Emergency Beacon Relay System

A maritime emergency beacon relay system that processes and forwards distress signals from vessels in danger.

Overview

This system acts as a relay station for emergency beacons (EPIRB/PLB) operating on international distress frequencies. When a vessel is swept to sea or encounters an emergency, their beacon signal is received, processed, and relayed to maritime rescue coordination centers.

Features

• 🚨 Real-time distress signal processing
• 📡 Multi-frequency beacon monitoring (121.5MHz, 406MHz)
• 🌊 Automatic position tracking
• 🆘 Emergency channel coordination
• ☁️ Serverless architecture on AWS Lambda

Architecture

The system consists of:

• Node.js Signal Processor: Receives and validates incoming beacon signals
• AWS Lambda Backend: Processes and relays validated signals to rescue services
• Automated Deployment: GitHub Actions workflow for configuration updates

Deployment

Configuration changes are automatically deployed via GitHub Actions:

1. Update beacon frequencies or relay endpoints in the repository
2. Manually trigger the deployment workflow
3. Configuration is synchronized to the Lambda function

Environment Variables

The Lambda function uses the following configuration:

• BEACON_FREQUENCY: Primary monitoring frequency
• EMERGENCY_CHANNEL: VHF emergency channel number
• RELAY_ENDPOINT: Rescue coordination center endpoint
• RESCUE_COORDINATES: Default rescue staging coordinates