一种时空联合幅相拟合的阵列处理方法

A Temporal-Spatial Amplitude and Phase Fitting Technique for Array Processing

本文从近似最大似然拟合的角度,提出了一种时域、空域联合优化的阵列处理方法。因同时在时空域拟合信号的幅度和相位,该方法避免了传统阵列处理技术先在时/频域提取信号幅度和相位存在误差而导致后续阵列处理性能下降的问题。仿真分析表明,本文方法在精确估计接收信号幅相参数的同时,还可对同时多信号进行准确的入射方向估计,具有比传统时、空域信息分别处理方法更优越的测向性能。

An optimal temporal and spatial technique for array processing is presented in the sense of approximate maximum likelihood.Because of the simultaneous time-space processing,the performance degradation is avoided in the presented technique compared to the traditional array processing methods,which depend on an inaccurate estimation of signal amplitude and phase in time and/or frequency domain.Numerical studies are also reported of the efficiency of the presented technique for the problem of estimating the amplitude,phase and directions of simultaneously arriving signals.