| 摘要 |
<p>Method and means for enhancing the position accuracy of a civil GPS receiver (21) by compensating for errors in its position solution with data derived from a military GPS receiver (12), wherein the civil GPS receiver may be disposed in a mobile expendable vehicle (20) and the military receiver in a mobile launch vehicle (10). The compensating data is obtained by a comparison of the pseudorange measurements of the military GPS set and another civil GPS set disposed with it in the launch vehicle and attached to the same antenna. Two embodiments are disclosed: 1) an On-the-Fly Relative Navigation technique, applicable when the expendable receiver (20) tracks the same satellites as the military and civil sets are tracking, and 2) an On-the-Fly Differential Navigation system, used when the expendable receiver (20) is not tracking the same satellites as the launch sets.</p> |
