WO2018173350A1 - Dispositif radar et procédé pour éviter des interférences radio - Google Patents

Dispositif radar et procédé pour éviter des interférences radio Download PDF

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Publication number
WO2018173350A1
WO2018173350A1 PCT/JP2017/039134 JP2017039134W WO2018173350A1 WO 2018173350 A1 WO2018173350 A1 WO 2018173350A1 JP 2017039134 W JP2017039134 W JP 2017039134W WO 2018173350 A1 WO2018173350 A1 WO 2018173350A1
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WIPO (PCT)
Prior art keywords
radio wave
information
radio
wave interference
radar
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PCT/JP2017/039134
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English (en)
Japanese (ja)
Inventor
将一 和田
浩樹 森
Original Assignee
株式会社 東芝
東芝インフラシステムズ株式会社
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Priority to JP2018540487A priority Critical patent/JP6641024B2/ja
Publication of WO2018173350A1 publication Critical patent/WO2018173350A1/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
    • 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
    • G01S7/023—Interference mitigation, e.g. reducing or avoiding non-intentional interference with other HF-transmitters, base station transmitters for mobile communication or other radar systems, e.g. using electro-magnetic interference [EMI] reduction techniques
    • G01S7/0232—Avoidance by frequency multiplex
    • 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
    • G01S13/95—Radar or analogous systems specially adapted for specific applications for meteorological use
    • G01S13/951—Radar or analogous systems specially adapted for specific applications for meteorological use ground based
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
    • Y02A90/10—Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation

