一種改進的高分辨極化目標檢測算法
An improved method for high-resolution polarization target detection
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摘要: 針對寬帶高分辨雷達體制,研究了雜波環(huán)境中的目標檢測問題,引用了極化域線性積累濾波的思路以提高雷達接收信號的信雜比,在此基礎上利用波形固有的徑向高分辨力對目標進行一維距離成像,結合目標所占據(jù)的分辨單元區(qū)間內的幅值及其極化狀態(tài)相對于雜波所對應的分辨單元內的幅值及其極化狀態(tài)有著較大的差異這一客觀事實,提出了基于 Stokes矢量 Frobenius范數(shù)非參數(shù)檢測方法,實驗仿真結果表明該方法能夠有效改善雷達的檢測性能。
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關鍵詞:
- 高分辨; 極化; 目標檢測
Abstract: The problem of detecting targets in the cluttered circumstance with wide-band high-resolution radar is studied. A way of improving SCR(Signal-to-Clutter-Ratio) is cited by linear integration filtering in polarization domain. With the intrinsic high resolution of wide-band waveform, one-dimension range profile of radar target can be obtained. In connection with the fact that the values of Stokes vector and polarization attitude of target greatly differ from which of cluttered circumstance, a new target detection method is presented. Simulation experimental results show that radars detection performance can be improved significantly by using the algorithm presented in this paper. -
莊釗文,肖順平,王雪松,雷達極化信息處理及應用,北京,國防工業(yè)出版社,1999,10 13,291-359[2]王雪松,寬帶極化信息處理的研究,[博士學位論文],長沙,國防科技大學,1999[3]李永禎,王雪松,肖順平,等,一種新的高分辨極化目標檢測方法,國防科技大學學報,2000,22(6),65-69[4]李永禎,王雪松,肖順平,莊釗文,基于非線性積累的高分辨極化目標檢測,紅外與毫米波學報,2000,19(4)307-312[5]李永禎,王雪松,肖順平,等,基于強散射點徑向積累的高分辨極化目標檢測方法,電子學報,2000,29(3)307-310[6]N. C. Currie, R. D. Hayes, R. N. Trebits, Millimeter-wave Radar Clutter, Boston, London, Artech House, 1992, Chap2-3.[7]R. Barakat, Statistics of the stokes parameter, J. of the Optical Society of America, 1987, A-4(7).1-28. 121-156.[8]黃德雙,韓月秋,基于位置相關的高分辨雷達目標檢測方法,電子科學學刊,1997,19(5),584-590. -
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