WO2017006415A1 - Radiogoniomètre - Google Patents

Radiogoniomètre Download PDF

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Publication number
WO2017006415A1
WO2017006415A1 PCT/JP2015/069419 JP2015069419W WO2017006415A1 WO 2017006415 A1 WO2017006415 A1 WO 2017006415A1 JP 2015069419 W JP2015069419 W JP 2015069419W WO 2017006415 A1 WO2017006415 A1 WO 2017006415A1
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WIPO (PCT)
Prior art keywords
unit
arrival
signal
band
radio waves
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PCT/JP2015/069419
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English (en)
Japanese (ja)
Inventor
六蔵 原
崇 ▲柳▼
深沢　徹
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三菱電機株式会社
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Priority to JP2017526820A priority Critical patent/JP6266178B2/ja
Priority to PCT/JP2015/069419 priority patent/WO2017006415A1/fr
Publication of WO2017006415A1 publication Critical patent/WO2017006415A1/fr

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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
    • G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/02—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
    • G01S3/14—Systems for determining direction or deviation from predetermined direction
    • G01S3/46—Systems for determining direction or deviation from predetermined direction using antennas spaced apart and measuring phase or time difference between signals therefrom, i.e. path-difference systems
    • G01S3/48—Systems for determining direction or deviation from predetermined direction using antennas spaced apart and measuring phase or time difference between signals therefrom, i.e. path-difference systems the waves arriving at the antennas being continuous or intermittent and the phase difference of signals derived therefrom being measured

Definitions

  • the present invention relates to a technique for estimating the arrival direction of radio waves.
  • Direction Of Arrival In the technology that estimates the direction of arrival of radio waves (DOA: Direction Of Arrival), information on incoming radio waves is collected in a reception space having a certain size with respect to the radio wave source, or spatially from the radio wave source to the reception space. Detection of the direction of arrival (hereinafter also referred to as “direction search”) is performed by physically synthesizing radio waves arriving with a wide spread.
  • Patent Document 1 Japanese Patent Laid-Open No. 2004-247964
  • Patent Document 2 Japanese Patent Laid-Open No. 2005-037354
  • Non-Patent Document 1 discloses a technique for calculating a frequency component of the received signal by performing a fast Fourier transform process on the received signal obtained by the array antenna unit, and detecting an arrival direction of the received signal based on the frequency component.
  • Patent Document 2 and Non-Patent Document 1 disclose DOA estimation technology called MUSIC (Multiple Signal Classification).
  • MUSIC Multiple Signal Classification
  • an object of the present invention is to provide a direction finding device capable of realizing a simplified hardware configuration and a reduced manufacturing cost.
  • the direction finding device has N antenna elements (N is an integer of 2 or more) capable of receiving a radio wave having a phase difference, and corresponds to the outputs of the N antenna elements, respectively.
  • N is an integer of 2 or more
  • An N-channel analog reception signal that is output in parallel; a signal synthesis unit that generates an interference signal by interfering with the N-system analog reception signals by synthesizing the N-system analog reception signals;
  • a band selection unit that has a passband that is variably set and selectively outputs a signal component of the passband of the interference signal; an A / D conversion unit that digitizes the output of the band selection unit;
  • a data storage unit storing a database for defining a correspondence relationship between the frequency characteristics of the radio wave and the arrival direction of the radio wave, a control unit for controlling the band selection unit to change the passband, and the A Calculate the frequency characteristic of the output of D converter, characterized in that the calculated frequency characteristics and a DOA estimating unit for estimating the direction of arrival of received radio
  • the direction finding device has N (N is an integer of 2 or more) antenna elements that can receive incoming radio waves having a phase difference, and outputs N antenna elements respectively.
  • An antenna apparatus that outputs the corresponding N analog received signals in parallel, and a passband that is variably set. By filtering each of the N analog received signals, N is obtained as a signal component of the passband.