Definitions

  • Embodiments described herein relate generally to a radar apparatus and a method for avoiding radio wave interference.
  • wireless communication devices such as wireless LAN have been promoted to increase the frequency of use for the purpose of large-capacity communication. For this reason, there is a high possibility that radio wave interference will occur between the wireless communication device and a radar device such as a weather radar because the frequency bands used by both devices overlap.
  • the frequency band is also used in a radar apparatus such as a weather radar, so that radio wave interference may occur.
  • a wireless LAN access point is equipped with a radio wave interference avoidance function generally called DFS (Dynamic Frequency Selection).
  • a wireless LAN access point is equipped with a DFS function.
  • This DFS function determines whether or not a predefined pulse pattern of the radar apparatus is included in the signal received by the access point.
  • the pulse pattern is defined by parameters such as a pulse width, a pulse repetition frequency (pulse repetition interval), and the number of pulses.
  • the DFS function avoids interference with the transmission pulse signal of the radar device by changing to a channel of another frequency.
  • the DFS function detects a pulse pattern of the radar apparatus, the DFS function interrupts the use of the channel of the frequency for a predetermined time (for example, 30 minutes). After a certain period of time has elapsed, the channel may be reused and radio wave interference may occur.
  • the DFS function of the wireless LAN access point may not be effective for some reason, and as a result, radio wave interference may occur.
  • the radar apparatus includes a receiving unit and an information processing unit.
  • the receiving means receives a radio signal having a frequency similar to the frequency used by the radar apparatus among the radio signals received via the antenna.
  • the information processing unit creates information related to a function of avoiding radio wave interference, including information for identifying an arbitrary wireless communication device that has transmitted the radio wave signal, based on the radio wave signal received by the receiving unit.
  • FIG. 1 is a block diagram for explaining a configuration of a radar apparatus according to the embodiment.
  • FIG. 2 is a block diagram for explaining the configuration of the data processing apparatus according to the embodiment.
  • FIG. 3 is a diagram illustrating an example of a pulse pattern table according to the embodiment.
  • FIG. 4 is a diagram illustrating an example of a log table according to the embodiment.
  • FIG. 5 is a flowchart for explaining the operation of the attachment unit in the radar apparatus according to the embodiment.
  • FIG. 6 is a flowchart for explaining the processing of the data processing unit according to the embodiment.
  • FIG. 7 is a block diagram for explaining a first modification of the embodiment.
  • FIG. 8 is a block diagram for explaining a second modification of the embodiment.
  • FIG. 1 is a block diagram showing a configuration of a radar apparatus according to this embodiment.
  • the radar apparatus according to the present embodiment includes a radar main body 1 that realizes a standard radar function and an attachment 2 that realizes a radio wave interference avoiding function according to the present embodiment.
  • the attachment part 2 is a detachable facility as an option.
  • the radar main body 1 includes an antenna unit 10, a transmission / reception switching unit 11, a transmitter 12, a receiver 13, a signal processing device 14, and a data processing device 15.
  • the antenna unit 10 is, for example, a parabolic antenna device or an array antenna device composed of a plurality of antenna elements.
  • the transmission / reception switching unit 11 switches transmission / reception of radio signals. That is, the transmission / reception switching unit 11 transfers the transmission pulse from the transmitter 12 to the antenna unit 10 or transfers the radio wave signal received by the antenna unit 10 to the receiver 13.
  • the transmitter 12 generates a transmission pulse (radar signal) corresponding to the pulse pattern output from the signal processing device 14 and outputs the transmission pulse to the antenna unit 10.
  • the signal processing device 14 of the present embodiment is other than the transmission processing of a pulse pattern necessary for normal operation (detection, observation, distance measurement) in radar operation (may be described as an operation pulse pattern for convenience).
  • a transmission process of outputting a pulse pattern related to the radio wave interference avoidance function of the present embodiment to the transmitter 12 is executed.
  • the receiver 13 executes a reception process of the radio signal received by the antenna unit 10 and outputs it to the signal processing device 14.
  • the reception signal received by the antenna unit 10 includes not only an echo signal of the transmitted radar signal but also a radio wave signal transmitted from a wireless communication device such as a wireless LAN, as will be described later.
  • the receiver 13 includes a low noise amplifier 130 and a frequency conversion unit 131.
  • the low noise amplifier 130 amplifies the radio signal received by the antenna unit 10.
  • the frequency conversion unit 131 performs frequency conversion processing of the reception signal output from the low noise amplifier 130 and inputs the reception signal via the distributor 20 as will be described later.
  • the signal processing device 14 executes signal transmission / reception processing necessary for normal operation in radar operation and transmission processing on the radio wave interference avoiding function according to the present embodiment, under the control of the data processing device 15. That is, the signal processing device 14 performs reception processing (digital processing) of received signals necessary for normal operation in radar operation and transmission processing of operation pulse patterns, and pulses on the radio wave interference avoiding function of the present embodiment. A pattern (effective pulse pattern) transmission process is executed.
  • FIG. 2 is a block diagram showing the configuration of the data processing device 15.
  • the data processing device 15 roughly includes a central processing unit (CPU) 150 and a storage unit 151.
  • the central processing unit 150 is a processor that is operated by software, and executes processing related to a function of avoiding radio wave interference, as will be described later.
