Method and system for determining vehicle position.

摘要

The present invention includes a system (202) for estimating the terrestrial position of a vehicle (200). The system receives electromagnetic signals from a plurality of sources (104,206,208) and responsively producing respective ranges from each of the sources to the vehicle (200) and respective positions of each of the sources. The system projects the position of one of the sources to the opposite side of the Earth and responsively determining a projected position and a projected range. The vehicle's position is determined as a function of the ranges and positions. <IMAGE>