Solar Position Model for use in DIORAMA
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
The DIORAMA code requires the solar position relative to earth in order to compute GPS satellite orientation. The present document describes two functions that compute the unit vector from either the center of the Earth to the Sun or from any observer’s position to the Sun at some specified time. Another function determines if a satellite lies within the Earth’s shadow umbra. Similarly, functions determine the position of the moon and whether a satellite lies within the Moon’s shadow umbra.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE; USDOD
- DOE Contract Number:
- AC52-06NA25396
- OSTI ID:
- 1239902
- Report Number(s):
- LA-UR-16-21285
- Country of Publication:
- United States
- Language:
- English
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