  • the storage unit 151 includes a memory or the like, and stores a pulse pattern table 152 and a log table 153 as will be described later.
  • the data processing device 15 executes processing related to the radio wave interference avoidance function based on the information indicating the analysis result transmitted from the control / analysis device 22 included in the attachment 2. Specifically, the data processing device 15 performs processing for executing transmission processing of an effective pulse pattern on the function of avoiding radio wave interference.
  • the attachment 2 is connected to the radar main body 1 by an external cable, for example.
  • the attachment unit 2 includes a distributor 20, a wireless communication device 21, and a control / analysis device 22.
  • the distributor 20 distributes the radio wave signal received by the antenna unit 10 and amplified by the low noise amplifier 130 of the receiver 13 to the frequency converter 131 and the wireless communication device 21 of the receiver 13.
  • the radio communication device 21 receives a radio signal of a designated frequency (a set channel band) among radio signals from the distributor 20.
  • the distributor 20 is built in the radar main body 1 and may be configured to output a radio signal received by the antenna unit 10 and amplified by the low noise amplifier 130 to the wireless communication device 21 via, for example, a cable. Good. Further, the control / analysis device 22 may be built in the radar main body 1 and may be configured to input a signal from the wireless communication device 21 via, for example, a cable.
  • the wireless communication device 21 is an existing wireless communication device used as, for example, a wireless LAN access point (AP).
  • the wireless communication device 21 is set such that the channel corresponding to the same frequency (or similar) as the frequency transmitted and received by the radar main body 1 is set among the used channels, and only the reception function is enabled. State.
  • the radio communication device 21 outputs the radio signal received based on the setting among the radio signals output from the distributor 20 to the control / analysis device 22 after predetermined processing.
  • the radio communication device 21 transmits a radio signal having a frequency that causes radio interference with the radar main body 1 among the radio signals received by the antenna unit 10 of the radar main body 1 to the radar main body 1. Received via the receiver 13 and the distributor 20. Further, as will be described later, the wireless communication device 21 receives a radio signal transmitted from an AP of a wireless LAN, for example, as an existing arbitrary radio communication device that is a target of radio wave interference avoidance processing.
  • the control / analysis device 22 is a type of LAN analyzer that uses a computer, monitors transmission signals on a network such as a wireless LAN, and includes hardware and software for performing traffic analysis and failure analysis. .
  • the control / analysis device 22 inputs a radio wave signal output from the wireless communication device 21 and executes various analysis processes such as frequency as will be described later.
  • the control / analysis device 22 monitors the communication status of the radio communication device 21 that has received the radio signal (radio wave signal transmitted from a wireless LAN AP or the like as an arbitrary radio communication device) as the main analysis processing. Then, various information relating to the wireless communication device included in the radio signal is extracted, and the information is transmitted to the data processing device 15. Specifically, the control / analysis device 22 includes, for example, information including identification information of the AP included in a beacon transmitted from a wireless LAN AP (see information in the log table 153 described later). Is analyzed (extracted). Generally, wireless LAN APs periodically transmit beacons. [Operation of radar equipment] Hereinafter, the operation of the radar apparatus of this embodiment will be described with reference to FIGS. 3 to 6. However, as described above, the description of the normal operation (detection, observation, ranging) in the radar operation is omitted.
  • FIG. 5 is a flowchart for mainly explaining the operation of the appendix 2 in the radar apparatus.
  • the data processing apparatus 15 executes transmission / reception processing on a function of avoiding radio wave interference that is different from normal operation in radar operation.
  • the receiver 13 receives the radio wave signal received by the antenna unit 10 (step S1).
  • the receiver 13 receives a radio signal including a beacon transmitted from an AP of a wireless LAN, which is an existing arbitrary wireless communication device.
  • the receiver 13 transfers the radio wave signal received by the antenna unit 10 and amplified by the low noise amplifier 130 to the distributor 20.
  • the distributor 20 distributes the radio signal (including the beacon) to the frequency converter 131 and the wireless communication device 21.
  • the wireless communication device 21 executes a reception process of receiving a radio signal of a specified frequency (a set channel band) based on the setting from among the radio signals output from the distributor 20. (Step S2).
  • the wireless communication device 21 When the radio communication device 21 can receive the radio signal output from the distributor 20, the wireless communication device 21 outputs the radio signal to the control / analysis device 22 after predetermined processing (YES in step S3). On the other hand, the radio communication device 21 does not receive radio signals other than the radio signal and does not function (NO in step S3).
  • the control / analysis device 22 receives the radio signal output from the wireless communication device 21 and executes an analysis process (step S4).
  • the control / analysis device 22 executes an analysis process for extracting various types of information including information for identifying the AP from the beacon transmitted from the wireless LAN AP as a radio wave signal. To do.
  • the control / analysis device 22 transmits information as an analysis result to the data processing device 15 (step S5).
  • FIG. 6 is a flowchart for explaining processing executed by the data processing device 15 of the radar main body 1.
  • the data processing device 15 executes processing related to the function of avoiding radio wave interference based on the information indicating the analysis result transmitted from the control / analysis device 22. That is, the data processing device 15 refers to the pulse pattern table 152 and the log table 153 stored in the storage unit 151 and executes processing related to the radio wave interference avoidance function.
