Wau. Titze et al., PREDICTED PERFORMANCE OF A SYMMETRICAL-PAIR DIRECTION FINDING SYSTEM IN LOW SIGNAL-TO-NOISE ENVIRONMENTS, IEE proceedings. Radar, sonar and navigation, 142(4), 1995, pp. 199-205
The detection probability of an antenna pair of a symmetric-pair direc
tion finding (DF) system in the presence of Gaussian noise is investig
ated. The question of system sensitivity as a function of the signal's
angle of arrival is addressed. Expressions for false-alarm rate and p
robability of detection of a single Symmetric-pair for different width
s of the intermediate zone, a symmetric-pair specific parameter, are d
erived. It is shown that the width of the intermediate zones hardly af
fects the peak sensitivity but has an effect on the probability of det
ection for certain angles of arrival. A technique that yields hardly c
hanging detection probability of the DF system for constant threshold
and varying signal and noise levels is discussed.