Thread: Theory about why GPS performs poorly
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lardman is offline lardman
2008-02-07 , 12:22
Posts: 2,102 | Thanked: 1,309 times | Joined on Sep 2006
#98
Also, one good test to see if B 1 is indeed the almanac is to see whether the data changes significantly over time. Almanac data should be fairly static (it is valid for 180 days).
Indeed, but it is presumably updated during this period to make it more accurate; therefore the almanac data may well change (slightly) from day to day. Does this sound reasonable? Any way of establishing whether this is true?