一种基于搜索基线的SAR干扰定位技术  

An Approach Based on Search Baseline Model for RFI Location in SAR System

作　　者：李磊[1] 庄龙[1] 王友林[1] 洪惠宇 LI Lei;ZHUANG Long;WANG You-lin;HONG Hui-yu(Nanjing Research Institute of Electronics Technology,Nanjing 210013,China)

机构地区：[1]南京电子技术研究所,江苏南京210013

出　　处：《中国电子科学研究院学报》2022年第11期1049-1056,共8页Journal of China Academy of Electronics and Information Technology

基　　金：“十二五”规划专项课题资助项目。

摘　　要：针对机载低截获合成孔径雷达(Synthetic Aperture Radar, SAR)成像无法准确定位无意干扰源的问题,提出了一种机载SAR成像高精度无意干扰定位技术,该方法充分利用合成孔径雷达自身搜索基线长的特征,再结合SAR回波数据的无意干扰高精度测距结果即可实现干扰的精准定位。此外,本文在定位模型的基础上详细推导了各种参数影响的理论边界,量化分析了各种条件的定位误差。最终通过仿真数据验证了该方法的有效性,使得SAR成像的防空压制空地作战更加有效。Airborne low probability of intercept synthetic aperture radar(SAR)can not accurately locate unintentional interference.Aimed at this problem,a method for high-precision location of interference is proposed.This method makes full use of SAR’s long search baseline characteristic,combines high preci-sion ranging results of interference from SAR echo,and achieves accurate location of interference.Be-sides,impact analysis of SAR parameters on location estimation is introduced,the measurement boundary is applied,the positioning error is analyzed.The result is verified by simulation.The SAR performance of the suppression of enemy air defenses can be improved.

关 键 词：SAR 干扰定位 搜索基线 

分 类 号：TN959.3[电子电信—信号与信息处理]