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How Can A Weak Constellation Improve Your Position?
Maybe I am too strong on Geometry, but how can a weak “other constellation” position improve your GNSS position?
Assume you have 10 GPS and 8 Glonass, what good are 3 Compass and 3 Gallileo satellites in improving your precision? Even with 4 each you are looking at PDOPS in the 5-7 range
Not having full GNSS software, how is the position of various constellations weighted in a final GNSS solution?
How precise are other constellation broadcast orbits and how precise are their related ephemeris? How timely are their post observation ephemeris?
I can imagine that the other satellites are in favorable positions, but imprecise ephemeris could give a mathematically tight solution that is in fact not accurate.
Paul in PA
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