Satellite DTN Simulator

A MATLAB-based simulator for Delay Tolerant Networking (DTN) over LEO satellite constellations.

Getting Started

For Simulation 1:

1. Open MATLAB.
2. Navigate to this folder and open Simulation_1.
3. Run main.m in the command window.

For Simulation 2:

---

Documentation

• User Manual: Explains how to use the GUI, what the satellite parameters mean (Altitude, RAAN, etc.), and details on RF bands (S-Band vs Ka-Band).
• Developer Documentation: Explains the code structure, classes, and how to extend the simulator.

Features

• Orbit Simulation: Models 12+ LEO satellites and Ground Stations.
• RF Link Modeling: Includes Line-of-Sight (Earth occlusion) checks and max range limits based on S-Band or Ka-Band profiles.
• DTN Routing: Simulates Store-Carry-Forward behavior (Epidemic routing) to deliver messages across disconnected path segments.
• Visualization: Includes a 3D Earth viewer to see satellite positions in real-time.

Quick Key Concepts

• DTN: Protocols for networks with intermittent connectivity (like space).
• Epidemic Routing: Messages are flooded to every node encountered to maximize delivery probability.
• S-Band: Reliable, long-range, lower speed radio.
• Ka-Band: High speed, slightly shorter effective range, sensitive radio.