/// <summary>
/// 日历时间转换为GNSS周周秒时间
/// </summary>
/// <param name="calendar">日历</param>
/// <param name="gnssOriginMjdDay">GNSS时间起算点</param>
/// <returns></returns>
public GnssTime(Calendar calendar, GnssSystem gnssSystem = null)
{
if (gnssSystem == null)
{
gnssSystem = GnssSystem.Gps;
}
this.GnssSystem = gnssSystem;
int Week;
Decimal secondsOfWeek;
TimeConvert.CalendarToGnssTime(calendar, gnssSystem.OriginMjdDay, out Week, out secondsOfWeek);
this.GnssWeek = Week;
this.SecondsOfWeek = new Second(secondsOfWeek);
}