基于正则相关矩阵的信源数快速估计方法

A Signal Source Number Fast Estimation Method Based on Canonical Correlation Matrix

摘要:

针对阵列雷达的信源数快速估计问题,提出了一种基于正则相关矩阵的信源数快速估计方法。该方法将阵列雷达的接收通道划分为两个分离的二级子阵,利用此二级子阵的接收信号构造正则相关矩阵,并得到该矩阵的正则相关因子,根据虚警概率选定相关因子门限,超过门限的相关因子个数即为信源数。仿真结果表明:该方法在降低运算量、提高实时性的同时,避免了噪声统计特性假设失配带来的判决失效问题,具有较强的环境适应性。

Abstract:

Aiming at the problem of fast estimation of array radar signal source number.a method based on canonical correlation matrix is proposed, The receiver channels of arrayradar are divided into two separated secondary subarrays. The canonical correlation matrix isconstructed by using the received signals of the two separated subarrays, and the correlationfactors are obtained, The signal source number is equal to the number of correlation factorexceeding the threshold. The threshold can be obtained according to the false alarmprobability. The results show that the mothed improves the real-time performance, andreduces the amount of computation, The environmenta adaptability is improved by avoidingthe judgment failure due to the hypothesis mismatch of noise statistical characteristics.