thoughts on A-GPS offline
Timo Juhani Lindfors
timo.lindfors at iki.fi
Fri Feb 20 12:11:55 CET 2009
Helge Hafting <helge.hafting at hist.no> writes:
> As far as I know - we do know the format. The SHR distribution
Yes frameworkd ogpsd has some info about it:
# Feed GPS with position and time
self.send("AID-INI", 48, {"X" : pos.get("x", 0) , "Y" : pos.get("y", 0) , "Z" : pos.get("z", 0), \
"POSACC" : pacc, "TM_CFG" : 0 , "WN" : wn , "TOW" : tow , "TOW_NS" : 0 , \
"TACC_MS" : tacc , "TACC_NS" : 0 , "CLKD" : 0 , "CLKDACC" : 0 , "FLAGS" : flags })
# Feed gps with almanac
if self.aidingData.get( "almanac", None ):
for k, a in self.aidingData["almanac"].iteritems():
logger.debug("Loaded almanac for SV %d" % a["SVID"])
self.send("AID-ALM", 40, a);
Good to know that the hope is not lost! :-)
> It is already possible to set up a free server for almanac data, as
> saving and loading almanac data works well and speed up TTFF some.
But where do we get this almanac data? Can we redistribute what
u-box.com sends us?
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