摘要
分析了星载ISAIL对空间碎片目标成像的原理,根据空间碎片目标自旋运动的特点,提出了一种结合压缩感知与复逆Radon变换的低重频成像算法。该算法结合压缩感知技术和复逆Radon变换,只需发射带宽很窄的激光信号,并对单个距离单元处理即可实现对目标的高分辨率二维成像,解决了系统脉冲重频率对成像的限制。仿真验证表明:此算法不仅可以解决对空间碎片目标成像过程中系统重频率不够的问题,而且通过大幅度减小信号带宽降低了激光信号调制技术对成像的影响,算法是可行性。
The imaging principle of spaceborne ISAIL for space debris is analyzed. An imaging algorithm combining compressed sensing with complex inverse Radon transform is proposed to solve the limitation of low Pulse Repetition Frequency (PRF). By using this algorithm, the compact of laser signal modulation on imaging is reduced through reducing the bandwidth at the same time. The imaging experiment with numerical data verifies the feasibility and ef- fectiveness of the proposed method.
出处
《空军工程大学学报(自然科学版)》
CSCD
北大核心
2011年第4期28-32,共5页
Journal of Air Force Engineering University(Natural Science Edition)
基金
国家"973"计划资助项目(2010CB731903)
国家自然科学基金委员会与中国民用航空局联合基金资助项目(61001210)