Source localization using reflection omission in the near-field

Timing equations can be exploited to distinguish between LOS and reflected signals in an RF emitter location system. For this purpose, some algorithms are given. The first algorithm extracts the group of the signals corning from the same source from all the first arrivals at the omni-directional sensors. This algorithm can be generalized for the directive sensors. Then an algorithm is given to distinguish between the transmitter and other located sources (reflectors). Finally a method is introduced to locate the transmitter when there are not enough LOS signals but at least four reflectors of the first type have been located in the first algorithm.