WO2018138992A1 - レーダ装置及び電波干渉の回避方法 - Google Patents
レーダ装置及び電波干渉の回避方法 Download PDFInfo
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- WO2018138992A1 WO2018138992A1 PCT/JP2017/039133 JP2017039133W WO2018138992A1 WO 2018138992 A1 WO2018138992 A1 WO 2018138992A1 JP 2017039133 W JP2017039133 W JP 2017039133W WO 2018138992 A1 WO2018138992 A1 WO 2018138992A1
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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
- G01S13/06—Systems determining position data of a target
- G01S13/08—Systems for measuring distance only
- G01S13/10—Systems for measuring distance only using transmission of interrupted, pulse modulated waves
- G01S13/22—Systems for measuring distance only using transmission of interrupted, pulse modulated waves using irregular pulse repetition frequency
-
- 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
- G01S13/10—Systems for measuring distance only using transmission of interrupted, pulse modulated waves
- G01S13/24—Systems for measuring distance only using transmission of interrupted, pulse modulated waves using frequency agility of carrier wave
-
- 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
-
- 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
- G01S7/36—Means for anti-jamming, e.g. ECCM, i.e. electronic counter-counter measures
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K3/00—Jamming of communication; Counter-measures
- H04K3/20—Countermeasures against jamming
- H04K3/22—Countermeasures against jamming including jamming detection and monitoring
- H04K3/224—Countermeasures against jamming including jamming detection and monitoring with countermeasures at transmission and/or reception of the jammed signal, e.g. stopping operation of transmitter or receiver, nulling or enhancing transmitted power in direction of or at frequency of jammer
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K3/00—Jamming of communication; Counter-measures
- H04K3/20—Countermeasures against jamming
- H04K3/22—Countermeasures against jamming including jamming detection and monitoring
- H04K3/224—Countermeasures against jamming including jamming detection and monitoring with countermeasures at transmission and/or reception of the jammed signal, e.g. stopping operation of transmitter or receiver, nulling or enhancing transmitted power in direction of or at frequency of jammer
- H04K3/226—Selection of non-jammed channel for communication
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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
- G01S13/95—Radar or analogous systems specially adapted for specific applications for meteorological use
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K2203/00—Jamming of communication; Countermeasures
- H04K2203/30—Jamming or countermeasure characterized by the infrastructure components
- H04K2203/32—Jamming or countermeasure characterized by the infrastructure components including a particular configuration of antennas
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K2203/00—Jamming of communication; Countermeasures
- H04K2203/30—Jamming or countermeasure characterized by the infrastructure components
- H04K2203/36—Jamming or countermeasure characterized by the infrastructure components including means for exchanging jamming data between transmitter and receiver, e.g. in forward or backward direction
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- 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 radio wave interference determination unit, a selection unit, and a transmission unit.
- the radio wave interference determination means determines the presence or absence of radio wave interference based on a radio wave signal received via an antenna.
- the selection unit selects a predefined pulse pattern based on the avoidance function of the wireless communication apparatus having a radio wave interference avoiding function when the radio wave interference determining unit determines that there is radio wave interference.
- the transmitting means transmits a radio signal corresponding to the pulse pattern selected by the selecting means from the antenna.
- FIG. 1 is a block diagram for explaining a configuration of a radar apparatus according to the embodiment.
- FIG. 2 is a diagram illustrating an example of a pulse pattern table according to the embodiment.
- FIG. 3 is a diagram illustrating an example of a table for countermeasures against radio wave interference according to the embodiment.
- FIG. 4 is a flowchart for explaining the operation of the radar apparatus according to the embodiment.
- FIG. 5 is a block diagram for explaining a modification of the embodiment.
- FIG. 1 is a block diagram showing a configuration of a radar apparatus according to this embodiment.
- the radar device 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 19.
- 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 the transmission / reception processing of the radar signal, 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 not limited to a pulse pattern necessary for normal operation (detection, observation, ranging) in normal radar operation (may be referred to as an operation pulse pattern for convenience).
- a pulse pattern related to the radio wave interference avoiding function of the present embodiment is output to the transmitter 12.
- the receiver 13 digitally processes the radio wave signal received by the antenna unit 10 and outputs the processed received signal to the signal processing device 14.
