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. 25, 2001
Filed:
Nov. 15, 1994
Michael L. Wells, Newhall, CA (US);
Thomas E. Jenkins, Los Angeles, CA (US);
Richard J. Sand, Torrance, CA (US);
Eric B. Sutton, Los Angeles, CA (US);
Raytheon Company, Lexington, MA (US);
Abstract
A coordinate transformation apparatus (,) in an aircraft-based missile guidance and tracking system for adjusting aircraft and missile position signals for a roll angle about the line of sight in the guidance and tracking system sight unit (,) caused by roll of the aircraft subsequent to firing of the missile. The apparatus (,) incorporates analog to digital converter means (,), (,), (,), (,) and (,) to convert the analog aircraft and missile position signals to digital signals for input into a microprocessor (,). The microprocessor (,) computes the roll angle as well as a change in roll angle over time around the line of sight of the sight unit (,) and subsequently adjusts the digital signals to compensate for the computed roll angle and change in roll angle. Digital to analog converter means (,), (,) and (,) convert adjusted digital signals to analog signals and output the adjusted analog signals for computation of missile guidance signals by the system.