| 摘要 |
A first global position signal receiver (GPS receiver), at an undefined location, receives first global position signal data (GPS Data) from global position satellites, in orbit above the earth. The first signal data defines a first location for the first receiver, however, the location defined is inaccurate, with respect to the actual location of the first receiver. A second GPS receiver, spaced from the first GPS receiver, at a second undefined location, receives second GPS Data from the satellites. The second GPS Data defines a second location for the second GPS receiver, the location defined being inaccurate with respect to the actual location of the second receiver. The first GPS Data and the second GPS Data are applied to a computer programmed to combine both signal data mathematically and to calculate the difference between the two GPS Data. The difference between the two data defines a distance and a direction between the first defined location and the second defined location. The derived distance and direction are the distance and direction between the two GPS receivers.
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