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Figure 2. TA1 is the transmission source. RA1, 2, 3, 4, and 5 are all receiving antenna sites. All receiving sites are LOS and receive signals along a direct path. The bearings taken from all the receiving sites except RA2 triangulate at TA1. RA2 receives a relatively strong signal along reflected signal pathway SP2R. The direct signal SP2 and the reflected signal SP2R are summed together at the antenna at RA2. If the bounce signal is weak relative to the direct signal, its influence on the bearing obtained at site RA2 will be minimal. If the signal traveling on signal path SP2R is strong, the bearing may be significantly altered. In general, the agreement of four of the five receiving sites on a triangulated position suggest a true position. (Note: We realize other weak reflected signals may exist at all the receiving sites but have not been shown for the sake of simplicity.) |