A Modifying Sub-threshold Weak Conjugate Gradient Pursuit Method

摘要

A modifying Sub-threshold Weak Conjugate Gradient Pursuit Method is proposed to improve recovery accuracy of Compressed Sensing. This method adds a direction in the Directional Pursuit Method and uses a stopping criterion for the indices of elements, then the evaluation of sparse signal is obtained by using Least Square Method. The simulation shows that for the same sparsity level, the number of measurements needed by the method is less than that needed by MP or StOMP-FDR to exactly recover, and the recovery accuracy is higher.