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:
Oct. 30, 2012
Filed:
Oct. 30, 2009
Applicants:
Stephen F. Smith, Loudon, TN (US);
James A. Moore, Powell, TN (US);
Inventors:
Stephen F. Smith, Loudon, TN (US);
James A. Moore, Powell, TN (US);
Assignee:
UT-Battelle, LLC, Oak Ridge, TN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01S 3/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
Methods and apparatus are described for a navigation system. A process includes providing a plurality of transmitters distributed throughout a desired coverage area; locking the plurality of transmitters to a common timing reference; transmitting a signal from each of the plurality of transmitters. An apparatus includes a plurality of transmitters distributed throughout a desired coverage area; wherein each of the plurality of transmitters comprises a packet generator; and wherein the plurality of transmitters are locked to a common timing reference.