- the received signal includes not only the 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 signal processing device 14 includes an operation pulse processing unit 15 that outputs the operation pulse pattern to the transmitter 12 at the time of transmission and processes a reception signal output from the receiver 13 at the time of reception. That is, the operation pulse processing unit 15 processes transmission / reception signals necessary for normal operation (detection, observation, distance measurement) in normal radar operation.
- the data processing device 19 performs data processing necessary for normal operation (detection, observation, ranging) in radar operation based on transmission / reception processing by the operation pulse processing unit 15.
- the description of the configuration and operation of the operation pulse processing unit 15 and the transmission / reception processing related to the normal operation (detection, observation, distance measurement) in radar operation is omitted. Further, for the sake of convenience, it may be referred to as a transmission / reception process on a radio wave interference avoiding function, as distinguished from a transmission / reception process related to a normal operation in radar operation.
- the signal processing apparatus 14 includes a pulse pattern selection unit 16, a table 17, and a radio wave interference determination unit 18 as components for realizing a radio wave interference avoidance function.
- the pulse pattern selection unit 16 outputs a pulse pattern selected from a plurality of predefined pulse patterns to the transmitter 12. These pulse patterns are defined separately from the operation pulse patterns used in the normal operation (detection, observation, ranging) in radar operation.
- the plurality of pulse patterns are selected from the pulse pattern table 170 included in the table 17.
- the table 17 includes a pulse pattern table 170 and a radio wave interference countermeasure table 171.
- FIG. 2 is a diagram illustrating an example of the pulse pattern table 170.
- the pulse pattern table 170 includes, for example, a plurality of types defined for weather radar based on national laws and standards (for convenience, two types T1 and T2).
- the pulse pattern is as follows.
- 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.
- PW1, PW2 pulse width
- PRF1, PRF2 pulse repetition frequency
- PN1, PN2 number of pulses
- FW1, FW2 frequency sweep width
- the pulse pattern table 170 is updated by adding a new type of pulse pattern or changing an existing pulse pattern by an online or offline method, for example, according to changes in national laws and standards. It can be carried out.
- FIG. 3 is a diagram showing an example of a table 171 for countermeasures against radio wave interference.
- the countermeasure table 171 is a type indicating the presence / absence of radio wave interference and an effective pulse pattern for each elevation angle and azimuth angle of the antenna during reception processing on the radio wave interference avoidance function, as will be described later. It is a table for recording T1, T2.
- the radio wave interference determination unit 18 determines the presence or absence of radio wave interference with the wireless communication device, as will be described later, upon reception of transmission / reception processing on the radio wave interference avoidance function.
- a wireless LAN access point having a DFS function is assumed as a wireless communication apparatus, for example.
- the radio wave interference determination unit 18 determines whether the reception level of the radio wave signal received by the antenna varies in the distance direction (time direction) based on the radio wave signal received by the antenna during reception processing on the radio wave interference avoidance function. If it is within the range (constant so as not to occur in a natural phenomenon), it is determined that there is radio wave interference with the wireless communication device or the like that has transmitted the radio wave signal.
- FIG. 4 is a flowchart for explaining the operation of the radar apparatus 1.
- the description of the normal operation (detection, observation, ranging) in the radar operation by the operation pulse processing unit 15 is omitted.
- the signal processing device 14 executes transmission / reception processing on the radio wave interference avoidance function separately from transmission / reception processing during normal operation in radar operation.
- the signal processing device 14 performs a reception process on a radio wave interference avoiding function (step S1).
- the receiver 13 outputs a reception signal after digitally processing the radio wave signal received by the antenna unit 10 to the signal processing apparatus 14.
- the received signal includes a radio signal transmitted from a wireless communication device such as a wireless LAN.
- the radio wave interference determining unit 18 executes a determination process for determining the presence or absence of radio wave interference with a wireless communication device such as a wireless LAN during reception processing on the radio wave interference avoiding function (step S2). Judgment processing is possible by paying attention to the difference between weather echoes and wireless communication signals.
- the radio wave interference determination unit 18 has a predetermined variation in the distance direction (time direction) of the reception level of the radio signal received by the antenna for each elevation angle and azimuth angle of the antenna at the time of reception. If it is within the range (constant so as not to occur in a natural phenomenon), it is determined that there is radio wave interference.
- a predetermined range a binary change that cannot occur due to a natural phenomenon
- the radio wave interference determining unit 18 sets the presence / absence of radio wave interference for each elevation angle and azimuth angle in the radio wave interference countermeasure table 171 based on the radio wave interference determination result.
