/// <summary>
/// GPS时间转儒略日
/// </summary>
public static void tmGPSTimeToJulianDay(GPSTIME pGPSTime, JULIANDAY pJulianDay)
{
double dTemp;
dTemp = pGPSTime.lWeek * 7L + (double)pGPSTime.lSecond / 86400.0
+ pGPSTime.dFraction;
pJulianDay.lDay = (long)(dTemp + 2444244.5);
pJulianDay.lSecond = (pGPSTime.lSecond % 86400 + 43200L) % 86400L;
pJulianDay.dFraction = pGPSTime.dFraction;
}
/// <summary>
/// GPS时间转日历时
/// </summary>
public static void tmGPSTimeToTime(ref GPSTIME pGPSTime, ref TIME pTime)
{
JULIANDAY jd;
double dTemp;
dTemp = pGPSTime.lWeek * 7L + (double)pGPSTime.lSecond / 86400.0
+ pGPSTime.dFraction / 86400.0;
jd.lDay = (long)(dTemp + 2444244.5);
jd.lSecond = (pGPSTime.lSecond % 86400 + 43200L) % 86400L;
jd.dFraction = pGPSTime.dFraction;
tmJulianDayToTime(ref jd, ref pTime);
}
/// <summary>
/// 儒略日转GPS时间
/// </summary>
public static void tmJulianDayToGPSTime(JULIANDAY pJulianDay, GPSTIME pGPSTime)
{
double dTemp;
long lTemp;
dTemp = pJulianDay.lDay +
(double)(pJulianDay.lSecond + pJulianDay.dFraction) / 86400.0;
lTemp = (long)(dTemp - 2444244.5);
pGPSTime.lWeek = (long)((lTemp) / 7);
pGPSTime.lSecond = (long)(lTemp % 7 * 86400L)
+ (pJulianDay.lSecond + 43200L) % 86400L;
pGPSTime.dFraction = pJulianDay.dFraction;
}
/// <summary>
/// 日历时转GPS时间
/// </summary>
public static void tmTimeToGPSTime(ref TIME pTime, ref GPSTIME pGPSTime)
{
JULIANDAY jd;
double dTemp;
long lTemp;
jd.dFraction = 0.0;
jd.lDay = 0;
jd.lSecond = 0;
tmTimeToJulianDay(ref pTime, ref jd);
dTemp = jd.lDay + (double)(jd.lSecond + jd.dFraction) / 86400.0;
lTemp = (long)(dTemp - 2444244.5);
pGPSTime.lWeek = (long)((lTemp) / 7);
pGPSTime.lSecond = (long)(lTemp % 7 * 86400L) + pTime.byHour * 3600L
+ pTime.byMinute * 60L + (long)pTime.dSecond;
pGPSTime.dFraction = pTime.dSecond - (long)pTime.dSecond;
}
