A Comprehensive Review of Real-Time Safety Alarm Systems Using GPS, LoRa, IoT, and Satellite Communication for Emergency SOS Applications

This review paper presented a comprehensive analysis of modern emergency communication systems integrating LoRa, GPS, IoT, and satellite communication technologies. Existing research demonstrates that LoRa communication offers low-power long-range connectivity suitable for remote monitoring and military applications, while satellite systems such as Iridium and Cospas-Sarsat provide global emergency communication coverage.   The study identified critical challenges including security vulnerabilities, communication latency, signal interference, and energy limitations. Security analysis of Iridium communication revealed the importance of implementing robust encryption and authentication mechanisms in future satellite systems.   Hybrid communication architectures integrating LoRa, GPS, IoT, and satellite communication appear highly promising for next-generation emergency SOS systems. Future research should focus on secure communication frameworks, AI-assisted monitoring, self-healing networks, and energy-efficient wearable technologies to improve reliability, scalability, and operational effectiveness.   Overall, the integration of modern communication technologies has the potential to significantly improve emergency response systems, military communication infrastructures, and global rescue operations.

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