//首先,选择在起始时刻所有满足条件的卫星, //查找这些卫星的最大高度角的位置(附近6小时内),选择距离远的, //查找其结束点高度角时刻, //继续遍历 public PeriodPrn BuildOnePeriodPrnByCenterTop(Time startTime) { var endTime = startTime + SearchTimeSpan; List <String> prnsString = GetStartPrns(startTime); List <TableCell> maxCells = new List <TableCell>(); foreach (var colName in prnsString) { if (SatElevationTable.MinusNext(colName, startTime) < 0) //方向必须朝上 { var max = SatElevationTable.GetFirstSlopeApproxTo(colName, CutOffAngle, startTime, false); // var max = SatElevationTable.GetMaxCell(colName, startTime, endTime); maxCells.Add(max); } } if (maxCells.Count == 0) { return(null); } var longest = maxCells.OrderByDescending(m => m.RowNumber).First(); SatelliteNumber selectedPrn = SatelliteNumber.Parse(longest.ColName); var endTimePeriod = (Time)SatElevationTable.GetIndexValue(longest.RowNumber); TimePeriod TimePeriod = new Geo.Times.TimePeriod(startTime, endTimePeriod); var PeriodPrn = new PeriodPrn(TimePeriod, selectedPrn); return(PeriodPrn); }
private PeriodPrn BuildOnePeriodPrnByCenterTop2(Time startTime) { var endTime = startTime + SearchTimeSpan; List <String> prnsString = GetStartPrns(startTime); List <TableCell> maxCells = new List <TableCell>(); foreach (var item in prnsString) { if (SatElevationTable.MinusNext(item, startTime) < 0) //方向必须朝上 { var max = SatElevationTable.GetMaxCell(item, startTime, endTime); maxCells.Add(max); } } var longest = maxCells.FindAll(m => (double)m.Value > CutOffAngle).OrderByDescending(m => m.RowNumber).First(); SatelliteNumber selectedPrn = SatelliteNumber.Parse(longest.ColName); //查找其结尾处,满足条件的时刻或历元 var startTime2 = (Time)SatElevationTable.GetIndexValue(longest.RowNumber); var endTime2 = startTime2 + SearchTimeSpan; TableCell endCell = SatElevationTable.GetCellApproxTo(longest.ColName, CutOffAngle, startTime2, endTime2); var endTimePeriod = (Time)SatElevationTable.GetIndexValue(endCell.RowNumber); TimePeriod TimePeriod = new Geo.Times.TimePeriod(startTime, endTimePeriod); var PeriodPrn = new PeriodPrn(TimePeriod, selectedPrn); return(PeriodPrn); }
/// <summary> /// 默认构造函数 /// </summary> /// <param name="perid"></param> /// <param name="val"></param> public TimePeriodValue(TimePeriod perid, TValue val) { this.Value = val; this.TimePeriod = perid; }
public int CompareTo(TimePeriodValue <TValue> other) { return(TimePeriod.CompareTo(other.TimePeriod)); }