基于干涉原理的汽车防撞雷达高精度测角方法

High-precision angle measurement method of automotive anti-collision radar based on interference theory

Abstract

本发明涉及一种基于干涉原理的汽车防撞雷达高精度测角方法,属于雷达通信和汽车电子技术领域。本发明的汽车防撞雷达的高精度测角基于长基线/短波长以及互质波长的干涉原理,采用多组雷达收发装置,每组发射机为其相应的接收机提供共源同相等幅的本振信号,同时该组接收机采用近似相同的部件构成;每组接收机的相应天线接收同一回波成为干涉信号,再对产生的相位差进行相位差鉴别处理,并将处理结果输出至数字相位处理模块,处理后的多个信道信号采用发射机发射互质波长/频率的信号发射方式,并结合干涉原理实现方向角去模糊,从而得到高精度方向角。
The invention relates to a high-precision angle measurement method of an automotive anti-collision radar based on an interference theory, belonging to the technical field of radar communication and the automotive electronics. The high-precision angle measurement of the automotive anti-collision radar of the invention is based on the interference theory of long baseline/short wavelength and co-prime wavelength, multiple groups of radar receiving and transmitting devices are used in the method, each group of transmitters provides a common-source, in-phase and uniform-amplitude local oscillator signal for the corresponding receivers thereof, and simultaneously, the group of receivers is composed of approximately same components; corresponding antennae of each group of receivers receive the same echo to form an interference signal, distinguish the generated phase difference and output the processing result to a digital phase processing module; and the processed multiple channel signals are transmitted in a signal transmitting mode that the transmitters transmit the co-prime wavelength/frequency, and direction angle deblurring is realized based on the inference theory, thus, the high-precision direction angle is obtained.

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Cited By (1)

    Publication numberPublication dateAssigneeTitle
    CN-104793209-AJuly 22, 2015王方圆基于干涉原理的汽车防撞雷达高精度测角方法