The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 25, 2001
Filed:
Aug. 18, 1999
Stephen M. Lichten, Pasadena, CA (US);
Yoaz Bar-Sever, Altadena, CA (US);
James Zumberge, San Marino, CA (US);
William I. Bertiger, Altadena, CA (US);
Ronald J. Muellerschoen, Pasadena, CA (US);
Sien-Chong Wu, Torrance, CA (US);
Kenneth Hurst, Lebec, CA (US);
Geoff Blewitt, Durham, GB;
Thomas Yunck, Pasadena, CA (US);
Catherine Thornton, Arcadia, CA (US);
Michael Heflin, La Cresenta, CA (US);
California Institute of Technology, Pasadena, CA (US);
Abstract
Techniques for monitoring and controlling yawing of a GPS satellite in an orbit that has an eclipsing portion out of the sunlight based on the orbital conditions of the GPS satellite. In one embodiment, a constant yaw bias is generated in the attitude control system of the GPS satellite to control the yawing of the GPS satellite when it is in the shadow of the earth.