A Discrete-Event Network Simulator
API
uan-noise-model-default.cc
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1 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
2 /*
3  * Copyright (c) 2009 University of Washington
4  *
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12  * GNU General Public License for more details.
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16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17  *
18  * Author: Leonard Tracy <lentracy@gmail.com>
19  */
20 
22 #include "ns3/double.h"
23 
24 #include <cmath>
25 
26 namespace ns3 {
27 
28 NS_OBJECT_ENSURE_REGISTERED (UanNoiseModelDefault);
29 
31 {
32 
33 }
34 
36 {
37 }
38 
39 TypeId
41 {
42  static TypeId tid = TypeId ("ns3::UanNoiseModelDefault")
44  .SetGroupName ("Uan")
45  .AddConstructor<UanNoiseModelDefault> ()
46  .AddAttribute ("Wind", "Wind speed in m/s.",
47  DoubleValue (1),
49  MakeDoubleChecker<double> (0))
50  .AddAttribute ("Shipping", "Shipping contribution to noise between 0 and 1.",
51  DoubleValue (0),
53  MakeDoubleChecker<double> (0,1))
54  ;
55  return tid;
56 }
57 
58 // Common acoustic noise formulas. These can be found
59 // in "Priniciples of Underwater Sound" by Robert J. Urick
60 double
62 {
63  double turb, wind, ship, thermal;
64  double turbDb, windDb, shipDb, thermalDb, noiseDb;
65 
66  turbDb = 17.0 - 30.0 * std::log10 (fKhz);
67  turb = std::pow (10.0, turbDb * 0.1);
68 
69  shipDb = 40.0 + 20.0 * (m_shipping - 0.5) + 26.0 * std::log10 (fKhz) - 60.0 * std::log10 (fKhz + 0.03);
70  ship = std::pow (10.0, (shipDb * 0.1));
71 
72  windDb = 50.0 + 7.5 * std::pow (m_wind, 0.5) + 20.0 * std::log10 (fKhz) - 40.0 * std::log10 (fKhz + 0.4);
73  wind = std::pow (10.0, windDb * 0.1);
74 
75  thermalDb = -15 + 20 * std::log10 (fKhz);
76  thermal = std::pow (10, thermalDb * 0.1);
77 
78  noiseDb = 10 * std::log10 (turb + ship + wind + thermal);
79 
80  return noiseDb;
81 }
82 
83 } // namespace ns3
Standard ambient acoustic noise model.
#define NS_OBJECT_ENSURE_REGISTERED(type)
Register an Object subclass with the TypeId system.
Definition: object-base.h:45
double m_shipping
Shipping contribution to noise between 0 and 1.
double m_wind
Wind speed in m/s.
virtual double GetNoiseDbHz(double fKhz) const
Compute the noise power at a given frequency.
Every class exported by the ns3 library is enclosed in the ns3 namespace.
static TypeId GetTypeId(void)
Register this type.
UAN Noise Model base class.
Ptr< const AttributeAccessor > MakeDoubleAccessor(T1 a1)
Create an AttributeAccessor for a class data member, or a lone class get functor or set method...
Definition: double.h:42
virtual ~UanNoiseModelDefault()
Dummy destructor, DoDispose.
This class can be used to hold variables of floating point type such as &#39;double&#39; or &#39;float&#39;...
Definition: double.h:41
a unique identifier for an interface.
Definition: type-id.h:58
TypeId SetParent(TypeId tid)
Set the parent TypeId.
Definition: type-id.cc:915
UanNoiseModelDefault()
Default constructor.