Boots – shoes – and leggings
Patent
1992-12-01
1994-10-25
Black, Thomas G.
Boots, shoes, and leggings
340988, 342357, G01S 502, H04B 7185
Patent
active
053595211
ABSTRACT:
An apparatus and method for determining the position of a vehicle relative to the center of the Earth uses navigation signals from a satellite based navigation system which includes a plurality of satellites orbiting the Earth. In one embodiment, a plurality of antennas are mounted on the vehicle. The distance between the antennas is precisely known. This distance is used to constrain the solution of a vehicle position estimate to improve the accuracy of the position estimate. In another embodiment, a plurality of receiver systems are used in place of the plurality of antennas. In yet another embodiment, a plurality of base stations with known positions are used to constrain the solution of the vehicle position estimate.
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Friedrich Douglas W.
Gudat Adam J.
Kyrtsos Christos T.
Black Thomas G.
Caterpillar Inc.
Nguyen Tan Q.
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