DOA Estimation Based on Sparse Signal Recovery Utilizing Double-Threshold Sigmoid Penalty

Table 1

Computation time comparison.

SNR (dB)	Time (seconds)
	L0A	OMP	ISL0	MUSIC
5	0.4404	0.0098	0.6362	0.0104
10	0.3637	0.0099	0.4586	0.0105
15	0.3346	0.0098	0.4303	0.0103