Method and apparatus for compressed sensing with joint sparsity

A method of processing a plurality of snapshots, the method comprising:

• receiving the plurality of snapshots;
• generating first subset of an estimate of the support of a signal matrix according to a compressed sensing-multiple measurement vector (CS-MMV) scheme using the plurality of snapshots;
• and
• generating second subset of an estimate of the support of a signal matrix according to a subspace based scheme using the plurality of snapshots and the first subset.

A method of processing a plurality of snapshots of jointly sparse signals, the method comprising:

• receiving the plurality of snapshots;
• generating first matrix comprising the plurality of snapshots;
• generating first subset of an estimate of the joint support of the jointly sparse signals according to a compressed sensing-multiple measurement vector (CS-MMV) scheme, the CS-MMV scheme using the first matrix, wherein the cardinality of the first subset is determined based on the difference between the estimated number of targets and the rank of the first matrix;
• and
• generating second subset of an estimate of the support of the jointly sparse signals based on the first matrix and the first subset.