To suppress erroneous extraction of a noise peak based on phase noise.SOLUTION: A radar device pertaining to an embodiment of the present invention comprises a transmission unit, a reception unit, a conversion unit, a setting unit and a peak extraction unit. The transmission unit transmits a chirp wave by a transmission signal whose frequency continuously increases or decreases. The reception unit generates a beat signal for each reception antenna from the reception signal of the chirp signal reflected by a target and received by a plurality of reception antennas and the transmission signal. The conversion unit converts the beat signal generated by the reception unit into a frequency spectrum that indicates the distribution of signal strength to the distance from the target and relative speed. The setting unit sets a first threshold for extraction of peak to the relative speed for each distance on the basis of the average value of signal strength per distance in the frequency spectrum converted by the conversion unit. The peak extraction unit extracts a peak exceeding the first threshold set by the setting unit from the frequency spectrum as a peak of the target.SELECTED DRAWING: Figure 1B

    【課題】位相雑音に基づくノイズピークの誤抽出を抑制すること。【解決手段】実施形態に係るレーダ装置は、送信部と、受信部と、変換部と、設定部と、ピーク抽出部とを備える。送信部は、周波数が連続的に増加または減少する送信信号によってチャープ波を送信する。受信部は、物標によるチャープ波の反射波を複数の受信アンテナで受信した受信信号と送信信号とから受信アンテナ毎にビート信号を生成する。変換部は、受信部によって生成されたビート信号を物標との距離および相対速度に対する信号強度の分布を示す周波数スペクトルへ変換する。設定部は、変換部によって変換された周波数スペクトルにおいて距離毎の信号強度の平均値に基づいて相対速度に対するピーク抽出の第1閾値を当該距離毎に設定する。ピーク抽出部は、設定部によって設定された第1閾値を超えるピークを物標のピークとして周波数スペクトルから抽出する。【選択図】図1B


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    Title :

    RADAR DEVICE AND TARGET DETECTION METHOD


    Additional title:

    レーダ装置および物標検出方法


    Contributors:

    Publication date :

    2019-02-21


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    G01S RADIO DIRECTION-FINDING , Funkpeilung / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS



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