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:
Jul. 28, 2015
Filed:
Feb. 14, 2013
Venkata A. Sishtla, Marion, IA (US);
Mark B. Godfrey, Melbourne, FL (US);
James H. Doty, Cedar Rapids, IA (US);
Keith L. Kerley, Satellite Beach, FL (US);
Venkata A. Sishtla, Marion, IA (US);
Mark B. Godfrey, Melbourne, FL (US);
James H. Doty, Cedar Rapids, IA (US);
Keith L. Kerley, Satellite Beach, FL (US);
Rockwell Collins, Inc., Cedar Rapids, IA (US);
Abstract
A method of determining the ground speed or drift angle of an aircraft is described. It is determined whether or not a weather threshold has been met based on returns of a radar beam which is pulse compressed in a first scan. If the weather threshold is determined to have not been met, a ground speed or drift angle of the aircraft is determined based on Doppler processing of radar beam returns of a radar beam in a second scan. If the weather threshold has been met, a bottom radar beam is directed lower to the ground, and a ground speed or drift angle of the aircraft is determined based on Doppler processing returns of the bottom radar beam directed lower to the ground. A corresponding radar system is also described.