Design and Implementation of Mobile Emergency Communication Terminal Based on Tiantong Satellite

In response to the problems of ground communication system paralysis or incomplete signal coverage, this paper designs and implements a mobile emergency communication terminal based on Tiantong satellite, which provides Tiantong satellite service access function for smartphones. By using Bluetooth to interact with mobile apps, SMS and phone calls can be sent and dialed through the Tiantong satellite module. By selecting and designing hardware modules, as well as coding and testing software functional modules, the system's wireless Bluetooth communication, SMS encoding and sending, voice communication, and other functions have been verified, providing a reliable solution for emergency communication.