摘要
在InISAR成像中,形成干涉的两天线在成像积累时间内所接收信号彼此存在波程差,引起了两ISAR像的失配,降低了三维成像效果.文中重点分析了两ISAR像的干涉波程差与目标运动参数间的关系,推导了失配准量与三维运动参数间的关系式.通过对计算得到的目标散射中心的时变曲线的拟合估计出目标三维运动参数,进而补偿失配准量,完成成像.仿真效果表明该处理方法有效.
The analysis of the mismatch between two ISAR imagings used in interferometric phase measurement and its effect on target 3-D imaging are discussed. The relation of the two interferometry ISAR imagings with the target 3-D motion parameters is deduced. Based on this analysis, the 3-D motion estimation and compensation method is put forward. Computer simulation shows that the results method is effective.
出处
《西安电子科技大学学报》
EI
CAS
CSCD
北大核心
2003年第6期739-743,共5页
Journal of Xidian University
基金
国家部委科技预研资助项目(57 7 2 10)
关键词
InISAR
三维成像
干涉
像失配
失配准量
运动补偿
逆合成孔径雷达
Computer simulation
Interferometry
Motion compensation
Phase measurement
Radar imaging
Radar target recognition
Radar tracking
Three dimensional
