met.h

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/* © 1998 JRM Technologies, Inc.*/



/***********************************
Copyright JRM Enterprises, Inc. 1998
All rights reserved.

This code is the intellectual property of JRM Enterprises, Inc.
It may not be used or released as source or compiled binary form
without the prior written consent of JRM Enterprises, Inc.
***********************************/


#include "sigsimDLLstub.h"


#ifdef __cplusplus
extern "C"
{
#endif


double lunar_albedo(double lambda);

// The below routines synthesize atmospheric and meteorological effects that drive SigSim's signature prediction engine.
//double Met(double tod, long num_bodies, CELESTIAL_TABLE *celestial_table, METIN *metin, int option);
SIGSIM49_API int Met4x(METIN *metin, int air_model_option);

// The below routine is used to synthesize diurnal air temperature in a number of ways.  
double air(double t, double max, double min, double tmax, double tmin, int option);
SIGSIM49_API double Tair_degC(double met_tod, double sunrise, double sunset, double Tamax, double Tamin, int air_model_option);
SIGSIM49_API int FillMetinUserDefinedAirTempArray(METIN *metin, double *tod, double *Ta, int ntod);

double lunar_albedo(double lambda); 
SIGSIM49_API void CalcLongitudinalJRMTIMEs(ellipsoid E, GEODETIC_LOCATION localD, JRMTIME localzone, JRMTIME *local, JRMTIME *UTC, double *local_zone_offset);
void CalcBodyVectorInEarthCenteredFrameAtGeoD(double lat_rad, double dec_rad, double ra_rad, double sa_rad, VECTOR *body);
void SolarEphemerides(JRMTIME ptime, double *dec_rad, double *ra_rad, double *range_km);
void SunriseSunset(double lat_rad, double dec_rad, double lhn, double *sunrise, double *sunset);
SIGSIM49_API double SiderealTime(double lon_rad, JRMTIME ptime);
GEODETIC_LOCATION CalcBodyGeodeticPositionGivenVecInEarthCenteredFrameAtGeoD(ellipsoid E, GEODETIC_LOCATION localD, VECTOR body, double range);
void SolarEphemerisSEU(ellipsoid E, GEODETIC_LOCATION localD, JRMTIME localzone, 
                       VECTOR *sunmax, VECTOR *sunplane, VECTOR *suneast, 
                       double *lhn, double *sunrise, double *sunset,
                       VECTOR *sun, double *az_deg, double *el_deg, 
                  double *raSun, double *decSun, double *rangeSun,
                  double *sunlat_deg, double *sunlon_deg);
void LunarEphemerisSEU(ellipsoid E, GEODETIC_LOCATION localD, JRMTIME localzone, VECTOR *moon,
                  double *raMoon, double *decMoon, double *rangeMoon,
                       double *az_deg, double *el_deg, double *moonlat_deg, double *moonlon_deg);
double MoonElongationFromEphemerides(double raSun, double decSun, double raMoon, double decMoon);
double MoonElongationFromGeodetics(double lonSun, double lonMoon, double latMoon);
double MoonPhaseFromElongation(double elongation, double rangeSun, double rangeMoon);
double MoonIlluminatedFraction(double phase);
void CalcMoonPhaseAndIlluminatedFraction(EPHEMERIS *fm);


VECTOR MoonInMetinSEU(GEOCENTRIC_LOCATION moon, GEOCENTRIC_LOCATION met, ellipsoid E);
SIGSIM49_API GEOCENTRIC_LOCATION GeocentricMoonPosition(double julianDay,  ellipsoid E, double *range_m, double *dec_rad, double *ra_rad);
SIGSIM49_API GEOCENTRIC_LOCATION GeocentricMoonPosition2(double julianDay, ellipsoid E, double *range_m, double *dec_rad, double *ra_rad);
SIGSIM49_API int DoEphemeris(EPHEMERIS *fm);
SIGSIM49_API int DuplicateModtranAtm_DefaultLogic(ATM_DEFAULT *atm_default, double *RainRate, double *Visibility, jrmbool RESET);


/* ------------ KAPLAN EPHEMERIS CODE ----------------------- */
SIGSIM49_API void earthtilt (double tjd, double *mobl, double *tobl, double *eq, double *dpsi, double *deps);
void fund_args (double t, double a[5]);
short int nutation_angles (double t, double *longnutation, double *obliqnutation);
SIGSIM49_API void sidereal_time (double jd_high, double jd_low, double ee, double *gst);
SIGSIM49_API void terra (EPHEMERIS fm, double alt, double st, VECTOR *pos);
void spin (EPHEMERIS fm, double st, VECTOR pos1, VECTOR *pos2);


#ifdef __cplusplus
}
#endif