  • the data processing device 15 creates log table information based on the information indicating the analysis result transmitted from the control / analysis device 22 and records it in the log table 153 (step S10).
  • FIG. 4 is a diagram illustrating an example of log table information recorded in the log table 153.
  • the log table information is recorded for each elevation angle and azimuth angle of the antenna, and the information included in the beacon received by the wireless communication device 21 can identify the wireless LAN AP.
  • Information that can identify the AP of the wireless LAN includes, for example, international standard information (such as HT), certification country (such as JP and US), domestic standard information (information such as technical standard conformity certification), address information, and ID information.
  • HT means the international standard IEEE802.11n for wireless LAN.
  • the address information is a so-called MAC address.
  • the ID information is an SSID (Service Set Identifier).
  • the log table information includes information such as an interference level that indicates a reception intensity (dBm) of a radio signal and a time that indicates a reception time as information acquired from the radar main body 1.
  • the data processing device 15 has a pulse pattern table 152 in advance separately from the log table 153.
  • the pulse pattern table 152 is updated, for example, by adding a new type of pulse pattern or changing an existing pulse pattern by an online or offline method according to changes in national laws and standards.
  • FIG. 3 is a diagram showing an example of pulse pattern information recorded in the pulse pattern table 152.
  • the pulse pattern information is information defining an effective pulse pattern set for each international standard information (HT), certified country (JP), and domestic standard information in the log table information.
  • the effective pulse pattern is defined separately from the operation pulse pattern used in the normal operation for radar operation. That is, the effective pulse pattern is detected by the DFS function of any existing wireless communication apparatus (here, the wireless LAN AP) that is the target of the radio wave interference avoidance process, and the radio wave interference avoidance process by the DFS function. This is a target pulse pattern.
  • the effective pulse pattern has, for example, a plurality of types of pulse patterns defined for weather radar (for convenience, two types of T1 and T2).
  • Type T1 and T2 are pulse patterns defined by parameters such as pulse width (PW1, PW2), pulse repetition frequency (PRF1, PRF2), number of pulses (PN1, PN2), frequency sweep width (FW1, FW2), etc. is there.
  • the data processing device 15 executes a collation process between the log table information and the pulse pattern information as a process on the radio wave interference avoiding function (step S11).
  • the data processing device 15 selects and sets an effective pulse pattern that matches the international standard information, the authentication country, and the national standard information included in the log table information from the pulse pattern table 152 based on the collation result (NO in step S12, S13). ).
  • the data processor 15 may perform the process which updates the pulse pattern table 152 by an online or offline method (YES of step S12, S15).
  • the data processing device 15 refers to the log table 153 shown in FIG. 4 as preprocessing of the collation processing, and in the log table information, from the information for each of the plurality of elevation angles and azimuth angles including the same address information and ID information, the interference level Selects the information of the strongest elevation and azimuth.
  • the elevation angle and azimuth angle at which the interference level is the strongest means a direction (elevation angle and azimuth angle) in which the reception intensity with respect to the radio signal (beacon) from the AP of the wireless LAN is strong. Therefore, the effective pulse pattern transmitted from the antenna of the elevation angle and the azimuth angle is most effective for the DFS function of the wireless LAN AP.
  • the data processing device 15 performs collation processing with the pulse pattern information using the international standard information, the certification country, and the domestic standard information of the log table information corresponding to the selected elevation angle and azimuth. Accordingly, the data processing device 15 sets an effective pulse pattern (for example, T1) to be collated from the pulse pattern table 152.
  • an effective pulse pattern for example, T1
  • the data processing device 15 outputs the set effective pulse pattern (T1) to the signal processing device 14 and, as described above, the direction most effective for the DFS function of the AP of the wireless LAN (the elevation angle and direction of the antenna).
  • a transmission process to transmit to (corner) is executed (step S14). That is, the signal processing device 14 outputs the effective pulse pattern (T1) set by the data processing device 15 to the transmitter 12, and executes transmission processing.
  • the transmitter 12 generates a transmission pulse corresponding to the effective pulse pattern and outputs it to the antenna unit 10. Thereby, the radar main body 1 transmits a radio wave signal corresponding to the transmission pulse from the antenna having the most effective elevation angle and azimuth angle from the antenna unit 10.
  • the reception function of the wireless communication device 21 is used to transmit from any existing wireless communication device (wireless LAN AP). Receive radio signals.
  • the wireless communication device 21 receives only a radio signal having a specified frequency (a set channel band), that is, a radio signal (beacon) having a frequency that causes radio interference with the radar main body 1. Therefore, the data processing device 15 and the radio wave interference with the radar main body 1 when the information (including the identification information of the wireless LAN AP) of the received signal (beacon) is input from the control / analysis device 22.
  • the presence of a wireless LAN AP, which is a cause of this, is recognized. Therefore, the control / analysis device 22 does not need a special function for performing the process of determining the radio wave interference with the radar main body 1 when the radio wave signal is analyzed.
