摘要
该文分析了典型飞机惯性导航系统(INS)的误差特性及其对机载合成孔径雷达(SAR)运动补偿精度和高分辨率成像的影响。分析结果表明INS定位漂移误差是低频误差,并随时间呈级数增加。初始阶段INS漂移误差较小,与杂波锁定和自聚焦方法相结合,可以实现机载SAR高分辨率成像。
The motion compensation errors of the airborne Synthetic Aperture Radar (SAR,) using the typical aircraft Inertial Navigation System (INS) are analyzed. It is conduded that the navigation errors of INS are of low frequency and divergent. The INS errors cari be kept in a relativelv small.range at.the beginning stage. Therefore, the high resolution SAR, imaging can be achieved by combining INS with clutterlock and autofocus mothods.
出处
《电子与信息学报》
EI
CSCD
北大核心
2002年第1期12-18,共7页
Journal of Electronics & Information Technology
基金
863计划308主题资助项目
关键词
合成孔径雷达
运动补偿
惯性导航系统
机载雷达
Synthetic aperture radar, Motion compensation, Inertial navigation system