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:
Aug. 16, 2005
Filed:
Aug. 26, 2003
Richard Fowell, Rolling Hills Estates, CA (US);
Richard Fowell, Rolling Hills Estates, CA (US);
The Boeing Company, Seattle, WA (US);
Abstract
Methods and structures are provided for reducing pointing errors ζ of satellite antennas and for generating broad field-of-view satellite attitude acquisition patterns. In one method embodiment, satellite transmit beams have estimated pointing attitudes β and are transmitted to overlap on a ground-based receiving terminal which has a known terminal location λ and which measures received signal strengths α. Pointing errors ζ of the transmit beams are then determined from the estimated pointing attitudes β, the terminal location λ and the signal strengths α and the pointing errors ζ are subsequently reduced by revising the pointing attitudes β. Other method embodiments utilize known signal-strength functions and antenna signals with known signal parameters such as frequencies and/or modulations.