How to Implement Satellite optical networks in OMNeT++
To implement satellite optical networks in OMNeT++ has needs to execute the communication among the satellites using the optical links that is known as inter-satellite links (ISLs) and these networks are usually used for high-speed data transmission among the satellites and can also involve to ground stations. If you want to carry out project performance then omnet-manual.com will be your trusted partner. The below are the procedures to implement the satellite optical network in OMNeT++ with practical examples.
Step-by-Step Implementation:
- Define the Satellite Network Architecture
- Satellites: Represent the nodes in space that will communicate with each other using optical links.
- Ground Stations: Symbolize the nodes on the Earth’s surface that interact with satellites.
- Optical Links (ISLs): it denotes the high-speed, long-distance optical communication links among the satellites and between satellites and ground stations.
- Create OMNeT++ Modules for Satellites, Ground Stations, and Optical Links
- Satellite Module: It denotes a satellite node capable of transmitting and receiving optical signals.
- Ground Station Module: It signifies a ground station capable of communicating with satellites through optical signals.
- Optical Link Module: To emulate the optical communication link among satellites or among a satellite and a ground station.
Example: Satellite Module
simple Satellite {
gates:
inout opticalIn[4]; // For communication with other satellites or ground stations
parameters:
double altitude @unit(“km”) = default(1000); // Satellite altitude
@display(“i=device/satellite”);
}
Example: Ground Station Module
simple GroundStation {
gates:
inout opticalIn[2]; // For communication with satellites
parameters:
@display(“i=device/groundstation”);
}
Example: Optical Link Module
simple OpticalLink {
parameters:
double distance @unit(“km”) = default(1000); // Distance between satellites or satellite and ground station
double dataRate @unit(“Gbps”) = default(10); // Data rate of the optical link
double latency @unit(“ms”) = default(5); // Latency for the optical signal to travel the distance
gates:
in opticalIn; // Input from one satellite or ground station
out opticalOut; // Output to another satellite or ground station
}
- Implement the Internal Logic of Each Component
- Satellite Logic: Manage the transmission and reception of optical signals from other satellites or ground stations.
- Ground Station Logic: To handle the communication with satellites has to sending and receiving data.
- Optical Link Logic: To emulate the transmission of data over optical links that has contain to manage the latency and any signal attenuation.
Example: Satellite Logic in C++
#include <omnetpp.h>
class Satellite : public omnetpp::cSimpleModule {
protected:
virtual void handleMessage(omnetpp::cMessage *msg) override;
};
Define_Module(Satellite);
void Satellite::handleMessage(omnetpp::cMessage *msg) {
if (strcmp(msg->getName(), “opticalData”) == 0) {
// Process incoming data or forward it to another satellite
int outGateIndex = 0; // Example: forward to the first link
send(msg, “opticalIn$o”, outGateIndex);
} else {
// Handle other types of messages, if any
}
}
Example: Optical Link Logic in C++
#include <omnetpp.h>
class OpticalLink : public omnetpp::cSimpleModule {
protected:
virtual void handleMessage(omnetpp::cMessage *msg) override;
virtual void initialize() override;
double distance;
double dataRate;
double latency;
};
Define_Module(OpticalLink);
void OpticalLink::initialize() {
distance = par(“distance”);
dataRate = par(“dataRate”);
latency = par(“latency”);
}
void OpticalLink::handleMessage(omnetpp::cMessage *msg) {
// Simulate transmission delay based on distance and latency
sendDelayed(msg, latency, “opticalOut”);
}
- Integrate the Components in a NED File
- Describe the network topology that associates the satellites with optical links and satellites to ground stations.
- Specify the positions of the satellites and ground stations to model the network’s layout.
Example: Satellite Optical Network Topology in NED
network SatelliteOpticalNetwork {
submodules:
satelliteA: Satellite {
parameters:
altitude = 1000;
}
satelliteB: Satellite {
parameters:
altitude = 1000;
}
groundStation: GroundStation;
linkAB: OpticalLink {
parameters:
distance = 2000; // Distance between satelliteA and satelliteB
dataRate = 10Gbps;
latency = 10ms;
}
linkAG: OpticalLink {
parameters:
distance = 1000; // Distance between satelliteA and groundStation
dataRate = 10Gbps;
latency = 5ms;
}
connections allowunconnected:
satelliteA.opticalIn[0] –> linkAB.opticalIn;
linkAB.opticalOut –> satelliteB.opticalIn[0];
satelliteA.opticalIn[1] –> linkAG.opticalIn;
linkAG.opticalOut –> groundStation.opticalIn[0];
}
- Simulate and Analyse the Satellite Optical Network
- Compile: Make sure that all modules are compiled in OMNeT++.
- Execute: execute the simulation to monitor how information is transferred among satellites and between satellites and ground stations.
- Analyse: Use OMNeT++ tools to measure the network’s performance that has latency, throughput, and signal quality.
- Advanced Features
- Dynamic Topology: Apply the logic to emulate the movement of satellites, changing distances and link latencies dynamically.
- Adaptive Routing: Execute the adaptive routing algorithms that change the path of data based on the current state of the network.
- Interference Modelling: It consist modelling of potential interference or signal degradation because of atmospheric conditions or other factors.
Example: Dynamic Topology and Adaptive Routing
- Satellite Movement: Execute periodic updates to the positions of satellites and adapt the performance metrics of optical links respectively.
- Routing Algorithm: Execute a routing technique that chooses the best path for data transmission based on the current network topology.
Example: Dynamic Topology in C++
void Satellite::handleMessage(omnetpp::cMessage *msg) {
if (strcmp(msg->getName(), “updatePosition”) == 0) {
// Update the satellite’s position and recalculate link distances
double newAltitude = par(“altitude”) + uniform(-10, 10);
par(“altitude”).setDoubleValue(newAltitude);
// Notify connected links of the position change
send(msg, “opticalIn$o”, 0); // Example: notify the first link
} else {
// Normal message handling
send(msg, “opticalIn$o”, 0);
}
}
The above following procedures are used to implement the satellite optical network using the OMNeT++ tool that provides the high speed transmission among the networks. If you have any query regarding the satellite optical network we will offered it