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:
Apr. 17, 2001
Filed:
Dec. 17, 1998
Applicant:
Inventors:
Harold Lewis Longaker, Houston, TX (US);
Leonid Sheynblat, Belmont, CA (US);
Nancy Nelson, San Jose, CA (US);
Assignee:
Trimble Navigation Limited, Sunnyvale, CA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01S 5/02 ; H04B 7/185 ; G06G 7/78 ; H04Q 7/20 ;
U.S. Cl.
CPC ...
G01S 5/02 ; H04B 7/185 ; G06G 7/78 ; H04Q 7/20 ;
Abstract
The present invention is a method and apparatus for establishing a common datum georeferenced position of the phase centers of the antennas used by a system. The system includes a GPS receiver and an auxiliary transmitter. An auxiliary antenna of the auxiliary transmitter is co-located with a GPS antenna of the GPS receiver. The auxiliary antenna is at a known spatial relationship with the GPS antenna. An auxiliary position of the auxiliary antenna is determined based on the known spatial relationship.