/// <summary>
/// 计算两点之间距离
/// </summary>
/// <param name="fromCoordinate">起始点坐标</param>
/// <param name="toCoordinate">终止点坐标</param>
/// <returns>两点之间距离(单位:km)</returns>
public static double GetKmDistance(EMCGeographyCoordinate fromCoordinate, EMCGeographyCoordinate toCoordinate)
{
double dalg = 0.0;
double dala = 0.0;
double dblg = 0.0;
double dbla = 0.0;
if (fromCoordinate != null)
{
dalg = 2 * PI * fromCoordinate.Longitude.Value / 360;
dala = 2 * PI * fromCoordinate.Latitude.Value / 360;
}
if (toCoordinate != null)
{
dblg = 2 * PI * toCoordinate.Longitude.Value / 360;
dbla = 2 * PI * toCoordinate.Latitude.Value / 360;
}
double result = earthRadius * Math.Sqrt((dbla - dala) * (dbla - dala) + (dblg - dalg) * (dblg - dalg) * Math.Cos(dbla) * Math.Cos(dbla));
if (result < minDistance)
{
result = minDistance;
}
return(result);
}
/// <summary>
/// 构造函数
/// </summary>
/// <param name="equipID">所属设备编号</param>
/// <param name="freq">发射频率</param>
/// <param name="transmitter">发射机参数</param>
/// <param name="coordinate">地理坐标</param>
public Transmitter(string equipID, ComparableFreq freq, TransmitterParams transmitter, EMCGeographyCoordinate coordinate)
{
this.equipID = equipID;
this.freqValue = freq;
this.transmitterParams = transmitter;
this.coordinate = coordinate;
}
/// <summary>
/// 构造函数
/// </summary>
/// <param name="equipID">设备编号</param>
/// <param name="freqValue">接收机频率</param>
/// <param name="receiverParams">接收机参数</param>
/// <param name="coordinate">接收机坐标</param>
public Receiver(string equipID, ComparableFreq freqValue, ReceiverParams receiverParams, EMCGeographyCoordinate coordinate)
{
this.equipID = equipID;
this.receiverParams = receiverParams;
this.freqValue = freqValue;
this.coordinate = coordinate;
}