- the signal processing device 14 shifts to transmission processing on the radio wave interference avoiding function (step). S3 YES).
- the signal processing device 14 may shift to transmission processing after the radio wave interference determining unit 18 determines whether or not there is radio wave interference for all azimuth angles for each elevation angle of the antenna. You may transfer to a transmission process immediately after the presence or absence of interference is determined.
- the pulse pattern selection unit 16 selects, for example, a pulse pattern of type T1 from the pulse pattern table 170 (step S4).
- the pulse pattern selection unit 16 may select from the pulse pattern table 170 in order, or may select from a type of pulse pattern that approximates the parameter of the operation pulse pattern, for example.
- the pulse pattern selection unit 16 selects, for example, a pulse pattern of type T1 and outputs it to the transmitter 12.
- the transmitter 12 generates a transmission pulse corresponding to the type T1 pulse pattern and outputs the transmission pulse to the antenna unit 10. Thereby, the radar apparatus 1 performs the transmission process which transmits the radio wave signal according to a transmission pulse from the antenna unit 10 (step S5).
- the signal processing device 14 After this transmission processing, the signal processing device 14 performs reception processing on the function of avoiding radio wave interference (step S6).
- the radio wave interference determination unit 18 executes a determination process for determining the presence or absence of radio wave interference in the same manner as described above (step S7).
- the transmitted type T1 pulse pattern is an effective pulse pattern in the item “valid” of the countermeasure table 171 as shown in FIG.
- Information (in this case, T1) is set (NO in step S8, S9). That is, as shown in FIG. 3, information indicating that the pulse pattern is an effective pulse pattern is set in the countermeasure table 171 for each elevation angle and azimuth angle of the antenna at the time of reception.
- the effective pulse pattern is a pulse pattern that is detected by a DFS function of an access point of a wireless LAN, for example, as a wireless communication device, and is a target of radio wave interference avoidance processing by the DFS function.
- the wireless LAN access point detects the radio signal according to the pulse pattern of type T1 by the DFS function, and stops the transmission of the radio signal determined to have radio interference, or changes the radio signal by channel switching. Change the frequency.
- the wireless LAN access point detects the effective pulse pattern, thereby recognizing the presence of the radar device 1 and avoiding radio wave interference.
- the signal processing device 14 performs transmission on the radio wave interference avoidance function according to the effective pulse pattern (here, type T1) set in the countermeasure table 171. Execute the process. Accordingly, there is a high possibility that the radio LAN access point can reliably avoid the radio wave interference by executing the radio wave interference avoidance process with the DFS function.
- the signal processing device 14 repeats the processing from step S4. That is, the pulse pattern selection unit 16 selects, for example, a type T2 pulse pattern from the pulse pattern table 170 and outputs it to the transmitter 12.
- the radio wave interference determining unit 18 determines that there is no radio wave interference
- the transmitted type T2 pulse pattern is an effective pulse pattern in the “valid” item of the countermeasure table 171. (In this case, T2) is set (NO in step S8, S9).
- the presence / absence of radio wave interference is determined by the radio wave interference determination unit 18 during reception processing on the radio wave interference avoidance function. If there is radio wave interference as a result of this determination, transmission processing on the radio wave interference avoidance function for transmitting a predefined pulse pattern is executed.
- the radio wave interference avoidance function for transmitting a predefined pulse pattern.
- FIG. 5 is a block diagram illustrating a configuration of the radar apparatus 1 according to a modification example of the present embodiment. As shown in FIG.
- the signal processing apparatus 14 includes a pulse pattern selection unit 16 and a table 17 as components for realizing a function of avoiding radio wave interference. It is the structure which abbreviate
- the pulse pattern table 170 included in the table 17 may be used, and the countermeasure table 171 may be omitted. Further, as in the present embodiment, the description of the configuration and operation of the operation pulse processing unit 15 and the transmission / reception processing related to the normal operation (detection, observation, distance measurement) in radar operation is omitted.
