|Convert from ED50 to WGS84 positions||Solan||08.12.09 05:28|
I need to convert ED50 positions to WGS84. Has anyone written a matlab
|Re: Convert from ED50 to WGS84 positions||Rune Allnor||08.12.09 05:39|
I wouldn't be surprised if the mapping toolbox
|Re: Convert from ED50 to WGS84 positions||Rob Comer||12.12.09 15:33|
Rune Allnor <all...@tele.ntnu.no> wrote in message <firstname.lastname@example.org>...
There is no Mapping Toolbox function to do the transformation in a single step, but the toolbox can help. The basic procedure is to:
1. Use the geodetic2ecef function with the ED50 reference ellipsoid to convert from ED50 latitude, longitude, and elllipsoidal height to X, Y, and Z in the corresponding earth-centered, earth-fixed geocentric system.
2. Apply a Helmert ("seven-parameter") transformation to transform X, Y, and Z to a WGS84 geocentric system. This is easy to code, but you'll need to look up a set of parameters somewhere (or fit them yourself if you have appropriate truth data).
3. Use the ecef2geodetic function with the WGS84 reference ellipsoid to convert from WGS84 X, Y, Z to WGS84 latitude, longitude, and ellipsoidal height.