快速机扫对系统角度偏差影响分析  

Impact Analysis of Fast Mechanical Scan on the System Angle Deviation

作　　者：张先义[1] 李品[1] 郑昱[1] 刘伟[1] 施赛楠 ZHANG Xianyi;LI Pin;ZHENG Yu;LIU Wei;SHI Sainan(Nanjing Research Institute of Electronics Technology,Nanjing 210039,China;National Key Laboratory of Radar Signal Processing,Xidian University,Xi＇an 710071,China)

机构地区：[1]南京电子技术研究所,南京210039 [2]西安电子科技大学雷达信号处理国家重点实验室,西安710071

出　　处：《现代雷达》2018年第7期54-56,共3页Modern Radar

基　　金：国家自然科学基金资助项目(61671357)

摘　　要：机扫雷达在波束扫描过程中，由于天线转动引入额外的系统角度偏差导致测角精度的下降，尤其在快速机扫时引入的系统角度偏差甚至超过测角标准差。文中基于常见的单脉冲测角，从机理上推导了机扫天线转速对系统角度偏差的影响，并提出了一种系统角度偏差补偿方法，计算机仿真结果验证了文中推导和系统角度偏差补偿方法的有效性。The additional system angle deviation was introduced for the antenna rotation in the process of mechanical radar beam scanning, and the accuracy of angular measurement was decreased, especially it was worse in the process of fast scanning. The impact of mechanical antenna rotating speed on the system angle deviation was derived on their mechanism based on the mono-pulse angle measurement, and then a compensation method was presented. The simulation result proves the validity of the derivation and method.

关 键 词：机扫雷达 天线转速 系统角度偏差 

分 类 号：TN957.51[电子电信—信号与信息处理]