海杂波尖峰特性研究及仿真分析  

Sea Spike Characteristics Studies and Simulation Analyses

作　　者：杨俊岭[1] 李大治[1] 万建伟[1] 皇甫堪[1] 

机构地区：[1]国防科技大学电子科学与工程学院,1所信号处理长沙410073

出　　处：《系统仿真学报》2007年第8期1836-1840,共5页Journal of System Simulation

基　　金：国防预研基金资助项目(41321090202)

摘　　要：介绍了基于海尖峰的复合海杂波雷达截面积(RCS)模型,根据浪涌稳态性原理从时间、幅度和频率三个方面对海尖峰进行了定义;对C波段实测雷达海杂波数据进行了统计分析,并为分析杂波“拖尾”特性构造了修正的均方差检验法;以K分布为模型,研究了在指定雷达虚警概率下海尖峰发生次数的统计特性。仿真分析表明,二项分布和泊松分布均可以在低虚警概率下较好地描述海尖峰的统计特性。A compound model of sea-clutter radar cross-section （RCS） based on sea spike was introduced and a definition of spike with the profiles of time, attenuation and frequency based on principle of stationary surge was proposed, C band real radar sea-clutter data were analyzed and the modified mean square difference test for analyzing the ＂tail＇＂ of clutter was constructed. The statistic characteristics of spike under the specified false-alarm probability based on K-distributed model were studied. The results indicate that both binomial distribution and Poisson distribution well fit the statistic characteristics of sea spike under lower false-alarm probability.

关 键 词：海尖峰 杂波 K分布 复合RCS模型 C波段雷达数据 二项分布 

分 类 号：TN955[电子电信—信号与信息处理]