On Calibration and Direction Finding with Uniform Circular Arrays

Table 1

Considered narrowband DF techniques, the number of identifiable sources, and the considered structure of the steering vectors.

DF Methods	Reference	No. sources	Steering vector
CML	[7, 8]		arbitrary
UML	[7, 8]		arbitrary
MUSIC-1	[9]		arbitrary
root-MUSIC	[10]		Vandermonde
MUSIC-2	[11]		arbitrary
ESPRIT	[12]		Vandermonde
MODE	[8, 13]		arbitrary
IQML	[14]		Vandermonde
Capon-1	[15]		arbitrary
Bartlett	[15]		arbitrary
root-Capon	This work		Vandermonde
Capon-2	This work		arbitrary