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:
Mar. 30, 2004
Filed:
Apr. 21, 2003
Conrad Rose, King George, VA (US);
Northrop Grumman Corporation, Los Angeles, CA (US);
Abstract
A method of estimating emitter range and heading from bearing measurements without requiring observer heading change or observer acceleration during the bearing measurement collection period. Emitter signal characteristics are measured and a set of parameters characterizing a specific emitter as a signal source are generated based on the measured characteristics. Based on the emitter characterization and an emitter-platform association data base, a most probable platform including the emitter is identified and the emitter operating mode and corresponding specific platform are associated with a particular kinematic regime. A platform performance data base is used to (1) derive a speed value based on the kinematic regime, (2) generate emitter bearings based on the measured emitter characteristics, (3) estimate the emitter speed based on the emitter bearings, and (4) determine the emitter range based on a comparison of the continuous speed value with a discrete speed value derived based on the platform performance data base.