几类非高斯噪声模型的转换研究  

Research on Models Transformation of Some Non Gaussian Noises

作　　者：山拜.达拉拜 黄玉划[2] 

机构地区：[1]新疆大学信息科学与工程学院,新疆乌鲁木齐830046 [2]东南大学无线电工程系,江苏南京210096

出　　处：《电子学报》2004年第7期1090-1093,共4页Acta Electronica Sinica

基　　金：国家自然科学基金 (No .60 0 62 0 0 1 )

摘　　要：分析了几类非高斯噪声模型的统计特性 ;在此基础上采用矩估计法给出了它们的模型转换算法 .采用无惯性非线性变换器研究了双模噪声环境下确定信号的最大似然检测方法 ;采用迭代法给出了双模噪声环境下余弦信号参量的最大似然估计方法 ;在此基础上从信号检测和参量估计性能两个方面验证了模型转换算法的有效性 .仿真结果表明 ,把双峰噪声当作双模噪声是准确的 .The statistical characteristics of some non-Gaussian noises were analyzed. On this ground the moments estimations were used to deduce the models transformation algorithms of these noises. The inertialess nonlinear transformer was employed to research the maximum likelihood detections of deterministic signals; and the recurrence was adopted to study the maximum likelihood estimations of cosine signals parameters in bimodal noises; on these grounds the validities of models transformation algorithms were verified by ways of analyzing the performance of signals detections and parameters estimations. The simulation results indicated that it was exact to regard the bi-peak noises as bimodal noises. Thus it was demonstrated that the thought of bimodal noise is practicable.

关 键 词：非高斯噪声 双模噪声 最大似然准则 无惯性非线性变换器 

分 类 号：TN911[电子电信—通信与信息系统]