Re: modulating time markers

Hul Tytus <ht@panix.com> writes:

   Anyone know of a text that deals with such circuitry or perhaps a
schematic of a gps reciever with enough detail to show how it's done?

GPS is extremely complicated and studying it is probably not worth your
while if you're only trying to modulate a time signal onto an RF
carrier.  For that, look at basic RF digital modulation techniques.  Are
you trying to get microsecond accuracy?  Sub-millisecond?  Sub-second?
It gets easier at coarser levels.  You stop having to account for speed
of light delay between the transmitter and receiver, relativistic
corrections because of the endpoints being in motion, etc.