信噪比加权空间分集雷达目标检测算法

doi:10.3969/j.issn.1001-2400.2011.04.015

J4 ›› 2011, Vol. 38 ›› Issue (4): 82-88.doi: 10.3969/j.issn.1001-2400.2011.04.015

• Original Articles • Previous Articles Next Articles

SNR weighting based target detection algorithm for spatial diversity radar

ZHOU Shenghua;LIU Hongwei;LIU Baochang;YIN Kuiying

(National Lab. of Radar Signal Processing, Xidian Univ., Xi'an 710071， China)

Received:2010-04-30 Online:2011-08-20 Published:2011-09-28
Contact: ZHOU Shenghua E-mail:zhou3sheng@gmail.com

Abstract

Abstract:

For a spatial diversity radar, signals received by widely separated radar sites may have different signal-noise-ratios (SNRs) due to different distances between radar sites and target, which would decrease the detection performance of the conventional incoherent accumulating detector (IAD). Based on the Neyman-Pearson criterion, a signal fusion based target detection algorithm is proposed, which weights signals received by different radar sites according to channel SNRs estimated. With channel SNRs of radar sites known, this algorithm achieves the upper bound of the detection performance. Numerical experiments indicate that the proposed algorithm gives a much better detection performance than the conventional IAD, especially when channel SNRs are low.

Key words: radar target detection, spatial diversity radar, signal fusion based detection, detection with SNR weighting

ZHOU Shenghua;LIU Hongwei;LIU Baochang;YIN Kuiying. SNR weighting based target detection algorithm for spatial diversity radar[J].J4, 2011, 38(4): 82-88.

References

［1］胡亮兵, 刘宏伟, 刘保昌, 等. MIMO雷达发射方向图匹配和波形优化方法［J］. 西安电子科技大学学报, 2009, 36(6): 1022-1028.
Hu Liangbing, Liu Hongwei, Liu Baochang, et.al. Transmit Beampattern Matching Design and Waveform Optimization for MIMO Radar［J］. Journal of Xidian University, 2009, 36(6): 1022-1028.
［2］ Fishler E, Haimovich A, Blum R, et al. MIMO Radar: an Idea Whose Time Has Come［C］// Radar Conference, Proceedings of the IEEE. Philadelphia: IEEE, 2004: 71-78.
［3］ Haimovich A, Blum R, Cimini L. MIMO Radar with Widely Separated Antennas［J］. Signal Processing Magazine, IEEE, 2008, 25(1): 116-129.
［4］ Fishler E, Haimovich A, Blum R, et al. Spatial Diversity in Radars-models and Detection Performance［J］. IEEE Transactions on Signal Processing, 2006, 54(3): 823-838.
［5］杨明磊, 陈伯孝, 张守宏. 微波综合脉冲孔径雷达方向图综合研究［J］. 西安电子科技大学学报, 2007, 34(5): 738-742.
Yang Minglei, Chen Baixiao, Zhang Shouhong. Study on the Pattern Synthesis of Microwave SIAR Arrays［J］. Journal of Xidian University, 2007, 34(5): 738-742.
［6］ Yang M L, Chen B X, Qin G, et al. Spatial-temporal Super Resolution Algorithm of Multi-carrier-frequency MIMO Radar［J］. Journal of Electronics and Information Technology, 2009, 31(9): 2048-2052.
［7］ Deng H. Polyphase Code Design for Orthogonal Netted Radar Systems［J］. IEEE Transactions on Signal Processing, 2004, 52(11): 3126-3135.
［8］ Liu B, He Z, Zeng J, et al. Polyphase Orthogonal Code Design for MIMO Radar Systems［C］//IEEE Radar Conference 2006. Shanghai: IEEE, 2006: 1-4.
［9］ Hu L B, Liu H W, Zhou S H, et al. Convex Optimization Applied to Transmit Beampattern Systhesis and Signal Waveform Design for MIMO Radar［C］//IET Radar Conference. Guilin: IET, 2009: 78.
［10］周生华, 刘宏伟. MIMO雷达目标空间和频率散射多样性研究［J］. 电子与信息学报, 2010, 32(1): 38-42.
Zhou Shenghua, Liu Hongwei. Scattering Properties of Spatial and Frequency Diversity MIMO Radar Targets［J］. Journal of Electronic and Information Technology, 2010, 32(1): 38-42.
［11］ Zhou S H, Liu H W, Zhao Y B, et al. Target Spatial and Frequency Scattering Diversity Property for Diversity MIMO Radar［J］. Signal Processing, 2011, 91(2): 269-276.
［12］ Fante R. Multifrequency Detection of a Slowly Fluctuating Target［J］. IEEE Transactions on Aerospace and Electronic Systems, 1996, 32(1): 495-497.
［13］ Vannicola V. Detection of Slow Fluctuating Targets with Frequency Diversity Channels［J］. IEEE Transactions on Aerospace and Electronic Systems, 1974, 10(1): 43-52.
［14］ Antonia M, Fernando L. Distribution of a Sum of Weighted Central Chi-Square Variables［J］. Communications in Statistics-Theory and Methods, 2005, 34(3): 515-524.
［15］赵树杰, 赵建勋. 信号检测与估计理论［M］. 北京: 清华大学出版社, 2005.
［16］丁鹭飞, 耿富录. 雷达原理［M］. 西安: 西安电子科技大学出版社, 2002.

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SNR weighting based target detection algorithm for spatial diversity radar

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