  • a band selection unit for outputting the filter signals of the system in parallel, a signal synthesis unit for synthesizing the filter signals of the N systems by interfering with the filter signals of the N systems, and digitizing the output of the signal synthesis unit
  • An A / D conversion unit a data storage unit storing a database for defining a correspondence relationship between a frequency characteristic of a radio wave and an arrival direction of the radio wave, and the band selection
  • the frequency characteristic of the output of the A / D converter and the control unit that changes the passband by controlling the frequency, and the arrival direction of the received radio wave is estimated by comparing the calculated frequency characteristic with the database And an arrival direction estimating unit.
  • a direction finding device includes an antenna device that generates an interference wave by causing interference between incoming radio waves having a phase difference and outputs an analog reception signal corresponding to the interference wave, and is variably set A band selector that selectively outputs a signal component of the passband of the analog reception signal, an A / D converter that digitizes the output of the band selector, and a radio wave
  • a data storage unit storing a database for defining a correspondence relationship between the frequency characteristic and the arrival direction of the radio wave, a control unit for controlling the band selection unit to change the pass band, and the A / D conversion
  • an arrival direction estimation unit that estimates the arrival direction of the received radio wave by calculating the frequency characteristic of the output of the unit and comparing the calculated frequency characteristic with the database.
  • the control unit changes the pass band of the band selection unit.
  • the arrival direction estimation unit calculates the frequency characteristic of the signal component that has passed through the changing passband, and estimates the arrival direction of the received radio wave by comparing the calculated frequency characteristic with a database. Therefore, the arrival direction of the received radio wave can be estimated with a certain accuracy, and the hardware configuration of the direction finding device can be simplified and the manufacturing cost can be reduced as compared with the prior art.
  • FIG. 10 is a flowchart schematically showing a procedure of direction-of-arrival estimation processing according to Embodiment 3.
  • FIG. 1 is a functional block diagram showing a schematic configuration of a direction finding device 1 according to the first embodiment of the present invention.
  • the direction finding device 1 includes an array antenna device 10 having N antenna elements AN 1 , AN 2 ,.
  • N is an integer of 3 or more.
  • These antenna elements AN 1 ,..., AN N are regularly arranged so that incoming radio waves having a phase difference can be received.
  • the antenna element AN 1, ..., AN N are disposed with the spread of certain space.
  • the observation target of the present embodiment includes broadband radio waves generated by a discharge phenomenon, but is not limited to this.
  • the array antenna apparatus 10 the antenna element AN 1, AN 2, ..., receiver RX 1 for generating an analog reception signal of N lines by performing each amplification processing to the output of AN N, RX 2, ..., RX N.
  • the direction finding device 1 includes a signal synthesis unit 21 that synthesizes N analog reception signals output in parallel from the array antenna device 10, a band selection unit 22 that filters the output of the signal synthesis unit 21, and a band selection.
  • a / D conversion unit 23 for digitizing the analog output of the unit 22, an arrival direction estimation unit 24 for estimating the arrival direction of the received radio wave based on the digital output of the A / D conversion unit 23, and a database relating to the frequency characteristics of the radio wave Is stored, and a control unit 26 is provided.
  • the control unit 26 controls the operations of the receivers RX 1 ,..., RX N , the band selection unit 22 and the arrival direction estimation unit 24 of the array antenna apparatus 10.
  • the signal synthesizer 21 synthesizes the N analog received signals input from the array antenna apparatus 10 to cause the N analog received signals to interfere with each other to generate an interference signal.
  • the signal synthesizer 21 can be configured using, for example, a waveguide structure.
  • the band selection unit 22 includes an analog filter having a variably set pass band Bf.
  • the control unit 26 controls the band selecting unit 22 so that the pass band Bf of the band selecting unit 22 is any of a plurality of frequency bands NB 1 ,..., NB M (M is an integer of 2 or more) having different center frequencies. Can be set.
  • the frequency bands NB 1 ,..., NB M may be continuous in the frequency domain or discontinuous.
  • the band selection unit 22 outputs the signal component of the pass band Bf among the interference signals input from the signal synthesis unit 21 as an analog filter signal.
  • the A / D conversion unit 23 converts the analog output of the band selection unit 22 into a digital filter signal, and supplies the digital filter signal to the arrival direction estimation unit 24.
  • the digital filter signal is a complex digital signal having phase information and amplitude information.
