Jj. Smith et al., THE CRAMER-RAO LOWER-BOUND FOR TOWED ARRAY SHAPE ESTIMATION WITH A SINGLE-SOURCE, IEEE transactions on signal processing, 44(4), 1996, pp. 1033-1036
This correspondence derives the Cramer-Rao lower bound (CRLB) for towe
d array shape estimation when using the receiver outputs in the presen
ce of a single planewave narrowband source and additive white noise. B
oth known and unknown source directions are considered. The CRLB shows
that accurate array shape estimation is possible only if the array sh
ape is relatively linear and the source direction away from endfire.