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Spirent KB Article
Doc ID: FAQ16075
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Positioning Application: Why do I get the same vehicle position when using BeiDou Geodetic and GPS Geodetic Reference
Environment/Versions
Positioning Application
Using same scenario but switching Geodetic Reference between GPS and BeiDou
Answer
The China Geodetic Co-Ordinate System 2000 (CGCS2000) is identical to GPS WGS-84 except for 3 parameters
Geocentric gravitational constant
Flattening (the net difference with respect to WGS-84 is very small and PosApp uses WGS-84 flattening regardless of the Geodetic Reference selected)
Rate of Earth rotation - this will impact the perceived position with respect to the earth position
None of the above affect the actual ECEF position of the vehicle
Version
1.0
Publish Date
2014-10-21
Categories
Product : PosApp,GPS,BeiDou
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