Performance Simulation and Analysis of DOA Estimation Based on Non-uniform Vector Array
Xiong Jijun · Jisuanji fangzhen · 2011
Most traditional direction of arrival(DOA) estimate algorithms are applicable for uniform linear scalar sensor array,but they are restricted for non-uniform or anomalistic array because of asymmetry quality of space structure,so they can not meet the actual demand.To solve the DOA estimation in non-uniform vector sensor array,the time delay expression of four non-uniform vector sensor array is put forward,the array direction vector is given,the MUSIC algorithm flow chart in non-uniform vector array for DOA estimate is proposed,the better performance of each array element setting method is selected,and the probability of success and the mean square error by SNR and snapshots are calculated.The simulating experiment shows that the performance of non-uniform line array is best,and it has better performance of DOA estimation in low SNR and few snapshots.