  • the data storage unit 25 stores a database that defines the correspondence between the frequency characteristics of radio waves that will arrive at the array antenna apparatus 10 and the arrival directions of the radio waves.
  • This database is created in advance based on a measurement result or a theoretical calculation result in an experimental environment, and is recorded in the data storage unit 25.
  • As the frequency characteristic of the radio wave an amplitude spectrum or a power spectrum can be used.
  • the arrival direction estimation unit 24 calculates the frequency characteristics of the digital filter signal input from the A / D conversion unit 23, and compares the calculated frequency characteristics with a database in the data storage unit 25, thereby The direction of arrival can be estimated. For example, the direction-of-arrival estimation unit 24 performs correlation analysis between the calculated frequency characteristic and a plurality of frequency characteristics in the database, so that among the plurality of frequency characteristics recorded in the database, The frequency characteristic having the highest degree of correlation with the calculated frequency characteristic can be selected. The arrival direction estimation unit 24 estimates that the arrival direction corresponding to the selected frequency characteristic in the database is the arrival direction of the received radio wave, and outputs estimation data indicating the estimation result.
  • the control unit 26 individually controls the gain of amplification processing of the receivers RX 1 ,..., RX N in the array antenna apparatus 10, thereby optimizing the reception gain of the entire array antenna apparatus 10.
  • the control unit 26 can cause the arrival direction estimation unit 24 to estimate the arrival direction again. For example, when any of the numerical values indicating the degree of correlation between the frequency characteristic calculated based on the digital filter signal and the frequency characteristic in the database is lower than the threshold, the accuracy of the estimation result by the arrival direction estimation unit 24 Can be determined to be low.
  • FIG. 2 is a flowchart schematically showing an example of a procedure of DOA (Direction Of Arrival) estimation processing according to the present embodiment.
  • This arrival direction estimation process is mainly executed by the arrival direction estimation unit 24 and the control unit 26.
  • the control unit 26 performs initial setting for the array antenna apparatus 10 (step ST1). Specifically, the gain is initially set for each of the receivers RX 1 ,..., RX N in the array antenna apparatus 10.
  • the band selection unit 22 outputs the signal component of the frequency band NB 1 in the interference signal input from the signal synthesis unit 21 as the analog filter signal FS 1 .
  • the arrival direction estimation unit 24 waits until the digital filter signal FS 1 is input from the A / D conversion unit 23 (NO in step ST3).
  • the arrival direction estimation unit 24 stores the value of the digital filter signal FS 1 in the memory (step ST4).
  • the control unit 26 increments the band number m by 1 (step ST6).
  • the pass band Bf of the band selection unit 22 is set to the second frequency band NB2.
  • the band selection unit 22 outputs the signal component of the frequency band NB 2 in the interference signal input from the signal synthesis unit 21 as the analog filter signal FS 2 .
  • the arrival direction estimation unit 24 stores the value of the digital filter signal FS 2 in the memory (step ST4 ).
  • the arrival direction estimation unit 24 a digital filter signal FS 1, ..., collates with the database the frequency characteristic of the FS M ( Step ST10). Specifically, the arrival direction estimation unit 24, a digital filter signal FS 1, ..., and calculates the respective frequency characteristics of the FS M, and the calculated frequency characteristics, the frequency of the radio wave is defined in the database Of the combinations with characteristics, the combination showing the highest correlation is detected. When the combination is detected, the arrival direction estimation unit 24 estimates that the arrival direction corresponding to the combination is the arrival direction of the received radio wave.
  • the arrival direction estimation unit 24 returns the procedure of the DOA estimation process to step ST2. For example, if the degree of correlation is lower than the threshold for all combinations of the above-described calculated frequency characteristics and the frequency characteristics of the radio wave defined in the database, it can be determined that the DOA estimation has not been successful. .
  • the arrival direction estimation unit 24 outputs estimation data indicating the estimation result (step ST12). Thereby, the DOA estimation process ends.
  • the functions of the arrival direction estimation unit 24 and the control unit 26 described above can be realized by a processor that executes a computer program.
