spatial-frequency-time-image for a zero value of ω = 0 Doppler frequency shift
Figure 00000002
where
Figure 00000003
- a Hermitian conjugate matrix with A 0 using a signal
Figure 00000004
as an initial approximation, an auxiliary matrix signal depending on the previous solution is iteratively generated and stored
Figure 00000005
where
Figure 00000006
- z-th component of the image element vector
Figure 00000007
, k = 1, 2, ... is the iteration number, as well as the signal of the next approximation of the element of the complex spatial-frequency-temporal image
Figure 00000008
, where λ is the Lagrange multiplier, and the vector signal purified from the direct and scattered by stationary objects signals
Figure 00000009
until the current iteration number exceeds the specified threshold K, then from the cleared vector signal
Figure 00000010
for each expected non-zero value of the Doppler frequency shift ω in each νth part of the expected delay region, an initial approximation signal is generated
Figure 00000011
, and then iteratively receive and store the auxiliary matrix signal
Figure 00000012
and the signal of the next approach
Figure 00000013
element of a complex spatio-frequency-temporal image until the current iteration number exceeds a predetermined threshold K, the generated image element signals are combined
Figure 00000014
into the matrix signal of the resulting complex spatio-frequency-temporal image H, after which the local maxima of the square of the module module of the matrix signal of the resulting image
Figure 00000015
where
Figure 00000016
-
Figure 00000017
component of the matrix signal H, determine the number of scattered radio signals, the parameters of which are the values of the Doppler frequency shift ω, time delay q and azimuth-elevation direction of reception
Figure 00000018
each scattered radio signal performs the detection, spatial localization and tracking of objects.
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RU2724923C2 (en) * 2018-08-10 2020-06-26 Российская Федерация, от имени которой выступает Министерство промышленности и торговли Российской Федерации (Минпромторг) Method for secretive monitoring of radio silent objects

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RU2758585C1 (en) * 2020-09-09 2021-11-01 Акционерное общество "Всероссийский научно-исследовательский институт "Градиент" Method for spatial localisation of radio-silent objects

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JP5750214B2 (en) * 2009-03-30 2015-07-15 日本信号株式会社 Wireless distance / speed measuring device
JP5752481B2 (en) * 2011-05-06 2015-07-22 株式会社東芝 Passive radar device, guidance device, and radio wave detection method
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2724923C2 (en) * 2018-08-10 2020-06-26 Российская Федерация, от имени которой выступает Министерство промышленности и торговли Российской Федерации (Минпромторг) Method for secretive monitoring of radio silent objects

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