Commands
Chapter 5
EuroPak-15a Receiver User Manual Rev 5
57
Figure 4: The WGS84 ECEF Coordinate System
ω
Z WGS 84
BIH - Defined CTP
(1984.0)
Earth's Center
of Mass
Y
WGS 84
BIH-Defined
Zero Meridian
(1984.0)
X
WGS 84
Origin = Earth's center of mass
Z-Axis =
X -Axis =
Y -Axis =
Parallel to the direction of the Conventional Terrestrial Pole (CTP) for
polar motion, as defined by the Bureau International de l'Heure (BIH) on
the basis of the coordinates adopted for the BIH stations.
Intersection of the WGS 84 Reference Meridian Plane and the plane of
the CTP's Equator, the Reference Meridian being parallel to the Zero
Meridian defined by the BIH on the basis of the coordinates adopted for
the BIH stations.
Completes a right-handed, earth-centered, earth-fixed (ECEF)
orthogonal coordinate system, measured in the plane of the CTP
Equator, 90 East of the X -Axis.
*
Analogous to the BIH Defined Conventional Terrestrial System (CTS), or BTS,
1984.0.
- Definitions -
*
