Study on the Method for Estimating the Number of Arrayed Signal Sources

Estimating the number of sources in Array Signals processing is a very important problem of the Spatial Spectrum Estimation. Predicted Eigen-Threshold Approach forecasts the Upper limit of noise eigenvalue of Array Signals Covariance Matrix. Come to decide the signal source number according to the size of forecast value.And this algorithm does not need artificial setting up to check a threshold. This paper sets off from theory first,Infer the Predicted Eigen-Threshold Approach; Then be in progress with homoge-neous linearity antenna array simulating,Carry out a checkout on algorithmic correctness.