中文说明：
该文提出了一种分段弱阈值修正共轭梯度追踪算法，该算法修正了方向追踪算法的方向，提高了压缩感知的重构精度。
English Description：
In this paper, a piecewise weak threshold modified conjugate gradient tracking algorithm is proposed, which modifies the direction of the direction tracking algorithm and improves the reconstruction accuracy of compressed sensing