Research of Min-norm Algorithm in AOA Estimation of Smart Antenna
Fenglin Li · Jisuanji fangzhen · 2010
In the key technologies of smart antenna,based on array signal processing,the AOA estimation algorithm plays a critical role in signal source orientation and beamforming,in which the subspace estimation method based on eigendecomposition has been focus.Due to the error and large calculation quantity exist in a generic subspace method when calculating the sample correlation,this paper introduces a method of estimating the multi-plane wave signal's AOA—an algorithm of AOA estimation based on Min-norm and its version.This method constructs restriction condition by using the min-norm technology,and constructs the noise subspace by resolving the noise optimum weight vector,then it searchs the spectrum peak value and estimates arrival of angel.The theory analysis and simulation results show that this method is valid and this algorithm has higher spatial resolution and less calculation quaity.It is practical in actual non-correlation and multi signal measuring.