  • the data processing device 15 refers to the pulse pattern table 152 and the log table 153, sets an effective pulse pattern based on the collation processing of each information, and the direction that is most effective for the DFS function of the wireless LAN AP ( It is possible to execute transmission processing for transmission to the elevation angle and azimuth angle of the antenna. That is, it is possible to execute transmission processing on the function of avoiding radio wave interference using the effective pulse pattern.
  • the wireless LAN AP which is an arbitrary wireless communication device, detects a radio wave signal corresponding to an effective pulse pattern of type T1, for example, with the DFS function, and detects the radio wave signal (transmitted radio wave from the radar device). , Stop transmission of radio signals of frequencies (channel band) that may cause radio wave interference, and execute channel switching processing.
  • an arbitrary radio communication device detects a radio wave signal corresponding to the effective pulse pattern by the DFS function, and as a result, the presence of the radar device. Is likely to perform processing for recognizing and avoiding radio wave interference.
  • the radar main body 1 guides the use frequency of the arbitrary radio communication device to a frequency different from the use frequency of the radar main body 1 as a result. It becomes possible to make it. Therefore, it is possible to avoid radio wave interference between the radar main body 1 and an arbitrary wireless communication device.
  • the data processing device 15 refers to the log table 153 as shown in FIG. 4 and detects radio wave interference based on the elevation angle, the azimuth angle, the reception time, and the like. By executing the transmission process on the radio wave interference avoidance function that periodically transmits the effective pulse pattern, the radio wave interference avoidance function can be effectively exhibited.
  • the data processing device 15 uses the information indicating the analysis result from the control / analysis device 22 to determine the international standard, certification country, domestic standard, etc. of any wireless communication device (wireless LAN AP). Can be acquired and recorded in the log table 153. Therefore, the data processing device 15 can recognize the specification and existence of the wireless LAN AP that may cause radio wave interference based on the information. Thereby, for example, on the operation side of the radar device, there is a possibility that an effective measure for avoiding radio wave interference may be realized for any existing wireless LAN AP. As a specific example, all effective pulse patterns corresponding to the international standard, the certification country, and the domestic standard of the AP of the wireless LAN may be transmitted. [First Modification] FIG.
  • FIG. 7 is a block diagram showing a partial configuration of the radar main body 1 relating to a modification of the present embodiment.
  • a radio wave interference avoidance function is realized by the signal processing device 14 and the data processing device 15 included in the radar main body 1 without using the attachment unit 2 of the present embodiment. It is a configuration.
  • movement (action effect) regarding the other structure of the radar main body 1, and a radio interference avoidance function description is abbreviate
  • the signal processing device 14 of the present modification includes a signal processing unit (A) 141 that performs reception processing related to normal operation in radar operation, and a signal that performs reception processing on the function of avoiding radio wave interference.
  • a processing unit (B) 142 is included.
  • the signal processing device 14 converts the received signal from the receiver 13 into a digital signal by the A / D converter 140 and outputs the digital signal to the signal processing unit (A) 141 and the signal processing unit (B) 142.
  • the receiver 13 performs reception processing of the radio wave signal received by the antenna unit 10 illustrated in FIG. 1 and outputs it to the signal processing device 14.
  • the received signal includes a radio wave signal (beacon) transmitted from a wireless LAN AP in addition to the radar signal.
  • the data processing device 15 processes the digital signal output from the signal processing unit (B) 142 during reception processing on the radio wave interference avoidance function.
  • the data processing device 15 includes an analysis unit (software) 154 that executes analysis processing similar to that of the control / analysis device 22 described above, and extracts information included in a beacon transmitted from a wireless LAN AP. Information indicating the analysis result is created.
  • the data processing device 15 executes the same processing as that of the present embodiment described with reference to FIG. Further, the data processing device 15 of the present modification processes the digital signal output from the signal processing unit (A) 141 at the time of reception processing related to normal operation in radar operation. [Second Modification] FIG.
  • the attachment unit 2 of the present modification includes a plurality of types of wireless communication devices 21A and 21B having different frequency characteristics and wireless specifications, and a corresponding plurality of types of control / analysis devices 22A and 22B. It is.
  • the data processing device 15 sets the contents of the pulse pattern table 152 and the log table 153 described above according to information indicating the analysis results of the plural types of control / analysis devices 22A and 22B.
  • a radio signal transmitted from an existing arbitrary radio communication device which is a target of radio wave interference avoidance processing, is transmitted via the receiver 13 and the distributor 20 of the radar main body 1 to perform radio communication. Reception is performed by either or both of the devices 21A and 21B.
  • the radio communication devices 21A and 21B there is a high possibility that radio signals that cannot be received on one side can be received on the other side. Therefore, one of the control / analysis devices 22A and 22B corresponding to the received wireless communication device can analyze the radio signal transmitted from the arbitrary wireless communication device as described above.
  • a wireless LAN AP is taken up as a wireless communication device.
  • the present invention is not limited to this, and various wireless communication devices that may cause radio wave interference with a radar device are used. Is also applicable.
  • the DFS function is taken up as a function of avoiding radio wave interference, but the present invention is not limited to this, and any other system may be used as long as it has a function of detecting a radio signal of a radar apparatus and stopping the use of the frequency. .

