On 05/01/2011 04:08 PM, Brooke Clarke wrote:
Hi John:
Are you the one to ask about an optional plot?
The GPS satellite orbits are based on sidereal time so that they have
repeating ground tracks.
Not quite. The pattern does not perfectly meat up on orbit-for-orbit if
you plot it on earth.
If the satellite in view plot was in sidereal time then for a fixed
antenna position the plots would not change.
It will shift slightly for every orbit. It takes a year to match up.
Cheers,
Magnus
This might allow a better way of selecting which satellites the receiver
uses.
Have Fun,
Brooke Clarke
http://www.PRC68.com
John Miles wrote:
Yes, Lady Heather has some rather extensive calendar functions
built in, including a list of common (and not so common)
holidays. If the file heather.cal is found, it uses that file
for the holidays... you can add your own or delete some. Otherwise it
uses the built in list. I don't think John's
latest distribution has the .CAL file...
Yep, it's there.
Parenthetically, the TCP test-mule Thunderbolt will be down for a few
days,
in case anyone tries to access it. Should be back up by Thursday night.
-- john, KE5FX
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