PRC_CW 雷达地杂波分布特性模型分析

Model Analysis of the Characteristic of Land Clutter for PRC -CW Radar

针对伪码调相连续波（ＰＲＣ－ＣＷ）雷达的特殊性，指出在低俯视角情形时雷达回波信号存在展宽现象，提出了对码元回波幅度进行空间矢量叠加以得到ＰＲＣ－ＣＷ雷达回波信号的方法．通过理论分析，指出ＰＲＣ－ＣＷ雷达的概率密度分布趋近于瑞利分布，并用计算机模拟的方法进行了验证．

Based on the specialty of phase modulated pseudo random coded continuous wave (PRC -CW) radar, it is found that the time spread of radar echo signal will appear under the condition of low grazing angle. An algorithm of vector superposition to calculate PRC -CW radar echo signals is proposed. Through theoretical analysis, it is proved that the model of pdf (probability density function) for PRC -CW radar echo signals tends to approach the Rayleigh distribution. At last, the result is verified by using simulation method.