线性接收阵列下LFM信号的检测与参数估计方法

针对微弱信号较难在通信侦察中检测和估计的问题，提出了基于线性阵列的信号检测和参数估计方法．该方法首先利用基于傅里叶快速算法的循环自相关方法实现了每一个阵元的能量积累，然后，对每一阵元循环自相关结果采用用非相干积累方法实现了信号的检测和参数估计．该方法计算复杂度低，实现简单，低信噪比下可有效实现信号的参数估计与检测．仿真实验证明了该方法的有效性．

Detection of LFM Signals and Its Parameter Estimation Under Linear Receiver Arrays

In view of the problem that the detection and estimation of weak signals is more difficult in signaleconnaissance, this paper brings forward a method for signal detection and its parameter estimation based on linear arrays, where the energy accumulation of each array element is realized by means of cyclic self-correlation based on fast-Fourier-transform algorithm, and the signal detection and its parameter estimation are implemented for the cyclic auto-correlation results of each array element, by using the method of non-coherent accumulation. Simulation experiments prove this proposed method to be of effectiveness, low complexity of computation, easy implementation and effectively implementing the signal detection and its parameter estimation.