mirror of
https://gitlab.ibr.cs.tu-bs.de/tschuber/ns-3-leo.git
synced 2025-06-08 18:13:57 +02:00
98 lines
3 KiB
C++
98 lines
3 KiB
C++
/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
|
|
|
|
#include <math.h>
|
|
|
|
#include "ns3/log.h"
|
|
#include "ns3/mobility-model.h"
|
|
#include "ns3/double.h"
|
|
|
|
#include "leo-propagation-loss-model.h"
|
|
|
|
namespace ns3 {
|
|
|
|
NS_LOG_COMPONENT_DEFINE ("LeoPropagationLossModel");
|
|
|
|
NS_OBJECT_ENSURE_REGISTERED (LeoPropagationLossModel);
|
|
|
|
TypeId
|
|
LeoPropagationLossModel::GetTypeId (void)
|
|
{
|
|
static TypeId tid = TypeId ("ns3::LeoPropagationLossModel")
|
|
.SetParent<PropagationLossModel> ()
|
|
.SetGroupName ("Leo")
|
|
.AddConstructor<LeoPropagationLossModel> ()
|
|
.AddAttribute ("MaxDistance",
|
|
"Cut-off distance for signal propagation",
|
|
DoubleValue (1000000.0),
|
|
MakeDoubleAccessor (&LeoPropagationLossModel::m_cutoffDistance),
|
|
MakeDoubleChecker<double> ())
|
|
.AddAttribute ("ElevationAngle",
|
|
"Cut-off angle for signal propagation",
|
|
DoubleValue (20.0),
|
|
MakeDoubleAccessor (&LeoPropagationLossModel::m_elevationAngle),
|
|
MakeDoubleChecker<double> ())
|
|
.AddAttribute ("AtmosphericLoss",
|
|
"Atmospheric loss due to attenuation in dB",
|
|
DoubleValue (0.0),
|
|
MakeDoubleAccessor (&LeoPropagationLossModel::m_atmosphericLoss),
|
|
MakeDoubleChecker<double> ())
|
|
.AddAttribute ("FreeSpacePathLoss",
|
|
"Free space path loss in dB",
|
|
DoubleValue (0.0),
|
|
MakeDoubleAccessor (&LeoPropagationLossModel::m_atmosphericLoss),
|
|
MakeDoubleChecker<double> ())
|
|
.AddAttribute ("LinkMargin",
|
|
"Link margin in dB",
|
|
DoubleValue (0.0),
|
|
MakeDoubleAccessor (&LeoPropagationLossModel::m_linkMargin),
|
|
MakeDoubleChecker<double> ())
|
|
;
|
|
return tid;
|
|
}
|
|
|
|
LeoPropagationLossModel::LeoPropagationLossModel ()
|
|
{
|
|
}
|
|
|
|
LeoPropagationLossModel::~LeoPropagationLossModel ()
|
|
{
|
|
}
|
|
|
|
double
|
|
LeoPropagationLossModel::GetAngle (Ptr<MobilityModel> a, Ptr<MobilityModel> b)
|
|
{
|
|
Vector3D pa = a->GetPosition () - b->GetPosition ();
|
|
Vector3D pb = b->GetPosition ();
|
|
pb = Vector3D (-pb.x, -pb.y, -pb.z);
|
|
|
|
double prod = abs ((pa.x * pb.x) + (pa.y * pb.y) + (pa.z * pb.z));
|
|
double norm = pb.GetLength () * pa.GetLength ();
|
|
|
|
return acos (prod / norm);
|
|
}
|
|
|
|
double
|
|
LeoPropagationLossModel::DoCalcRxPower (double txPowerDbm,
|
|
Ptr<MobilityModel> a,
|
|
Ptr<MobilityModel> b) const
|
|
{
|
|
if (a->GetDistanceFrom (b) > m_cutoffDistance && GetAngle (a, b) > m_elevationAngle / 2.0)
|
|
{
|
|
return 0.0;
|
|
}
|
|
|
|
// txPowerDbm includes tx antenna gain and losses
|
|
// receiver loss and gain added at net device
|
|
// P_{RX} = P_{TX} + G_{TX} - L_{TX} - L_{FS} - L_M + G_{RX} - L_{RX}
|
|
double rxc = txPowerDbm - m_atmosphericLoss - m_freeSpacePathLoss - m_linkMargin;
|
|
|
|
return rxc;
|
|
}
|
|
|
|
int64_t
|
|
LeoPropagationLossModel::DoAssignStreams (int64_t stream)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
};
|