Method of and apparatus for message communication on loran-c navigational signal broadcasts and the like with reduced navigation errors and with reduced skywave navigation location errors
CA 1320255 C · Owner: Megapulse Incorporated · Inventors: Enge, Per
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A Loran-C communications technique and system are disclosed involving appropriate encoding of communication messages and logical multiplication and inversion of encoded signals prior to phase modulation of the Loran-C pulses with, novel bit-flip connections for producing complementary plus and minus modulation position shifts in the first and third and second and fourth, etc. of the Loran-C pulse groups and, with perfect balance irrespective of the nature of the raw data and irrespective of skywave interference. The invention also embraces a method of obviating errors in navigation locking caused by sampling reception at the conventional symmetrical pulse modulation time intervals in …
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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
- Granted July 13, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 13, 2010.
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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.