Study on moving target detection algorithm for FM-CW SAR

Computer Engineering and Applications ›› 2012, Vol. 48 ›› Issue (9): 120-123.

• 数据库、信号与信息处理 • Previous Articles Next Articles

Study on moving target detection algorithm for FM-CW SAR

GENG Shumin1, LI Xing2

1.Unit 63999 of PLA
2.Beijing Institute of Tracking and Telecommunications Technology, Beijing 100094, China

Received:1900-01-01 Revised:1900-01-01 Online:2012-03-21 Published:2012-04-11

FM-CW SAR动目标检测算法研究

耿淑敏1，李星2

1.中国人民解放军63999部队
2.北京跟踪与通信技术研究所，北京 100094

Abstract

Abstract: The methods of moving target detection for single-antenna airborne FM-CW SAR are investigated, combining the idea of producing two ports echo data by transmitting triangular waveform with DPCA technique. RVP, which can be ignored in general FM-CW SAR imaging, causes the phase mismatching of two ports signal, failing to detect the moving target. So the affection of RVP on detection results is analyzed in emphasis, and the compensation method is given, as the principle of the moving target detection for FM-CW SAR is analyzed. The deduction and the simulation prove the algorithm is feasible and correct.

Key words: Synthetic Aperture Radar（SAR）, Frequency Modulated Continuous Wave（FM-CW）, Displaced Phase Center Antenna（DPCA）, single-antenna, moving target detection

摘要： 借鉴发射调频三角波信号构建双通道回波数据的思想，结合DPCA技术，对机载单天线FM-CW SAR动目标检测算法进行深入研究。在常规FM-CW SAR成像过程中可忽略的RVP项，在杂波对消时会引起严重通道相位失配，导致动目标检测失败，因此，在分析FM-CW SAR动目标检测原理的同时，重点研究了RVP对动目标检测结果的影响并给出补偿方法。理论推导和仿真实验证实了算法的可行性与正确性。

关键词: 合成孔径雷达（SAR）, 调频连续波（FM-CW）, 天线相位中心偏置（DPCA）, 单天线, 动目标检测

GENG Shumin1, LI Xing2. Study on moving target detection algorithm for FM-CW SAR[J]. Computer Engineering and Applications, 2012, 48(9): 120-123.

耿淑敏1，李星2. FM-CW SAR动目标检测算法研究[J]. 计算机工程与应用, 2012, 48(9): 120-123.

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Study on moving target detection algorithm for FM-CW SAR

FM-CW SAR动目标检测算法研究

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