Definition in file psEarthOrientation.h.
#include "psCoord.h"
#include "psTime.h"
#include "psSphereOps.h"
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Data Structures | |
| struct | psEarthPole |
| Structure for respresenting the Earth's pole at any moment or determine velocity at the pole. More... | |
Enumerations | |
| enum | psPrecessMethod { PS_PRECESS_ROUGH, PS_PRECESS_COMPLETE_A, PS_PRECESS_COMPLETE_B, PS_PRECESS_IAU2000A } |
| Method for spherical precession used to specify the level of detail used in calculation. More... | |
Functions | |
| bool | p_psEOCInit (void) |
| Initialize EOC. | |
| bool | p_psEOCFinalize (void) |
| Finalize EOC after using functions that make calls to eocInit for time table data. | |
| psEarthPole * | psEarthPoleAlloc (void) |
| Allocates a new psEarthPole structure. | |
| psSphere * | psAberration (psSphere *apparent, const psSphere *actual, const psSphere *direction, double speed) |
| Calculates the apparent position of a star, given its actual position and the velocity vector of the observer. | |
| psSphere * | psGravityDeflection (psSphere *apparent, psSphere *actual, psSphere *sun) |
| Calculates the apparent position of a star, given its actual position and the position of the sun. | |
| psEarthPole * | psEOC_PrecessionModel (const psTime *time) |
| Calculates the components of the rotation between the CEO and GCRS frames, X, Y, and s, using the IAU2000A precession & nutation model. | |
| psEarthPole * | psEOC_PrecessionCorr (const psTime *time, psTimeBulletin bulletin) |
| Provides interpolated corrections to the X and Y components of the polar coordinates from the tables provided by the IERS, just as it does for UT1 and polar motion. | |
| psSphereRot * | psSphereRot_CEOtoGCRS (const psEarthPole *pole) |
| Constructs the spherical rotation for transforming from CEO to GCRS coordinates. | |
| psSphereRot * | psSphereRot_TEOtoCEO (const psTime *time, psEarthPole *tidalCorr) |
| Calculates the rotation of the Earth about the CIP. | |
| psEarthPole * | psEOC_GetPolarMotion (const psTime *time, psTimeBulletin bulletin) |
| Provides interpolated values of the polar motion components extracted from the IERS tables. | |
| psEarthPole * | psEOC_PolarTideCorr (const psTime *time) |
| Provides tidal corrections to the polar motion components using the Ray model of Simon et al. | |
| psEarthPole * | psEOC_NutationCorr (psTime *time) |
| Provides the additional corrections due to nutation terms with periods less than or equal to two days, as well as the correction to the s-prime component of polar motion. | |
| psSphereRot * | psSphereRot_ITRStoTEO (const psEarthPole *motion) |
| Converts the polar motion corrections to a spherical rotation. | |
| psSphereRot * | psSpherePrecess (const psTime *fromTime, const psTime *toTime, psPrecessMethod mode) |
| Generates the complete spherical rotation to account for precession between two times. | |
1.5.1