一种相控阵雷达单脉冲和差测角改进方法  

An Improved Method of Monopulse Sum⁃Difference Angle Measurement for Phased Array Radar

作　　者：陈家瑞 高鹏 王志鹏 熊俊军 CHEN Jiarui;GAO Peng;WANG Zhipeng;XIONG Junjun(The 723 Research Institute of China State Shipbuilding Corporation,Yangzhou 225101,China)

机构地区：[1]中国船舶集团有限公司第七二三研究所,江苏扬州225101

出　　处：《雷达科学与技术》2025年第2期206-215,共10页Radar Science and Technology

摘　　要：相控阵雷达采用单脉冲和差波束对目标跟踪测量时,当跟踪波束远离方位、俯仰法线时,和差波束在阵面坐标系内会出现展宽、扭曲现象,严重影响了相控阵雷达和差测角精度。针对该问题,本文提出了一种改进后的相控阵雷达单脉冲和差测角方法,利用相控阵雷达波束在正弦空间坐标系内不随扫描角变化的特点,在正弦空间坐标系内进行和差测角得到目标偏差,结合正弦空间坐标系内波束指向值,通过坐标转换得到目标在阵面坐标系中的位置,并通过仿真验证了该方法对提高相控阵雷达单脉冲和差测角精度的有效性。In the process that the monopulse sum-difference beam is used to track and measure the target in phased array radar,when the tracking beam is far away from the azimuth and elevation normal,the sum-difference beam will be widened and distorted in the array coordinate system,which will seriously affect the accuracy of angle measurement.In order to solve this problem,an improved monopulse sum‐difference angle measurement method for phased array tracking radar is proposed in this paper.Using the characteristic that the beam of phased array radar does not change with the scanning angle in the sinusoidal space coordinate system,the target deviation is obtained by the sumdifference angle measurement in the sinusoidal space coordinate system,and the position of the target in the array coordinate is obtained by coordinate transformation combined with the beam direction in the sinusoidal space coordinate system.The effectiveness of the method is verified by simulation.

关 键 词：相控阵雷达 和差测角 正弦空间 测角精度 

分 类 号：TN953.5[电子电信—信号与信息处理]