Joint Estimation of Frequency and DOA of Signals Based on Nonuniform Sampling
Luo Jing-qing · Electronic Information Warfare Technology · 2011
Considering the character of nonuniform sampling(NUS) with each array,NUS in each array is equivalent to a time-varying virtual nonuniform linear array.This algorithm utilities classical subspace method,such as MUSIC(multiple signal classification),achieves the joint estimation of frequency and DOA of signals by mesh search.According to set reasonable sampled frequency for each array,the method can enhance the angle resolution and estimation accuracy effectively,and avoid the angle-measure ambiguity.Further more the method utilities the mesh search to reduce the computational complexity.Computer simulation results verify the correctness and effectiveness of the proposed the nonuniform sampled method.