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:
Nov. 01, 2011
Filed:
May. 14, 2003
Peter James Duffett-smith, Cambridge, GB;
Craig Andrew Scott, Cambridge, GB;
Malcolm David Macnaughtan, Sydney, AU;
Guy Albert Graube, Cambridge, GB;
James Paul Brice, Cambridge, GB;
Peter James Duffett-Smith, Cambridge, GB;
Craig Andrew Scott, Cambridge, GB;
Malcolm David MacNaughtan, Sydney, AU;
Guy Albert Graube, Cambridge, GB;
James Paul Brice, Cambridge, GB;
Cambridge Positioning Systems Limited, Cambridge, GB;
Abstract
A method of calculating the position or state of motion of one or more terminals is proposed in which each has a receiver capable of making measurements of signals received from one or more transmission sources for use in calculating the unknown position or state of motion of the or each terminal. At least one transmission source has a known directional transmission pattern, and the bearing from one of the receivers of the or each of the transmission source having a known directional transmission pattern is estimated. Weights are assigned to the measurements made by the one receiver, the weights being calculated from the bearing or bearings and the known directional transmission pattern of the transmission sources.