一种求解信号DOA的方法。该方法首先将DOA的估计转化为MMV问题，然后采用联合稀疏约束将其转化为带稀疏约束问题的求解。-A method of solving signal DOA. Firstly, the DOA estimates into MMV problem then will be transformed into the solving of the problems with sparse constraint joint sparse constraints.