CHC i83 User Manual 54
However, if you look at a station’s Time Series and it looks like this:
You will want to ALWAYS exclude the station from your solutions. If you catch this site on a bad day (and it has a lot of
them) you can expect significant elevation and horizontal errors.
Even worse sites abound in the NGS array:
These stations and all the others like them are unsuitable for any processing use. It is your responsibility to exclude
them from your solutions.
#8 GPS Suitable Locations
The NGS recommends that you send GPS occupations collected in
GPS suitable locations
. However, little NGS guidance
is provided for what is ‘GPS suitable’ in the context of OPUS submissions. Let’s compare good and bad locations.
Best Case Scenario
The best possible site would have a clear view of the sky above 10° at all azimuths where there is a possibility of a GPS
satellite being in the sky:
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