弹载合成孔径雷达成像处理及定位误差分析  

MISSILE-BORNE SAR IMAGING AND ERROR ANALYSIS OF POSITIONING

作　　者：燕英[1] 周荫清[1] 李春升[1] 许丽香[1] 

机构地区：[1]北京航空航天大学电子工程系,北京100083

出　　处：《电子与信息学报》2002年第12期1932-1938,共7页Journal of Electronics & Information Technology

摘　　要：论文基于弹载合成孔径雷达(SAR)空间几何关系,描述了雷达信号数学模型;给出了弹载SAR成像方法;详细分析了弹载SAR水平初始方位角、载体速度的测量误差对于成像定位的影响;推导了各种误差影响成像结果的数学表达式;给出了非直线运动大下冲角情况下,误差分析的计算机仿真和在匹配制导中的实验结果。In this paper, based on the geometrical relationships in missile-borne Synthetic Aperture Radar(SAR), the model of radar signal and the method of imaging are discussed. In the imaging process, the effects of errors in measuring the maximum and minimum azimuth angles, and the missile's velocities in three directions on positioning of missile-borne imaging are analyzed in detail. The corresponding expressions are deduced, simulations in the state of high undershooting and nonlinear movement and experimental results in matching guidance are presented.

关 键 词：弹载合成孔径雷达 成像处理 定位误差 原理 SAR 匹配制导 

分 类 号：TN958[电子电信—信号与信息处理]