舰载无源综合脉冲孔径雷达干扰抑制

张雅斌; 陈伯孝; 张守宏; 尚海燕

doi:10.3724/SP.J.1146.2006.00842

舰载无源综合脉冲孔径雷达干扰抑制

doi: 10.3724/SP.J.1146.2006.00842

张雅斌^{①②;陈伯孝},
陈伯孝,
张守宏,
尚海燕

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国家部委基金资助课题

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出版历程
- 收稿日期: 2006-06-13
- 修回日期: 2006-11-16
- 刊出日期: 2008-01-19

Interference Suppression for Ship-Based Passive Synthetic Impulse and Aperture Radar

摘要

摘要: 该文对舰载无源综合脉冲孔径雷达工作中的射频与非平稳多径干扰性质进行了分析。在此基础上，根据射频干扰相关性质，使用拉伸处理后部分正距离单元和所有负距离单元内的回波数据，利用距离余弦加权估算待检单元内射频干扰统计特性，然后根据干扰功率强于雷达回波的先验信息，对待检单元回波进行特征分解后滤除干扰成分。同时，针对多径传播产生的非平稳干扰，在保持海杂波主成分统计特性不变条件下，通过构造空域与快时间域的二维滤波器对非平稳干扰进行抑制。最后，实测数据结果表明了分析与方法的正确有效性。
- 舰载无源综合脉冲孔径雷达; 相关矩阵; 干扰抑制
Abstract: Interference statistic characteristics are analyzed in ship-based passive synthetic Impulse and Aperture Radar (SIAR). After estimating covariance matrix at range bin interested using data from some positive and all negative frequency bins with cosine weights, eigen-decomposition is applied to interested data for co-channel interference suppression provided that its power is stronger than target echoes. Meanwhile, improved suppression approach to nonstationary interference from multipath propagation is proposed by forming adaptive STAP in fast-time domain and maintaining slow-time statistical properties of the first order sea clutter output approximately unperturbed by filter fluctuation. Analysis and suppression approach are verified by real data.

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参考文献(1)

陈伯孝,许辉,张守宏. 舰载无源综合脉冲/孔径雷达及其若干关键问题[J].电子学报.2003, 31(12):1776-1779Chen B X, Xu H, and Zhang Sh H. Ship-based passive synthetic impulse and aperture radar and some key questions [J]. Acta Ectronica Sinica, 2003, 31(12): 1776-1779.[2]陈伯孝, 孟佳美, 张守宏. 岸-舰多基地地波超视距雷达的发射波形及其调制[J].西安电子科技大学学报.2005, 32(1):7-10Chen B X, Meng J M, and Zhang Sh H. Design of transmitting waveforms and its demodulation in the coast-ship multi-static ground wave over-the-horizon radar[J]. Journal of Xidian University, 2005, 32(1): 7-10.[3]邢孟道, 保铮, 强勇. 天波超视距雷达瞬态干扰抑制[J]. 电子学报, 2002, 30(6): 823-826.Xing M D, Bao Z, and Qiang Y. Transient interference excision in OTHR [J]. Acta Ectronica Sinica, 2002, 30(6): 823-826.[4]Turley M. Impulsive noise rejection in HF radar using a linear prediction technique [J]. IEEE National Radar Conference, 2003(9): 358-362.[5]Zhou H, Wen B Y, and Wu SH C. Dense radio frequency interference suppression in HF radars[J].IEEE Signal Processing Letters.2005, 12(5):361-364[6]Wan X R, Ke H Y, and Wen B Y. Adaptive co-channel interference suppression based on subarrays for HFSWR[J].IEEE Signal Processing Letters.2005, 12(2):162-165[7]Yuri I A, Nicholas K S, and Stuart J A.Stochastic-constraints method in nonstationary hot-clutter cancellation-Part II: Unsupervised training applications [J].IEEE Trans. on Aerospace And Electronic Systems.2000, 36(1):132-147[8]Fante R and Torres J A. Cancellation of diffuse jammer multipath by an airborne adaptive radar [J].IEEE Trans. on Aerospace and Electronic Systems.1995, 31(2):805-820[9]Xie Junhao, Yuan Yeshu, and Liu Yongtan. Super-resolution processing for HF surface wave radar based on pre-whitened MUSIC [J].IEEE Journal of Oceanic Engineering.1998, 23 (4):313-321

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