Improved Reconstruction Algorithm Based on Subspace Pursuit

Subspace Pursuit is one of the hot research topic.To achieve a better performance,developed a look ahead strategy that adaptively chooses the best number of coefficients.Subspace Pursuit algorithm use a support-set expansion by a fixed number of coefficients,leading to restricted performance.experimental results show that the new algorithm which can be call adaptively look ahead subspace pursuit performs better than other greedy pursuits algorithms.