摘要
分布式星载SAR系统利用沿航迹干涉对地面运动目标测速时,由于较长基线导致严重的测速模糊。该文在研究鲁棒性中国剩余定理的基础上,利用剩余定理在满足某些约束条件下得到唯一解的原理,分析了多基线和多频率分布式星载SAR-ATI系统解速度模糊的方法,同时推导了多基线和多频率的约束条件,以及最大测速值。仿真结果表明该文算法能有效地解分布式星载SAR-ATI系统动目标速度模糊,为分布式星载SAR系统设计与基线设计提供了一定的指导作用和参考价值。
When distributed Space-borne SAR measures the ground moving target velocity using along track interferometry, larger baseline leads to serious velocity ambiguity. On the basis of exploring robust Chinese remainder theorem, this paper analyzes the method of deblurring velocity ambiguity for multi-baseline and multi-frequency distributed Space-borne SAR, which uses the principle that remainder theorem determines the unique resolution on some conditions. Moreover, the constraints of multi-baseline and multi-frequency, and the maximum measurement velocity value are derived. The simulation results show that the algorithm is efficient for deblurring velocity ambiguity, play a guiding role and provides reference for system design and baseline design of distributed Space-borne SAR.
出处
《电子与信息学报》
EI
CSCD
北大核心
2009年第10期2493-2497,共5页
Journal of Electronics & Information Technology
关键词
分布式星载合成孔径雷达
中国剩余定理
沿航迹干涉
动目标检测
速度模糊
Distributed Space-borne Synthetic Aperture Radar （SAR）
Chinese Remainder Theorem （CRT）
Along Track Interferometry （ATI）
Moving Target Identification（MTI）
Velocity ambiguity
