Method for the high accuracy geolocation of outdoor mobile emitters of cdma cellular systems
CA 2497363 C · Owner: Brousseau, Nicole · Inventors: Wight, James S.; Colman, Geoffrey; Brousseau, Nicole
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A high-accuracy method for the geolocation without the collaboration of the network of outdoor mobile emitters of a CDMA cellular system based on the ability to distinguishing between line-of sight and reflected signals. The method employs time-of flight and angle-of arrival information in order to determine whether a signal received by each of two or more interceptors situated at different locations is line-of-sight or reflected. Time-of flight information is obtained with the aid of the reverse link of a mobile of interest. At those instances in time when the signal received at two or more interceptors is line-of sight the location of the mobile can be accurately determined using …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed February 17, 2005 and granted July 2, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 17, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.