  • the function may be realized by an LSI (Large Scale Integrated circuit) such as an FPGA (Field-Programmable Gate Array) or an ASIC (Application Specific Integrated Circuit).
  • FIG. 3 is a functional block diagram schematically illustrating a configuration example of the signal processing unit 30 that mainly realizes the functions of the arrival direction estimation unit 24 and the control unit 26.
  • 3 includes a processor 31 including a CPU 31C, a signal input interface 32, an A / D converter (ADC) 33, a RAM (Random Access Memory) 34, a ROM (Read Only Memory) 35, an HDD (Hard Disk). And a large-capacity recording medium 36 such as a drive and a flash memory, and an input / output interface 38.
  • ADC A/ D converter
  • RAM Random Access Memory
  • ROM Read Only Memory
  • HDD Hard Disk
  • the processor 31 loads the computer program recorded in either the ROM 35 or the large-capacity recording medium 36, and operates according to this computer program, so that the functions of the arrival direction estimation unit 24 and the control unit 26 are performed.
  • the RAM 34 is used as a working storage area for the processor 31.
  • the RAM 34 is used as a storage area for temporarily storing the values of the digital filter signals FS 1 ,..., FS M.
  • the ADC 33 can function as the A / D converter 23. That is, the ADC 33 converts the analog filter signal input from the band selection unit 22 into a digital filter signal, and supplies the digital filter signal to the processor 31 via the signal input interface 32 and the bus 37. it can.
  • the ROM 35 or the large-capacity recording medium 36 can function as the data storage unit 25.
  • the input / output interface 38 can function as an interface to the array antenna device 10 and the band selection unit 22 described above.
  • the control unit 26 changes the passband Bf of the band selection unit 22.
  • the arrival direction estimation unit 24 calculates the frequency characteristic of the signal component that has passed through the changing pass band Bf, and compares the calculated frequency characteristic with the database in the data storage unit 25 to determine the arrival direction of the received radio wave. Estimated. Therefore, it is possible to estimate the arrival direction of the received radio waves in a relatively wide band with a certain accuracy. For example, when a wide-band radio wave generated by a frequent discharge phenomenon intermittently arrives at the direction finding device 1, since the radio wave having the same generation factor intermittently arrives, it resembles the frequency characteristics of the radio wave even at different observation times. Sex is considered to exist.
  • the direction finding device 1 of the present embodiment can detect the arrival direction of a broadband radio wave generated by this type of discharge phenomenon.
  • the present embodiment can realize a simplified hardware configuration of the direction finding device and, in turn, a reduction in manufacturing cost as compared with the prior art.
  • the performance of an A / D converter is required to be higher as the frequency of the input signal to the A / D converter is higher.
  • the hardware scale of this type of A / D converter is required. Is big.
  • the A / D converter 23 of the present embodiment is provided at a stage subsequent to the signal synthesizer 21 and the band selector 22, so it is sufficient to digitize one system of analog signals. . Therefore, the direction finding device 1 does not need to have a large-scale circuit configuration for digitizing the outputs of the N systems of the receivers RX 1 ,..., RX N , and thus simplifies the hardware configuration of the direction finding device 1. be able to.
  • FIG. 4 is a functional block diagram showing a schematic configuration of the direction finding device 1M according to the second embodiment.
  • the direction finding device 1M includes an array antenna device 10 having the same configuration as the array antenna device 10 of the first embodiment.
  • the direction finding device 1M includes a band selection unit 40 that filters N analog received signals output in parallel from the array antenna device 10 and outputs N analog filter signals in parallel, and these N systems.
  • a signal synthesizer 42 that synthesizes the analog filter signal
  • an A / D converter 23 that digitizes the analog output of the signal synthesizer 42, and the arrival direction of the received radio wave based on the digital output of the A / D converter 23
  • the direction-of-arrival estimation unit 24 that estimates the frequency
  • a data storage unit 25 that stores a database relating to frequency characteristics of radio waves
  • a control unit 26M that controls the frequency from the array antenna device 10 and outputs N analog filter signals in parallel, and these N systems.
