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. 14, 1999
Filed:
Jan. 30, 1998
Valentine L Denninger, Sunnyvale, CA (US);
Trimble Navigation Limited, Sunnyvale, CA (US);
Abstract
The present invention comprises a low-observable radar altimeter augmented GPS (global positioning system) aircraft navigation system. The system of the present invention includes a GPS receiver, an attitude sensor, and a low-observable radar altimeter. The GPS receiver receives GPS signals and determines a position therefrom. The attitude sensor is coupled to the GPS receiver. The attitude sensor is adapted to receive GPS signals and determine a three dimensional attitude of the aircraft therefrom. The low-observable radar altimeter is also coupled to the GPS receiver and is coupled to the attitude sensor. The radar altimeter is adapted to measure an AGL (above ground level) altitude of the aircraft. The radar altimeter measures the altitude by employing a low-observable radar transmitter slaved to the attitude sensor. The radar altimeter uses the attitude sensor to maintain a radar beam in a substantially vertical attitude (e.g., parallel to the local gravity vector). The system of the present invention uses the AGL altitude to increase the accuracy of the position.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile