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Radar apparatus configured to suppress effectes of grating lobes upon detection of direction of target based on phase difference between received reflected waves
Radar apparatus configured to suppress effectes of grating lobes upon detection of direction of target based on phase difference between received reflected waves
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机译:雷达设备被配置为基于接收到的反射波之间的相位差来抑制在检测目标方向时的光栅波瓣的影响
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摘要
A radar apparatus has a plurality of receiving antennas and an array transmitting antenna controlled to successively vary the direction of a transmitted beam within a range which includes a target detection range of directions. The direction of any target within the target detection range is detected based on a phase difference between incident reflected waves of adjacent receiving antennas. To eliminate false targets resulting from aliasing, each detected target is authenticated based upon closeness of its detected direction to the current transmitted beam direction. The receiving antennas and transmitting antenna are configured to exclude directions of grating lobes of the transmitted beam from the detection range, and thereby suppress effects of received reflected waves that originate from grating lobes.
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