Aiding beam identification in a satellite system
CA 2464369 A1 · Owner: Victor, Edward B. · Inventors: Anderson, Jon James; Ngai, Francis Ming-Meng; Victor, Edward B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system and method for determining timing offset errors in a satellite system based upon Doppler and Doppler rate of change is provided. A user terminal (110, 113) determines first and second timing offsets (902 906) respectively , associated with first and second satellite beams (1142 1204) from respective , first and second satellites (102 104). Next, the user terminal (110, 113) determines the Doppler and Doppler rate of change associated with the first and second satellite beams (1100, 1102). A timing offset is estimated from the measured Doppler and Doppler rate of change and is then compared with the user terminal's own determined timing offset (906). If the comparison does not …
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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 October 23, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 23, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 23, 2024.
- 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
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.