  • the configuration of the A / D conversion unit 23, the arrival direction estimation unit 24, and the data storage unit 25 of the present embodiment is the same as that of the A / D conversion unit 23, the arrival direction estimation unit 24, and the data storage unit 25 illustrated in FIG. The detailed description is omitted.
  • the control unit 26M has a function of controlling the operations of the receivers RX 1 ,..., RX N and the arrival direction estimation unit 24 of the array antenna apparatus 10 in the same manner as the control unit 26 of the first embodiment.
  • the control unit 26M of the present embodiment has a function of controlling the pass band of the band selecting unit 40.
  • the band selection unit 40 includes N analog filters 41 1 , 41 2 ,..., 41 N having a common pass band Bf that is variably set. These analog filters 41 1, 41 2, ..., 41 N are each receiver RX 1, RX 2, ..., to filter the output of the RX N. Control unit 26M, these analog filters 41 1, ..., 41 N and are individually controlled, the analog filter 41 1, ..., a passband Bf of 41 N, a plurality of frequency bands NB 1 having different center frequencies, ..., It can be set to any one of NB M (M is an integer of 2 or more).
  • the frequency bands NB 1 ,..., NB M may be continuous in the frequency domain or discontinuous.
  • the signal synthesizer 42 synthesizes the N analog filter signals input from the band selector 40 to cause the N analog filter signals to interfere with each other to generate and output an interference signal.
  • the signal synthesis unit 42 can be configured using, for example, a waveguide structure.
  • the A / D converter 23 converts the analog output of the signal synthesizer 42 into a digital filter signal, and supplies this digital filter signal to the arrival direction estimation unit 24.
  • the digital filter signal is a complex digital signal having phase information and amplitude information.
  • the arrival direction estimation unit 24 and the control unit 26M can execute the DOA estimation process according to the procedure shown in FIG.
  • the functions of the arrival direction estimation unit 24 and the control unit 26M can be realized by the signal processing unit 30 shown in FIG.
  • the control unit 26M changes the pass band Bf of the band selecting unit 40.
  • the arrival direction estimation unit 24 calculates the frequency characteristic of the signal component that has passed through the changing pass band Bf, and compares the calculated frequency characteristic with the database in the data storage unit 25 to determine the arrival direction of the received radio wave. Estimated. Therefore, as in the case of the first embodiment, it is possible to estimate the direction of arrival of received radio waves in a relatively wide band with a certain accuracy, and thus the hardware configuration of the direction finding device is simplified compared with the conventional technique, and consequently Reduction of manufacturing cost can be realized.
  • FIG. 5 is a functional block diagram showing a schematic configuration of the direction finding device 2 according to the third embodiment.
  • the direction finding device 2 includes an antenna device 11 that receives an incoming radio wave having a phase difference.
  • the antenna device 11 includes a radio wave interference unit 11c that generates an interference wave by causing the incoming radio waves to interfere with each other with the structure of the antenna device 11 itself.
  • the antenna device 11 outputs an interference signal that is an analog reception signal corresponding to the interference wave.
  • an aperture antenna such as a known parabolic antenna can be used.
  • a parabolic antenna includes a reflector having a rotating paraboloid and a receiving unit arranged at the focal point of the rotating paraboloid. When a plane wave enters the reflector as an incoming radio wave, the incoming radio wave reflected by the rotating paraboloid of the reflector is collected at the receiver and interferes.
  • the direction finding device 2 includes a band selection unit 22, an A / D conversion unit 23, an arrival direction estimation unit 24, and a data storage unit 25.
  • the configuration of the A / D conversion unit 23, the arrival direction estimation unit 24, and the data storage unit 25 of the present embodiment is the same as that of the A / D conversion unit 23, the arrival direction estimation unit 24, and the data storage unit 25 illustrated in FIG. The detailed description is omitted.
  • the control unit 26K has a function of controlling the operations of the band selection unit 22 and the arrival direction estimation unit 24, similarly to the control unit 26 of the first embodiment.
  • FIG. 6 is a flowchart schematically showing an example of the procedure of DOA estimation processing according to the present embodiment.
  • This arrival direction estimation process is mainly executed by the arrival direction estimation unit 24 and the control unit 26K.
