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:
Dec. 30, 2003
Filed:
Feb. 05, 2002
Davorin David Hrovat, Ann Arbor, MI (US);
Hongtei Eric Tseng, Canton, MI (US);
John Loring Yester, Bloomfield Hills, MI (US);
Ford Motor Company, Dearborn, MI (US);
Abstract
An apparatus and method for measuring dynamic movement of a vehicle ( ) by employing multiple GPS satellites and determining velocity based change in the carrier frequency of multiple satellite signals. The apparatus includes at least two GPS receiving antennas ( and ) installed on a vehicle ( ) at known locations and a controller ( ) for processing received GPS signals ( ) and monitoring a carrier frequency associated with the GPS signals. The controller ( ) determines a change in the carrier frequency of the GPS signals due to Doppler effect. The controller ( ) further determines a first inertial velocity vector of each of the receiving antennas ( and ) based on the change in carrier frequency, and determines angular rate of the vehicle based on the inertial velocity vectors. The controller ( ) further determines vehicle longitudinal and lateral velocity and acceleration as a function of the inertial velocity vectors.