Receivers for navigation satellite systems
CA 1210118 A · Owner: Qinetiq Limited · Inventors: Kilvington, John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
IMPROVEMENTS IN OR RELATING TO RECEIVERS FOR NAVIGATION SATELLITE SYSTEMS, (See Figure 1 of the drawings) The present invention provides a receiver for a navigation satellite system such as NAVSTAR, which includes an antenna (1) for receiving an incoming coded, time-based spread spectrum, signal which includes navigational data from a plurality P, of satellites, means (23) for deriving baseband I and Q components of each of the signals, means (10,11) for digitising the I and Q components, a Fast Fourier Transform (FFT) processor (13) for transforming the digitised I and Q components and their respective codes, and means (15a to 15d) arranged to multiply together the transformed components …
Read the whole patent
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
- Granted August 19, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 19, 2003.
- 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.