Radon_CPF+NLS算法估计性能研究  

Estimation Capability Study on Radon_CPF + NLS Algorithm

作　　者：赵博威 周剑雄[1] 付强[1] 

机构地区：[1]国防科学技术大学电子科学与工程学院,长沙410073

出　　处：《重庆理工大学学报（自然科学）》2015年第10期108-113,共6页Journal of Chongqing University of Technology：Natural Science

基　　金：国家自然科学基金资助项目(61101179)

摘　　要：三阶多项式相位信号常用于无线通信、雷达、声纳系统、生物学、地震学等领域,但其参数估计较为困难。针对此问题,采用基于Radon_CPF算法和单纯型法的Radon_CPF+NLS算法实现了对三阶多项式相位信号的相位参数估计,分析了算法的估计性能,并针对实际信号处理中可能遇到的问题进行了仿真实验,重点研究了数据长度、信号能量、信号参数临近等情况对算法参数估计的影响,讨论了该方法适用的范围,为该方法应用于实际信号处理提供了理论依据。Cubic phase signals appear in numerous fields,such as radio communication,radar,sonar,biology,geophysics and so on. But there＇s much difficult to estimate the phase parameters of the signals. To solve this problem,this paper adopted Radon_CPF ＋ NLS algorithm based on Radon_CPF algorithm and the Nelder-Mean simplex algorithm to estimate the phase parameters of cubic phase signals. We focused on the discussion and analysis about the influencing factors of the algorithm including the length of the signal,the power of the signals,the condition that the parameters is near to the capability of algorithm. The results of the simulation discussed the scope of application and provided the theory basis for the application of the Radon_CPF ＋ NLS algorithm in actual signal processing.

关 键 词：三阶多项式相位信号 Radon_CPF+NLS 单纯型法 

分 类 号：TN957[电子电信—信号与信息处理]