/// <summary>
/// 运行单次仿真
/// </summary>
public Dictionary<Fingerprint_Name, Fingerprint> RunSingleSimulation(int num_rays, Transmitter.EMIT_OPTION emit_option, Signal_Type signal_type,
Noise_Type noise_type, double[] noise_params, int N)
{
foreach(Transmitter trans in this.Transmitters)
{
trans.Reset();
trans.EmitRays(num_rays, emit_option); //各发射机辐射波束
foreach(Receiver rec in this.Receivers)
{
rec.Reset();
if(this.IsLOS(trans.Location, rec.Location)) //若存在LOS情况
{
LineSegment segLOS = new LineSegment(trans.Location, rec.Location);
Ray rayLOS = new Ray(trans, new LineSegment[] { segLOS }, segLOS.DirectionRadian, trans.CenterFrequency, trans.EmitPower * trans.Gain, trans.EmitPower * trans.Gain, true);
rec.AcceptRay(rayLOS, this);
}
}
foreach(Ray ray in trans.Rays) //更新每条ray, 若被接收，则更新接收它的接收机
{
Receiver rec = null;
while (!ray.Update(this, out rec)) ;
if (rec != null)
rec.AcceptRay(ray, this);
}
}
FingerprintGenerator fg = new FingerprintGenerator();
Dictionary<Fingerprint_Name, Fingerprint> result = new Dictionary<Fingerprint_Name,Fingerprint>();
List<double>[] ray_angles = new List<double>[this.receivers.Count];
List<double>[] ray_strengths = new List<double>[this.receivers.Count];
List<double>[] ray_taus = new List<double>[this.receivers.Count];
int i = 0;
foreach(Receiver rec in this.Receivers)
{
ray_angles[i] = new List<double>();
ray_strengths[i] = new List<double>();
ray_taus[i] = new List<double>();
foreach(Ray ray in rec.Rays)
{
ray_angles[i].Add(ray.CurrentDirection);
ray_strengths[i].Add(ray.FadedPower(this.MeterPixelRatio));
ray_taus[i].Add(ray.GetLifeSpan(this.MeterPixelRatio));
}
i++;
}
double[] args = null;
switch (signal_type)
{
case Signal_Type.PSEUDO_DOPPLER:
if (this.receivers.First().Value.Antenna.AntType != AntennaType.PSEUDO_DOPPLER)
return null;
Antenna_PseudoDoppler ant = this.receivers.First().Value.Antenna as Antenna_PseudoDoppler;
args = fg.PackArgs_PseudoDoppler(this.receivers.First().Value.FrequencyLow, this.receivers.First().Value.CenterFrequency,
this.receivers.First().Value.SampleFrequency, ant.SwitchFrequency, ant.Radius, ant.AntennaNumber);
break;
}
for (int j = 0; j < Enum.GetNames(new Fingerprint_Name().GetType()).Length; j++ )
result[(Fingerprint_Name)j] = fg.SingleFingerprintSim(signal_type, noise_type, noise_params, (Fingerprint_Name)j, ray_angles, ray_strengths, ray_taus,
N, args);
return result;
}
/// <summary>
/// 生成加噪信号序列
/// </summary>
/// <param name="noise_type">噪声类型</param>
/// <param name="signal">原始信号</param>
/// <param name="noise_params">噪声参数集合，与噪声类型有关</param>
/// <returns>加噪的信号序列</returns>
public double[][] AddNoise(Noise_Type noise_type, double[][] signal, double[] noise_params)
{
MWNumericArray arr = AddNoise_MW(noise_type, new MWNumericArray(2, signal[0].Length, signal[0], signal[1]), noise_params);
if (arr == null)
return null;
double[][] result = new double[2][];
result[0] = (double[])arr.ToVector(MWArrayComponent.Real);
result[1] = (double[])arr.ToVector(MWArrayComponent.Imaginary);
return result;
}
/// <summary>
/// 进行单次指纹生成仿真，包括信号生成、加噪和指纹生成
/// </summary>
/// <param name="signal_type">信号类型</param>
/// <param name="noise_type">噪声类型</param>
/// <param name="noise_params">噪声参数集合，与噪声类型有关</param>
/// <param name="fingerprint_name">指纹类型</param>
/// <param name="ray_angles">波束方向集合</param>
/// <param name="ray_strengths">波束强度集合</param>
/// <param name="ray_taus">波束时延集合</param>
/// <param name="N">信号点数</param>
/// <param name="args">args参数集合，与信号类型有关</param>
/// <returns></returns>
public Fingerprint SingleFingerprintSim(Signal_Type signal_type, Noise_Type noise_type, double[] noise_params,
Fingerprint_Name fingerprint_name, List<double>[] ray_angles, List<double>[] ray_strengths,
List<double>[] ray_taus, int N, double[] args)
{
MWNumericArray[] signals = new MWNumericArray[ray_angles.GetLength(0)];
for(int i = 0; i < signals.Length; i++)
{
signals[i] = this.GenerateSignal_MW(signal_type, ray_angles[i].ToArray(), ray_strengths[i].ToArray(), ray_taus[i].ToArray(), N, args);
signals[i] = this.AddNoise_MW(noise_type, signals[i], noise_params);
}
Fingerprint fp = this.GenerateFingerprint(signal_type, fingerprint_name, signals, args);
return fp;
}
/// <summary>
/// 生成加噪信号序列
/// </summary>
/// <param name="noise_type">噪声类型</param>
/// <param name="signal">原始信号</param>
/// <param name="noise_params">噪声参数集合，与噪声类型有关</param>
/// <returns>加噪的信号序列</returns>
public MWNumericArray AddNoise_MW(Noise_Type noise_type, MWNumericArray signal, double[] noise_params)
{
if (signal == null)
return null;
switch(noise_type)
{
case Noise_Type.NONE:
{
return signal;
}
case Noise_Type.GAUSSIAN:
{
MWNumericArray snr = new MWNumericArray(noise_params[0]);
MWNumericArray arr = (MWNumericArray)sptb.AddNoise_Gaussian(signal, snr);
return arr;
}
case Noise_Type.SAS:
{
MWNumericArray alpha = new MWNumericArray(noise_params[0]);
MWNumericArray snr = new MWNumericArray(noise_params[1]);
MWNumericArray arr = (MWNumericArray)sptb.AddNoise_SAS(signal, alpha, snr);
return arr;
}
}
return null;
}
