[Retracted] High-Resolution Direction of Arrival Estimation of Underwater Multitargets Using Swarming Intelligence of Flower Pollination Heuristics

Table 1

Estimation accuracy for two sources.

SNR = 5 dB, snapshots = 20, hydrophones = 8, d = /2
Algorithms		FPA	ESPRIT	RMUSIC	MUSIC	MVDR	PSO
= 30	Mean	30.005	29.680	26.125	31.980	32.036	33.549
	Variance	0.0162	5.490	347.70	1.932	0.869	33.549
= 35	Mean	34.953	35.693	35.246	32.993	33.036	278.68
	Variance	0.008	12.373	33.661	1.960	0.869	476.42