Method and apparatus using GPS to determine position and attitud

Details Method and apparatus using GPS to determine position and attitud Method and apparatus using GPS to determine position and attitud

1998-09-17

2000-10-03

Nguyen, Tan

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Aeronautical vehicle

701214, 34235702, G05D 100, G06F 700

Patent

active

061285579

ABSTRACT:
Apparatus using a global positioning system (GPS) for finding out the attitude of a rotating space vehicle employs first and second antennae mounted opposite from each other on a circumference of the body of the rotating space vehicle. The antennae receive GPS satellite signals in their channels. A control and tracking loop processor monitors the signal strength in each channel. Phase errors produced by phase discriminators of each channel arc combined to produce a spin signature which is used to calculate the vehicle spin rate and vehicle attitude.

REFERENCES:
patent: 4785463 (1988-11-01), Janc et al.
patent: 5185610 (1993-02-01), Ward et al.
patent: 5808582 (1998-09-01), Woo
Spacecraft Attitude Control Using GPS Carrier Phase, by E. Glenn Lightsey. Published by the American Institute of Aernautics and Astronautics, Inc.; chapter 16, pp. 461-480. 1995 (Month is not available).
Spacecraft Attitude Determination by Kalman Filtering of Global Positioning System Signals by Stephen J. Fujikawa and Darrell F. Zimbelman. Published by the American Institute of Aernoautics and Astronautics, Inc.; pp. 1365-1371. Nov./Dec. 1995.

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