Two-Dimensional Multiple-Snapshot Grid-Free Compressive Beamforming Using Alternating Direction Method of Multipliers

Table 1

DOA estimation error corresponding to Figure 5 and consuming time of IPM based SDPT3 solver and ADMM based algorithm.

Approach to solve equation (4)	× 100%			Consuming time
	2000 Hz	3000 Hz	4000 Hz	2000 Hz	3000 Hz	4000 Hz
IPM based SDPT3 solver	1.93%	1.51%	0.88%	5.90 s	5.70 s	6.20 s
ADMM based algorithm	2.39%	1.22%	0.84%	1.01 s	0.90 s	1.00 s