摘要
提出了一种基于最小二乘的K-分布参数估计方法,并利用仿真对该方法进行了验证。这种方法利用变量替换将杂波矩量和分布参数之间的关系转换为线性函数,然后通过最小二乘方法求解线性超定方程组获得K-分布参数的估计,这样能够避免常规矩量法在处理实际杂波数据时由于数据长度和噪声所导致的错误估计的发生,利用最小二乘法提高了估计精度。
This paper proposes a method for estimating the parameters of the K-distribution based on least square, and validates the method by simulation. This method uses variable replacing to transform the relationship between the clutter moment and distribution parameters into the linear functions,then seeks for the solution of linear overdetermined equations by the method of least square to estimate the parameters of K-distribution,which can avoid the inaccurate estimation led by the data length and noise in the process of general moment method dealing with the real clutter data,and raise the estimation accuracy by using the method of least square.
出处
《舰船电子对抗》
2010年第4期84-86,共3页
Shipboard Electronic Countermeasure
关键词
K-分布
最小二乘
参数估计
K-distribution
least square
paramter estimation
