There are is a list on a ballooner website with GPS devices working
beyond export rules.
- Henry
--
ehydra.dyndns.info
Magnus Danielson schrieb:
First thing to consider is that standard GPSes will not meet your needs,
since they have to obey the height and speed limits for export rules.
The side-effect is that doppler frequencies may be much higher and both
tracking and acquisition needs to include these more extremer doppler
frequencies.
Use of PTP within a rocket or spacecraft may or may not be a good thing.
NMEA + PPS may suffice and be less power-hungry. IRIG may also be an
option.
If timing and frequency needs strict correlation with ground, relativity
comes into play due to altitude alone shifts frequency.
Cheers,
Magnus
_______________________________________________
time-nuts mailing list -- [email protected]
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