- the radar apparatus 1 of the present modification increases the possibility of avoiding radio wave interference with a wireless communication device such as a wireless LAN access point by executing transmission processing on the radio wave interference avoiding function. It is in. Specifically, at the time of transmission processing on the function of avoiding radio wave interference, the pulse pattern selection unit 16 selects, for example, a pulse pattern of type T1 from the pulse pattern table 170 and outputs it to the transmitter 12. The transmitter 12 generates a transmission pulse corresponding to the type T1 pulse pattern and outputs the transmission pulse to the antenna unit 10. That is, the radar apparatus 1 executes transmission processing for transmitting a radio wave signal corresponding to the transmission pulse from the antenna unit 10.
- a wireless LAN access point having a DFS function can detect a pulse pattern of the type T1 by receiving a radio signal from the radar device 1 by the DFS function.
- the wireless LAN access point detects the pulse pattern of the type T1, it recognizes the presence of the radar device 1 and executes a process for avoiding radio wave interference.
- the pulse pattern selection unit 16 selects, for example, a type every predetermined period when the pulse pattern selection unit 16 selects a pulse pattern from the pulse pattern table 170 during the transmission processing on the radio wave interference avoidance function.
- Each pulse pattern of T1 and T2 may be selected alternately.
- a wireless LAN access point having the DFS function detects the pulse pattern by the DFS function, It is possible to execute processing for avoiding interference. Therefore, the presence of the radar apparatus 1 of the present embodiment is recognized by the access point having the DFS function, and as a result, there is a high possibility that the radio wave interference avoidance function is effectively executed.
- a wireless LAN access point 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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Abstract
Description
[第1の実施形態]
図1は、本実施形態に関するレーダ装置の構成を示すブロック図である。図1に示すように、レーダ装置1は、アンテナユニット10と、送受信切替部11と、送信機12と、受信機13と、信号処理装置14と、データ処理装置19とを有する。アンテナユニット10は、例えば、パラボラアンテナ(parabolic antenna)装置、または複数のアンテナ素子から構成されるアレーアンテナ(array antenna)装置等である。送受信切替部11は、レーダ信号の送受信処理を切り替え、送信機12からの送信パルスをアンテナユニット10に転送し、またはアンテナユニット10により受信された電波信号を受信機13に転送する。
[レーダ装置の動作]
図4は、レーダ装置1の動作を説明するためのフローチャートである。ここで、前述したように、本実施形態では、運用パルス処理部15による、レーダ運用上の通常動作(検出、観測、測距)については説明を省略する。本実施形態では、信号処理装置14は、レーダ運用上の通常動作時の送受信処理とは別に、電波干渉の回避機能上の送受信処理を実行する。
[変形例]
図5は、本実施形態に変形例に関するレーダ装置1の構成を示すブロック図である。図5に示すように、本変形例のレーダ装置1では、信号処理装置14は、電波干渉の回避機能を実現するための構成要素として、パルスパターン選択部16及びテーブル17を有し、本実施形態に関する電波干渉判断部18を省略した構成である。なお、これ以外の構成は、図1に示す本実施形態のレーダ装置1の構成と同様であるため、説明を省略する。
Claims (15)
- アンテナを介して受信した電波信号に基づいて、電波干渉の有無を判定する電波干渉判定手段と、
前記電波干渉判定手段により電波干渉が有ると判定された場合に、電波干渉の回避機能を有する無線通信装置の前記回避機能に基づいて、予め定義されたパルスパターンを選択する選択手段と、
