Source localization is investigated based on noisy measurements of TDOA (time-difference of arrival) in which the
measurement noises are assumed to be Gauss distributed. The solution to the constrained WLS (weighted leastsquares)
is derived and applied to the source localization problem based on TDOAs. The proposed algorithm is
shown to be an approximate MLE (maximum likelihood estimation) algorithm under some mild condition. The
simulation results show that the proposed approximate MLE algorithm compares favorably with the existing
solution methods for source localization based on TDOA measurements.
"Approximate MLE algorithm for source localization based on TDOA measurements", Proc. SPIE 6577, Wireless Sensing and Processing II, 657707 (3 May 2007); doi: 10.1117/12.719865; https://doi.org/10.1117/12.719865