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:
Jan. 14, 2003
Filed:
Oct. 05, 2000
Applicant:
Inventors:
Steven C. Johnson, Issaquah, WA (US);
Glen A. Burlingame, Redmond, WA (US);
Assignee:
Honeywell International Inc., Morristown, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G08B 2/300 ;
U.S. Cl.
CPC ...
G08B 2/300 ;
Abstract
In a ground proximity warning system for an aircraft, a signal representing clearance of the aircraft from the underlying terrain is produced from a sea level related altitude signal and a terrain database in addition to the radio altitude signal of the aircraft's radio altimeter. An indication of reasonableness of the aircraft radio altitude signal is formed jointly responsive to the aircraft radio altitude signal and the terrain clearance signal.