前記選択手段により選択されたパルスパターンに応じた電波信号を前記アンテナから送信する送信手段と
を具備するレーダ装置。 - 前記送信手段により送信されたパルスパターンに応じた電波信号を送信後に、前記電波干渉判定手段により電波干渉が無いと判定された場合に、前記パルスパターンを電波干渉の回避機能上の有効パルスパターンとして設定する設定手段を有する、請求項1に記載のレーダ装置。
- 前記送信手段は、前記有効パルスパターンに応じた電波信号を定期的に送信する手段を含む、請求項2に記載のレーダ装置。
- 前記電波干渉判定手段は、受信時の前記アンテナの仰角及び方位角毎に電波干渉の有無を判定する、請求項1に記載のレーダ装置。
- 前記送信手段は、前記電波干渉判定手段により電波干渉が有ると判定された仰角及び方位角に、前記選択手段により選択されたパルスパターンに応じた電波信号を前記アンテナから送信する、請求項4に記載のレーダ装置。
- 前記選択手段は、前記電波干渉判定手段により電波干渉が無いと判定されるまで、予め定義されたパルスパターンを変更して前記送信手段に出力する、請求項1から5のいずれか1項に記載のレーダ装置。
- 前記予め定義されたパルスパターンを更新する手段を有する、請求項1から6のいずれか1項に記載のレーダ装置。
- 前記電波干渉判定手段は、受信時の前記アンテナの仰角及び方位角毎に電波干渉の有無を判定し、
前記設定手段は、前記有効パルスパターンを前記アンテナの仰角及び方位角毎に設定する、請求項2に記載のレーダ装置。 - 前記送信手段は、前記アンテナの仰角及び方位角毎に、前記有効パルスパターンに応じた電波信号を定期的に送信する手段を含む、請求項8に記載のレーダ装置。
- 前記予め定義されたパルスパターンは、レーダの運用上の送信処理のパルスパターンとは別に定義された所定のパルスパターンである、請求項1から9のいずれか1項に記載のレーダ装置。
- 前記電波干渉判定手段は、電波干渉の回避機能上の受信処理時に、アンテナを介して受信した電波信号の受信レベルを検出し、当該受信レベルの距離方向又は時間方向の変動範囲に基づいて電波干渉の有無を判定する、請求項1から10のいずれか1項に記載のレーダ装置。
- 電波干渉の回避機能上の送信処理時に、予め定義されたパルスパターンを選択する選択手段と、
前記選択手段により選択されたパルスパターンに応じた電波信号をアンテナから送信する送信手段と
を具備するレーダ装置。 - 電波干渉の回避機能上の送信処理時に、前記選択手段は、予め定義された複数のパルスパターンから順次又は任意に選択し、
前記送信手段は、前記選択手段により選択されたパルスパターンに応じた電波信号を前記アンテナから送信する、請求項12に記載のレーダ装置。 - レーダ装置に適用する電波干渉の回避方法であって、
アンテナを介して受信した電波信号に基づいて、電波干渉の有無を判定する処理と、
前記電波干渉が有ると判定された場合に、電波干渉の回避機能を有する無線通信装置の前記回避機能に基づいて、予め定義されたパルスパターンを選択する処理と、
選択されたパルスパターンに応じた電波信号を前記アンテナから送信する処理と
を実行する、電波干渉の回避方法。 - 前記送信する処理による送信後に、前記電波干渉の有無を判定する処理により電波干渉が無いと判定された場合に、送信した前記パルスパターンを電波干渉の回避機能上の有効パルスパターンとして設定する処理を有する、請求項14に記載の電波干渉の回避方法。
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| MYPI2019000892A MY193397A (en) | 2017-01-26 | 2017-10-30 | Radar apparatus and method for avoiding radio interference |
| EP17894640.6A EP3575818A4 (en) | 2017-01-26 | 2017-10-30 | RADAR DEVICE AND METHOD FOR PREVENTING RADIOELECTRIC WAVE INTERFERENCE |
| JP2018529194A JP6383134B1 (ja) | 2017-01-26 | 2017-10-30 | レーダ装置及び電波干渉の回避方法 |
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| JP7000511B1 (ja) | 2020-07-31 | 2022-01-19 | 株式会社東芝 | レーダ装置および電波干渉低減方法 |
| US20220163620A1 (en) * | 2019-08-20 | 2022-05-26 | Toshiba Infrastructure Systems & Solutions Corporation | Analysis apparatus, analysis method, and radar apparatus |
| JP2023047319A (ja) * | 2021-09-24 | 2023-04-05 | 大韓民国気象庁 | 気象レーダーのためのノイズ除去装置および方法 |
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| CN117970333A (zh) * | 2019-12-25 | 2024-05-03 | 华为技术有限公司 | 探测信号的发射方法、装置及存储介质 |
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| JPWO2018138992A1 (ja) | 2019-02-14 |
| MY193397A (en) | 2022-10-11 |
| TWI662800B (zh) | 2019-06-11 |
| JP6383134B1 (ja) | 2018-08-29 |
| EP3575818A4 (en) | 2020-09-30 |
| CN109863419B (zh) | 2023-05-30 |
| CN109863419A (zh) | 2019-06-07 |
| TW201828622A (zh) | 2018-08-01 |
| US11320525B2 (en) | 2022-05-03 |
| US20190212427A1 (en) | 2019-07-11 |
| EP3575818A1 (en) | 2019-12-04 |
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