Computer and Modernization ›› 2022, Vol. 0 ›› Issue (03): 111-115.

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Sparse Signal Reconstruction of Backtracking Generalized Orthogonal Matching Pursuit Algorithm Based on Secondary Screening

  

  1. (School of Science, Chang’an University, Xi’an 710064, China)
  • Online:2022-04-29 Published:2022-04-29

Abstract: Compressed sensing is a new theory of signal sampling and reconstruction. Efficient signal reconstruction algorithm is the pivot of compressed sensing from theory to practical application. To reconstruct the original sparse signal more accurately,a backtracking generalized orthogonal matching pursuit algorithm based on secondary screening is proposed. Firstly, a large number of related atoms are selected to improve their utilization rate by using inner product matching criterion. Secondly, the generalized Jaccard coefficient criterion is used for the selected atoms to obtain the most matched atoms and optimize the atom selection method. The experimental results show that when the signal is reconstructed under different sparseness and observed values, the proposed algorithm has greater advantages in terms of reconstruction error and  success rate compared with backtracking generalized orthogonal matching pursuit algorithm, orthogonal matching pursuit algorithm and subspace pursuit algorithm.

Key words: compressed sensing, backtracking generalized orthogonal matching pursuit algorithm, secondary screening, generalized Jaccard coefficient