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Physical modeling and spectrum spread analysis of surface clutter in forward scattering radar

Science China(Information Sciences) 2010年第11期53卷 2310-2322页

作者： LONG Teng, HU Cheng, ZENG Tao & LI XiaoLiang Radar Research Laboratory, Department of Electronic Engineering, Beijing Institute of Technology, Beijing 100081, China Radar Research Laboratory Department of Electronic Engineering Beijing Institute of Technology Beijing China

In this paper, based on the processing results of measured clutter data in forward scattering radar, a special phenomenon that the clutter spectrum spread is insensitive to the wind speed and carrier frequency is observed. The pendulum model is first time introduced into the physical modeling and formation mechanism analysis of surface clutter, and the quantitative expression of clutter spectrum spread is analytically obtained. Under the assumption of pendulum model, the processing results of measured clutter data agree well with the results of theoretical analysis, which fully verifies the correctness of pendulum model and reveals the formation mechanism of surface clutter spectrum in forward scattering radar. Furthermore, according to the stability of clutter spectrum spread with respect to carrier frequencies and wind speed, the optimal cutofrequencies of clutter filter can be obtained, which establishes the basis for moving target detection and accurate parameters estimation.

关键词： forward scattering radar clutter spectrum pendulum model formation mechanism

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EVALUATION OF ADAPTIVE SPACE-TIME PROCESSING FOR INCLINED SIDEWAYS LOOKING ARRAY AIRBORNE RADARS

EVALUATION OF ADAPTIVE SPACE-TIME PROCESSING FOR INCLINED SI...

引用

1996 CIE International Conference of Radar(ICR’96)

作者： Liao Guisheng Bao Zheng Xu Zhiyong Institute of Electronic Engineering Xidian University

ISBN: (纸本)0780329147

＜正＞This paper evaluates the performance of partial adaptive space-time adaptive processing （STAP）approaches based on Doppler prefiltering for inclined sideways looking array（ISLA）airborne radars,in which the angle between the axis of a linear antenna array with that of platform flight is not *** ISLA the STAP is more complexity than that in sideways looking array（SLA）,which is the particular case that these two axes are identical. After analyzing the characteristics of clutter spectrum in ISLA,the principle of reduced rank STAP based on prefiltering is proposed and ***,several computer simulations are presented.

关键词： airborne radar radar signal processing radar clutter adaptive signal processing adaptive filters filtering theory Doppler effect linear antenna arrays interference suppression array signal processing direction-of-arrival estimation adaptive space-time processing inclined sideways looking array airborne radar performance STAP Doppler prefiltering linear antenna array platform flight clutter spectrum reduced rank STAP computer simulations

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