AbstmcI-"be location of mobile terminals in cellular networks is an important problem with aPPlifations in resoume allocation, lofation sensitive browsing, and emergency communications. A hey problem in mobile terminal location is the of sight (~0 s ) propagation, measurement quantization, and measurement noise and also bas a reasanable implementation cost. This paper pro. propagation [Z], [3]. These algorithms are based on the use of non-parametric estimation techniques using survey data taken from the propagation environment.