分布式多通道雷达成像技术

韩兴斌; 胡卫东; 郁文贤; 杜小勇

doi:10.3724/SP.J.1146.2006.00450

分布式多通道雷达成像技术

doi: 10.3724/SP.J.1146.2006.00450

基金项目:

国家部级基金项目资助课题

计量
- 文章访问数: 4007
- HTML全文浏览量: 115
- PDF下载量: 1103
- 被引次数: 0
出版历程
- 收稿日期: 2006-04-10
- 修回日期: 2006-10-24
- 刊出日期: 2007-10-19

An Imaging Technique Based on Distributed Multi-channel Radars

摘要

摘要: 该文针对稀疏分布的多发射/接收阵元所形成的多通道雷达系统，提出了一种分布式多通道雷达成像技术。利用发射/接收阵元角度分集和信号分集的特点，将各个通道上的信号进行相干合成获得在目标散射函数波数域二维支撑域上的等效观测。经过支撑域整形和数据重采样，可反演出目标散射函数的二维图像。该雷达成像系统不需要庞大的天线，只需要多通道雷达的单次快拍即可成像，从而避免了ISAR成像中的运动补偿问题。并且由于采样点在波数上的位置已知，可对重构的目标二维散射函数进行准确地定标。文中给出了具有宽带发射信号的多通道成像系统，仿真结果表明了该系统具有很好的成像性能。
- 多通道雷达;稀疏阵列;雷达成像
Abstract: This paper proposes an non-cooperative target imaging technique based on the distributed multi-channel radar system, which consists of multiple sparsely-located transmitters and receivers. By coherently processing the signals received in multiple radar channels, the wave-number samples in a plane are obtained, from which the two-dimensional reflectivity function of target is reconstructed. Due to the simultaneous formation of multi-channel echo data and coherent processing of a single snap, it does not require large antennas, and the complicated motion compensation performed in ISAR imaging is not needed. Meanwhile, the reconstructed images are naturally scaled because the sampling locations in wave-number space are known. To validate the imaging performance, the distributed radar systems with wide-band transmitted signal are designed respectively, and the simulations are demonstrated.

HTML全文

参考文献(1)

Steinberg B D, Carlson D L, and Lee W. Microwave imaging of aircraft [J].In Proc. IEEE.1988, 76(12):1578-1592[2]Steinberg B. Radar imaging from a distorted array: The radio camera algorithm and experiments [J].IEEE Trans. on Antennas and Propagation.1981, 29(5):740-748[3]Fishler E, Haimovich A, Blum R, Chizhik D, Cimini L, and Valenzuela R. MIMO radar: an idea whose time has come [C]. Proceedings of the IEEE Radar Conference, Philadelphia, PA, April 2004: 71-78.[4]Forsythe K W, Bliss D W, and Fawcett G S. Multiple-input multiple-output (MIMO) radar: performance s [C][J].The Thirty-Eighth Conference on Signals Systems and Computers, California, Nov.2004, 1:310-315[5]Fishler E, Haimovich A, Blum R, Cimini R, Chizhik D, and Valenzuela R. Performance of MIMO radar systems: advantages of angular diversity [C][J].the Thirty-Eighth Conference on Signals Systems and Computers, California, Nov.2004, 1:305-309[6]Bliss D W and Forsythe K W. Multiple-input multiple- output (MIMO) radar and imaging: degrees of freedom and resolution [C]. The Thirty-Seventh Conference on Signals, Systems and Computers, Asilomar, CA., Nov. 2003, 1: 54-59.[7]保铮, 张庆文.一种新型的米波雷达－综合脉冲和孔径雷达[J]. 现代雷达, 1995, 17(2): 1-13. Bao Zheng and Zhang Qing-wen. A new style metric wave radar[J]. Modern Radar, 1995, 17(2): 1-13.[8]陈伯孝，张守宏，综合脉冲孔径雷达的主要特点及其四抗性能[J]. 西安电子科技大学学报, 1997, 24(12):140-146. Chen Bai-xiao and Zhang Shou-hong, A study of the multiple performance for sparse-array synthetic impulse and aperture radar. Journal of Xidian University, 1997, 24(12): 140-146.[9]Kirk D R, Bergin J S, Techau P M, and Carlos J E D. Multi-static coherent sparse aperture approach to precision target detection and engagement [C]. 2005 IEEE International Radar Conference, Arlington, Virginia, USA, May 2005: 579-584.[10]Hai Deng, Polyphase code design for orthogonal netted radar systems [J]. IEEE Trans. on Signal Processing, 2004, 52(11): 3126-3135.

施引文献

资源附件(0)

访问统计