雷达SAR成像中的压缩感知信号恢复算法，OMP在每次迭代过程中选择出的原子并不是最优的。论文分析了改进的最优OMP算法，即CSOMP，可以使算法收敛更快，减少算法硬件实现的复杂度。-In radar SAR imaging, the compressed sensing signal recovery algorithm, OMP in each iteration process is not the optimal choice of the atomic. This paper analyzes the improved optimal OMP algorithm, namely CSOMP, which can make the algorithm converge faster and reduce the complexity of hardware implementation.