A Novel Downward-Looking Linear Array SAR Imaging Method Based on Multiple Measurement Vector Model with -Norm

Algorithm 1

SMV-OMP algorithm.

Input: vector , matrix , threshold ;

Initialization: residue error vector ; support set ; sparse vector , iterative number k=1;

While

   Step 1: Find the new support: ;

   Step 2: Update the support set: ;

   Step 3: Update the sparse vector ;

   Step 4: Update the residue error , ;

Output: sparse vector