  • the band selection unit 22 outputs the signal component of the frequency band NB 1 among the interference signals input from the antenna device 11 as the analog filter signal FS 1 .
  • Arrival direction estimating unit 24 stands by the A / D converter 23 to digital filter signal FS 1 is input (NO in step ST23).
  • digital filter signal FS 1 to the arrival direction estimation unit 24 is input (YES in step ST23)
  • the arrival direction estimation unit 24 stores the value of the digital filter signal FS 1 in the memory (step ST24).
  • the control unit 26K increments the band number m by 1 (step ST26).
  • the pass band Bf of the band selection unit 22 is set to the second frequency band NB2.
  • the band selection unit 22 outputs the signal component of the frequency band NB 2 in the interference signal input from the antenna device 11 as the analog filter signal FS 2 .
  • the arrival direction estimation unit 24 stores the value of the digital filter signal FS 2 in the memory (step ST24 ).
  • the arrival direction estimation unit 24 performs digital filter signal FS 1, ..., collates with the database the frequency characteristic of the FS M (step ST30).
  • the arrival direction estimation unit 24 returns the procedure of the DOA estimation process to step ST22.
  • the arrival direction estimation unit 24 outputs estimation data indicating the estimation result (step ST32). Thereby, the DOA estimation process ends.
  • the control unit 26K changes the pass band Bf of the band selecting unit 22.
  • the arrival direction estimation unit 24 calculates the frequency characteristic of the signal component that has passed through the changing pass band Bf, and compares the calculated frequency characteristic with the database in the data storage unit 25 to determine the arrival direction of the received radio wave. Estimated. Therefore, as in the case of the first embodiment, it is possible to estimate the direction of arrival of received radio waves in a relatively wide band with a certain accuracy, and thus the hardware configuration of the direction finding device is simplified compared with the conventional technique, and consequently Reduction of manufacturing cost can be realized.
  • the array antenna apparatus 10 includes three or more antenna elements AN 1, AN 2, ..., have the AN N, but is not limited thereto.
  • the number of antenna elements may be two.
  • the antenna element AN 1 From the viewpoint of improving the arrival direction estimation accuracy of the received radio wave, the antenna element AN 1, ..., it is desirable that the geometrically asymmetrical arrangement the arrangement of AN N.
  • the probe device according to the present invention is suitable for use in a radio wave receiver, and in particular, suitable for use in a radio wave receiver for specifying a discharge generation source for radio waves generated by a discharge phenomenon. Yes.
  • AN 1 to AN N antenna elements RX 1 to RX N receivers, 1,1M, 2 direction finding devices, 10 array antenna devices, 11 antenna devices, 11c radio wave interference units, 21 signal synthesis units, 22 band selection units, 23 A / D conversion unit, 24 arrival direction estimation unit, 25 data storage unit, 26, 26M, 26K control unit, 30 signal processing unit, 31 processor, 31C CPU, 32 signal input interface, 33 A / D converter (ADC) 34 RAM, 35 ROM, 36 Large capacity recording medium, 37 bus, 38 I / O interface, 40 band selection unit, 41 1 to 41 N analog filter, 42 signal synthesis unit.
  • ADC ADC

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  • Engineering & Computer Science (AREA)
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  • Radar Systems Or Details Thereof (AREA)
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Abstract

L'invention concerne un radiogoniomètre (1) comprenant : un dispositif d'antenne (10) pour délivrer en sortie des signaux d'entrée analogiques de système N des en parallèle ; une unité de synthèse de signal (21) pour synthétiser les signaux d'entrée analogiques de système N pour amener ainsi les signaux à interagir mutuellement ; une unité de sélection de bande (22) pour délivrer en sortie sélectivement des composantes de signal dans une bande passante parmi les sorties de l'unité de synthèse de signal (21) ; une unité de conversion A/N (23) servant à numériser la sortie de l'unité de sélection de bande (22) ; une unité de stockage de données (25) pour sauvegarder une base de données dans laquelle une correspondance entre les caractéristiques de fréquence d'une onde radio et la direction d'arrivée des ondes radio est établie ; une unité de commande (26) pour commander l'unité de sélection de bande (22) pour changer la bande passante ; et une unité d'estimation de direction d'arrivée (24). L'unité d'estimation de direction d'arrivée (24) calcule les caractéristiques de fréquence de la sortie de l'unité de conversion A/N (23) et vérifie les caractéristiques de fréquence calculées avec la base de données, ce qui permet d'estimer la direction d'arrivée d'ondes radio reçues.
