Earth centered inertial vehicle velocity
local horizontal frame. This frame has the Z axis aligned with the
anti-radial direction and the X axis constrained toward the
inertial velocity direction. This frame is not restricted to Earth
oriented vehicles despite its name.
| Name |
Dimension |
Type |
Description |
| Time |
DateFormat |
Real Number |
Time. |
| Azimuth |
LongitudeUnit |
Real Number |
The angle measured to the projection of the vector
into the X-Y plane from +X in a right handed sense about +Z. The +X
direction has an azimuth of zero and +Y has an azimuth of 90
degrees. |
| Elevation |
AngleUnit |
Real Number |
The angle from the X-Y plane to the vector,
measured positive in the -Z direction. Values range from -90
degrees at the nadir to +90 degrees at the zenith. |
| Range |
DistanceUnit |
Real Number |
The magnitude of the vector. |
| To Nadir Angle |
AngleUnit |
Real Number |
Angle between the apparent sun direction and the
nadir direction where nadir is defined as the direction to the
center of the central body. |