Coordinate Frame Conversion from ECI to ECEF

Discussion in 'GPS Technical Discussion' started by Ashle, Aug 2, 2017.

  1. Ashle


    Jul 13, 2017
    Likes Received:
    Hello Everyone ,
    I am trying to understand the coordinate transformations ,i.e ECI to ECEF , ECEF to Navigation Frame.... And trying to understand how rotation matrix is built. I am confused in this part... many resources over online which i go through directly give what they means and their corresponding rotation matrix which is hard to understand for me.

    Can anyone please a good resource on this building rotation matrix ?

    My question is for transformation between ECI and ECEF which is fairly simple...
    It says that , ECI and ECEF have same origins and Z Axes (which is true) , so only Rotation in Z-axis is needed...

    What is this means???

    Can anyone help me out please ?
    Ashle, Aug 2, 2017
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