RADAR DEVICE, AND RADAR DEVICE CONTROL METHOD

To provide a radar device and radar device control method that can prevent throughput from increasing.SOLUTION: A radar device according to an embodiment comprises: a reception unit; a FET processing unit; and a peak extraction unit. The reception unit is configured to receive a reflection wave in w...

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Bibliographic Details
Main Author OKAMOTO SHOJI
Format Patent
LanguageEnglish
Japanese
Published 19.09.2019
Subjects
ANALOGOUS ARRANGEMENTS USING OTHER WAVES
DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES
LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES
MEASURING
PHYSICS
RADIO DIRECTION-FINDING
RADIO NAVIGATION
TESTING
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Summary:To provide a radar device and radar device control method that can prevent throughput from increasing.SOLUTION: A radar device according to an embodiment comprises: a reception unit; a FET processing unit; and a peak extraction unit. The reception unit is configured to receive a reflection wave in which a transmission wave having a frequency successively changed is reflected by a target by a plurality of reception antennas. The FET processing unit is configured to, when conducting two-dimensional FFT processing to a beat signal based on the reflection wave received by an arbitrary reception antenna of the plurality of reception antennas, conduct a two-dimension-th FET processing thereto in a first range. The peak extraction unit is configured to extract a peak corresponding to a target from the frequency spectrum serving a processing result of the FFT processing unit. Further, the FFT processing unit is configured to, when conducting the two-dimensional FFT processing for other reception antenna other than the arbitrary reception antenna, conduct the two-dimension-th FET processing in a second range limiting the first range on the basis of a position of the peak extracted by the peak extraction unit.SELECTED DRAWING: Figure 2 【課題】処理量が嵩むことを防止することができるレーダ装置およびレーダ装置の制御方法を提供すること。【解決手段】実施形態に係るレーダ装置は、受信部と、ＦＦＴ処理部と、ピーク抽出部とを備える。受信部は、周波数が連続的に変化する送信波が物標によって反射された反射波を複数の受信アンテナで受信する。ＦＦＴ処理部は、複数の受信アンテナのうち、任意の受信アンテナで受信した反射波に基づくビート信号に対して２次元ＦＦＴ処理を行う場合に、２次元目のＦＦＴ処理を第１の範囲で行う。ピーク抽出部は、ＦＦＴ処理部による処理結果である周波数スペクトルから物標に対応するピークを抽出する。また、ＦＦＴ処理部は、任意の受信アンテナ以外の他の受信アンテナについて２次元ＦＦＴ処理を行う場合、ピーク抽出部によって抽出されたピークの位置に基づき第１の範囲を限定した第２の範囲で２次元目のＦＦＴ処理を行う。【選択図】図２
Bibliography:Application Number: JP20180049023