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:
Nov. 04, 2008
Filed:
Mar. 30, 2004
Hanching G. Wang, Hacienda Heights, CA (US);
Chih-chien Hsu, Cherry Hill, NJ (US);
Hanching G. Wang, Hacienda Heights, CA (US);
Chih-Chien Hsu, Cherry Hill, NJ (US);
The Boeing Company, Chicago, IL (US);
Abstract
A method, apparatus for reducing errors in a plurality of beacon beams is disclosed. The method comprises the steps of computing quantized channel weights {tilde over (W)}from channel weights Wfor at least some of the channels; estimating the quantization error ΔBfor each of the beacon beams from a difference between the channel weights Wand the computed quantized channel weights {tilde over (W)}; and adding the estimated quantization error ΔBto the beacon beams. Similarly, a beacon biases equivalent to the beacon asymmetry error can be computed by the ground beacon beam forming software and uploaded to the on-board software for error compensation. The apparatus comprises one or more means, such as a processor communicatively coupled to a memory storing instructions for performing these operations.