Method and apparatus for satellite-based relative positioning of moving platforms
First Claim
1. A method for providing information for calculating a baseline between a moving base station and a moving rover station, the method comprising:
- collecting navigation-domain information indicating current position of the base station at navigation-domain times; and
collecting observation-domain information indicating current position of the base station at observation-domain times wherein the observation-domain times are less frequent than the navigation domain times.
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Abstract
The present invention is directed to the determination of a relative position between moving platforms, using satellite-based navigation techniques and equipment installed on said platforms. It combines the concepts of observation-space and navigation-space differential systems, and operates a DGNSS base station in a time-varying mode, in order to rely on the built-in differential positioning and navigation capabilities of particular GNSS receivers while minimizing datalink loading and computational load in auxiliary processors. The invention achieves accurate relative positioning and navigation with respect to a moving base station, using DGNSS equipment that assumes it is stationary when operated in a reference station mode.
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Citations
18 Claims
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1. A method for providing information for calculating a baseline between a moving base station and a moving rover station, the method comprising:
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collecting navigation-domain information indicating current position of the base station at navigation-domain times; and
collecting observation-domain information indicating current position of the base station at observation-domain times wherein the observation-domain times are less frequent than the navigation domain times. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for calculating relative position between a moving base station and a moving rover station, the method comprising:
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receiving navigation-domain information indicating current position of the base station at navigation-domain times;
receiving observation-domain information indicating current position of the base station at observation-domain times;
when observation-domain information is received, calculating a relative position of based on the received observation-domain information; and
when navigation-domain information is received, calculating a relative position of based on a previously calculated relative position and the received navigation-domain information wherein the observation-domain times are less frequent than the navigation domain times. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification