Well, I was really thinking of GPS locked PSK rather than any incoherent
mode. WIthout the need for clock and frame timing recovery we could scrape
every possible advantage for coherent signalling. With such superb accuarcy
of timing even without carrier recovery, it seems a pity to throw all the
advantages away by using on-off keyed power detection.
I did some basic tests last year with GPS locked 1 B/s PSK and with a very
simple decoder managed to receive down to frighteningly low signal levels.
Andy G4JNT
-----Original Message-----
From: [email protected]
[mailto:[email protected]]
Sent: 2004 February 10 12:12
To: [email protected]
Subject: RE: LF: Timing GPS
Are you talking about something like coherent CW, Andy ?
73 de Jean-Louis F6AGR
-----Message d'origine-----
De : Talbot Andrew [mailto:[email protected]]
Judging by the lack of replies to this thread - there seems
little interest
here. A very great pity, as accurate GPS locked timing is
the next great
improvement we could make to LF signalling.
"This e-mail is intended for the recipient only. If you are not the
intended recipient you must not use, disclose, distribute, copy, print,
or rely upon this e-mail. If an addressing or transmission error has
misdirected this e-mail, please notify the author by replying to this e-mail."
"Recipients should note that all e-mail traffic on MOD systems is
subject to monitoring and auditing."
| 