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

Abstract

La présente invention concerne un dispositif radar qui, dans un mode de réalisation, est pourvu d'une unité de réception et d'une unité de traitement d'informations. L'unité de réception reçoit, à partir d'un signal radio reçu par l'intermédiaire d'une antenne, un signal radio ayant la même fréquence que la fréquence utilisée par le dispositif radar. Sur la base du signal radio reçu par l'unité de réception, l'unité de traitement d'informations crée des informations relatives à une fonction d'évitement d'interférences radio et qui comprennent des informations pour identifier un dispositif de communication sans fil donné qui a émis le signal radio.
PCT/JP2017/039134 2017-03-21 2017-10-30 Dispositif radar et procédé pour éviter des interférences radio WO2018173350A1 (fr)

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JP2018540487A JP6641024B2 (ja) 2017-03-21 2017-10-30 レーダ装置及び電波干渉の回避方法

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JP2017054135 2017-03-21
JP2017-054135 2017-03-21

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WO2018173350A1 true WO2018173350A1 (fr) 2018-09-27

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TW (1) TWI688783B (fr)
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WO2021033437A1 (fr) * 2019-08-20 2021-02-25 東芝インフラシステムズ株式会社 Dispositif d'analyse, procédé d'analyse et dispositif radar

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JP2016173286A (ja) * 2015-03-17 2016-09-29 日本無線株式会社 与干渉抑圧方法、与干渉抑圧プログラム及び与干渉抑圧装置

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WO2021033437A1 (fr) * 2019-08-20 2021-02-25 東芝インフラシステムズ株式会社 Dispositif d'analyse, procédé d'analyse et dispositif radar
JP2021032602A (ja) * 2019-08-20 2021-03-01 東芝インフラシステムズ株式会社 解析装置、解析方法およびレーダ装置
JP2021119361A (ja) * 2019-08-20 2021-08-12 東芝インフラシステムズ株式会社 解析装置、解析方法およびレーダ装置
EP4020001A4 (fr) * 2019-08-20 2023-08-16 Toshiba Infrastructure Systems & Solutions Corporation Dispositif d'analyse, procédé d'analyse et dispositif radar
JP7379414B2 (ja) 2019-08-20 2023-11-14 東芝インフラシステムズ株式会社 解析装置、解析方法およびレーダ装置
CN111427018A (zh) * 2020-04-22 2020-07-17 安徽华可智能科技有限公司 一种雷达干扰装备干扰效果评估方法

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