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从高精度机相扫雷达的需求出发,分析了传统阵面测角方式的缺陷。论述了以高精度惯性元件构成的惯性测量单元(IMU),在雷达天线阵面测角功能上的工作原理和实现算法。提出了将转台伺服方位信息作为IMU的量测对象,进行精确对准的方法,达到减小角度误差的发散速度的目的,从而满足系统对天线阵面的测角精度要求。仿真实验验证,结果与要求一致。
Based on the demand of high precision camera sweep radar, the defects of the traditional front face measurement method are analyzed. The inertial measurement unit (IMU), which is composed of high precision inertial elements, is discussed. The working principle and realization algorithm of the angle measurement function of radar antenna array are discussed. Aiming at the aim of reducing the angular divergence of the angle error, the method of using the azimuth servo position information of the turntable as the measurement object of the IMU to precisely align the system is proposed to meet the requirement of the system to measure the angular accuracy of the antenna array. Simulation experiments show that the results are consistent with the requirements.