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Code Issues Releases Wiki Activity

Fix LOS computation for ISL

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This commit is contained in:
Tim Schubert 2020-08-17 22:50:58 +02:00
parent bf59e66526
commit 0f49ceb4aa
10 changed files with 37 additions and 22 deletions
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19
model/isl-propagation-loss-model.cc
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@ -55,25 +55,29 @@ IslPropagationLossModel::~IslPropagationLossModel ()
const double
IslPropagationLossModel::EARTH_RAD = 6.3781E6;
IslPropagationLossModel::EARTH_RAD_E6 = 6.371;
bool
IslPropagationLossModel::GetLos (Ptr<MobilityModel> a, Ptr<MobilityModel> b)
{
// origin of LOS
Vector3D o = a->GetPosition ();
o = Vector3D (o.x / 1e6, o.y / 1e6, o.z / 1e6);
double ol = o.GetLength ();
// second point of LOS
Vector3D bp = b->GetPosition ();
double bl = bp.GetLength ();
bp = Vector3D (bp.x / 1e6, bp.y / 1e6, bp.z / 1e6);
// unit vector
Vector3D u = Vector3D ((o.x-bp.x)/bl, (o.y-bp.y)/bl, (o.z-bp.z)/bl);
Vector3D u = Vector3D (o.x-bp.x, o.y-bp.y, o.z-bp.z);
u = Vector3D (u.x / u.GetLength (), u.y / u.GetLength (), u.z / u.GetLength ());
// center point of sphere is 0
double uo = (u.x*o.x) + (u.y*o.y) + (u.z*o.z);
double delta = (uo*uo) - (ol*ol - (EARTH_RAD*EARTH_RAD));
double delta = (uo*uo) - (ol*ol - (EARTH_RAD_E6*EARTH_RAD_E6));
//NS_LOG_DEBUG ("a_pos="<<o<<";b_pos"<<bp<<";delta="<<delta);
return delta < 0;
}
@ -83,15 +87,14 @@ IslPropagationLossModel::DoCalcRxPower (double txPowerDbm,
Ptr<MobilityModel> a,
Ptr<MobilityModel> b) const
{
// primitivec cut-of at 1000 km
if (!GetLos (a, b))
{
return 0.0;
}
double rxc = 0.0;//-m_variable->GetValue ();
NS_LOG_DEBUG ("attenuation coefficient="<<rxc<<"Db");
return txPowerDbm + rxc;
NS_LOG_INFO ("LOS;"<<a->GetPosition ()<<";"<<b->GetPosition ());
return txPowerDbm;
}
int64_t