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基于zr log(z)期望的K分布参数估计
引用本文:胡文琳,王永良,王首勇.基于zr log(z)期望的K分布参数估计[J].电子与信息学报,2008,30(1):203-205.
作者姓名:胡文琳  王永良  王首勇
作者单位:1. 国防科技大学电子信息与工程学院,长沙,410073;空军雷达学院雷达兵器运用工程重点实验室,武汉,430019
2. 空军雷达学院雷达兵器运用工程重点实验室,武汉,430019
基金项目:国家部级科研项目 , 高等学校优秀青年教师教学科研奖励计划
摘    要:该文用zr log(z) 期望扩展了基于z log(z)期望的K分布参数估计方法,导出了基于zr log(z) 期望的K分布参数估计表达式.分析比较了阶数r取不同值时,基于zr log(z)期望的参数估计精度.仿真结果表明,在K分布雷达尖杂波参数范围内,阶数r小于1时,基于zr log(z)期望的参数估计精度高于z log(z)期望法和正规化对数估计法.

关 键 词:K分布  雷达杂波  矩方法  参数估计  期望法  分布参数  参数估计  Based  Parameters  Estimation  估计法  对数  规化  范围  杂波参数  雷达  仿真结果  估计精度  阶数  比较  分析  表达式  估计方法  扩展
文章编号:1009-5896(2008)01-0203-03
收稿时间:2006-06-13
修稿时间:2006-11-20

Estimation of the Parameters of K-distribution Based on zr log(z) Expectation
Hu Wen-lin,Wang Yong-liang,Wang Shou-yong.Estimation of the Parameters of K-distribution Based on zr log(z) Expectation[J].Journal of Electronics & Information Technology,2008,30(1):203-205.
Authors:Hu Wen-lin  Wang Yong-liang  Wang Shou-yong
Affiliation:School of Electronic Science and Engineering, NUDT, Changsha 410073, China; Key Research Lab.,Wuhan Radar Institute, Wuhan 430019, China
Abstract:The estimation of the parameters of K-distribution based on the z log(z) expectation approach is extended to zr log(z) expectation. The parameter estimation expression of the based on zr log(z) expectation is derived. When r is taken different values, the accuracies of the estimations based on the zr log(z) expectation are analyzed and compared with one another. Simulation results show that in the parameters range of K distribution radar spiky clutter, the estimation based on zr log(z) expectation is more accurate than z log(z) expectation and Normalised Log Estimator (NLE) approaches when r is less than unity.
Keywords:K distribution  Radar clutter  MOM  Parameter estimation
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