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瞬时频率方差加权导向最小方差波束形成检测器

DOI: doi:10.3969/j.issn.1006-7043.2011.06.007

Keywords: 短时傅里叶变换, 瞬时频率方差, 导向最小方差波束形成??

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Abstract:

为了克服传统线谱检测四维显示的难点,根据被动目标辐射噪声中含有高强度的稳定线谱这一特征,提出了一种针对线谱目标检测的阵列信号处理方法.从理论上分析了利用短时傅里叶变换估计含有线谱的辐射噪声的瞬时频率方差特性,将其与导向最小方差波束形成相结合,通过各方位的频率方差对波束输出进行加权,有效地提高导向最小方差波束形成对于线谱目标的检测能力.海试结果验证该方法的可行性与有效性,在多目标、强干扰的环境下,可以探测到弱线谱目标.

References

[1]  KROLIK J, SWINGLER D. Multiple broadband source location using steered covariance matrices[J]. IEEE Trans ASSP, 1989, 37(10): 1481-1494.?
[2]  朱华, 黄辉宁, 李永庆, 梅文博. 随机信号分析[M]. 北京:北京理工大学出版社, 1990: 317-319. ?ZHU Hua, HUANG Huining, LI Youqing, MEI Wenbo. Random signal analysis[M]. Beijing: Beijing Institute of Technology Press, 1990: 317-319.?
[3]  Van TREES H L. Optimum array processing[J]. New York: John Wiley & Sons Inc, 2003: 3-5.?
[4]  王永良, 陈辉彭, 应宁, 万群. 空间谱估计理论与算法[M]. 北京:清华大学出版社, 2004: 2-8.? WANG Yongliang, CHEN Huipeng, YING Ning, WAN Qun. Theories and algorithms of spectrum estimation[M]. Beijing: Tsinghua University Press, 2004: 2-8.?
[5]  CAPON J. High?resolution frequency?wavenumber spectrum analysis[J]. Proceedings of the IEEE, 1969, 57(8): 1408-1418.?
[6]  林茂庸, 柯有安. 雷达分辨理论[M]. 北京:国防工业出版社, 1984: 134-141. ?LIN Maoyong, KE Youan. Rada resolution theory[M]. Beijing: National Defence Industrial Press, 1984: 134-141.?
[7]  梁国龙. 回波信号瞬时参数序列分析及其应用研究[D]. 哈尔滨:哈尔滨工程大学, 1997: 80-82. ?LIANG Guolong. A study on instananeous parameter sequence analysis of echoes and its application[D]. Harbin: Harbin Engineering University, 1997: 134-141.?
[8]  吴国清, 李靖. 舰船噪声识别?线谱稳定性和唯一性[J]. 声学学报, 1999, 24(1): 6-11. ?WU Guqing, LI Jing. Ship radiated?noise recognition?stability and uniqueness of line spectrum[J]. Acta Acustica, 1999, 24(1): 6-11.?
[9]  HUNG H, KAVEH M. Focussing matrices for coherent signal?subspace processing[J]. IEEE Trans ASSP, 1988, 36(8): 1272-1281.?
[10]  KROLIK J,SWINGLER D. focused wide?band array processing by spatial resampling[J]. IEEE Trans ASSP, 1990, 38(2): 356-360.?
[11]  LIU W L, DING S X. An efficient method to determine the diagonal loading factor using the constant modulus feature[J]. IEEE Trans SP, 2008, 56(12): 6102-6106.?
[12]  WHALEN A D. Signal detecting in noise[M]. Beijing: Science Press, 2006: 77-78.

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