PCT/JP2015/069419 2015-07-06 2015-07-06 Radiogoniomètre WO2017006415A1 (fr)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019158498A (ja) * 2018-03-12 2019-09-19 株式会社東芝 無線受信機、無線受信方法及び無線システム
WO2020125729A1 (fr) 2018-12-20 2020-06-25 Janssen Pharmaceutica Nv Dérivés d'hétéroaryldihydropyrimidine et procédés de traitement d'infections par le virus de l'hépatite b
JP2021143837A (ja) * 2020-03-10 2021-09-24 株式会社東芝 電波発射源可視化装置および帯域拡大方法
WO2024195076A1 (fr) * 2023-03-23 2024-09-26 三菱電機株式会社 Dispositif de détection d'azimut, programme et procédé de détection d'azimut

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02268282A (ja) * 1989-04-10 1990-11-01 Tech Res & Dev Inst Of Japan Def Agency 広周波数帯域方位弁別方式音響ホーミング装置
JP2004247964A (ja) * 2003-02-13 2004-09-02 Mitsubishi Electric Corp 周波数ホッピング波受信装置及び周波数ホッピング波受信方法
JP2005037354A (ja) * 2003-07-01 2005-02-10 Mitsubishi Electric Corp レーダ装置
JP2005181018A (ja) * 2003-12-17 2005-07-07 Mitsubishi Electric Corp レーダ装置及びレーダ信号解析方法
JP2009047535A (ja) * 2007-08-20 2009-03-05 Mitsubishi Electric Corp 測角装置
JP2011226856A (ja) * 2010-04-16 2011-11-10 Mitsubishi Electric Corp 測定装置
JP2011228870A (ja) * 2010-04-19 2011-11-10 Panasonic Corp 無線通信装置及びチャネル推定方法
JP2013170843A (ja) * 2012-02-17 2013-09-02 Mitsubishi Electric Corp 干渉信号抑圧装置および干渉信号抑圧方法
JP2014157110A (ja) * 2013-02-18 2014-08-28 Mitsubishi Electric Corp 信号処理装置、レーダ装置および信号処理方法
JP2014236322A (ja) * 2013-05-31 2014-12-15 三菱電機株式会社 干渉波抑圧装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6992624B2 (en) * 2004-06-22 2006-01-31 Novatel Inc. Attitude determination system using null-steered array

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02268282A (ja) * 1989-04-10 1990-11-01 Tech Res & Dev Inst Of Japan Def Agency 広周波数帯域方位弁別方式音響ホーミング装置
JP2004247964A (ja) * 2003-02-13 2004-09-02 Mitsubishi Electric Corp 周波数ホッピング波受信装置及び周波数ホッピング波受信方法
JP2005037354A (ja) * 2003-07-01 2005-02-10 Mitsubishi Electric Corp レーダ装置
JP2005181018A (ja) * 2003-12-17 2005-07-07 Mitsubishi Electric Corp レーダ装置及びレーダ信号解析方法
JP2009047535A (ja) * 2007-08-20 2009-03-05 Mitsubishi Electric Corp 測角装置
JP2011226856A (ja) * 2010-04-16 2011-11-10 Mitsubishi Electric Corp 測定装置
JP2011228870A (ja) * 2010-04-19 2011-11-10 Panasonic Corp 無線通信装置及びチャネル推定方法
JP2013170843A (ja) * 2012-02-17 2013-09-02 Mitsubishi Electric Corp 干渉信号抑圧装置および干渉信号抑圧方法
JP2014157110A (ja) * 2013-02-18 2014-08-28 Mitsubishi Electric Corp 信号処理装置、レーダ装置および信号処理方法
JP2014236322A (ja) * 2013-05-31 2014-12-15 三菱電機株式会社 干渉波抑圧装置

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