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Simulation of Ground Clutter of Airborne PD Radar Based on Fluctuant RCS

To solve the problem of simulation of ground clutter with fluctuant radar cross-section (RCS) received by airborne pulse doppler(PD) radar,a method based on the analysis of cohered video is illustrated in this paper. Its theory,basic principles, formula and program steps are discussed in detail. This method has three advantages. First, it is suited for the simulation of ground environment scattering. Next, the simulation authenticity is improved via replacing average RCS by complex fluctuant RCS. Finally, the cohered video of clutter affecting the detection of moving target can be obtained. Computer simulation is made for different pulse repetition frequencies(PRF) which affect the ground clutter. The Doppler and range ambiguities are discussed. This paper also discusses the influence of ground clutter spectrum width(w f) change on the spectrum of mainlobe and sidelobe clutter. The agreement of the simulation results with the theory analysis results indicates that this method can be used to estimate the ground clutter correctly and effectively.