User Terminal Prototype Development for LAPAN's Low Orbit Constellation Satellite

A constellation satellite user terminal prototype for transmitting disaster sensors data is proposed. The design, test, and results are carried out in this research. The prototype had successfully developed using a Raspberry Pi 4 device, a DHT11 sensor, and a LimeSDR Mini. The sensor data acquired and stored in a file by the user terminal and then sent to the data collecting system. The prototype successfully transmitted data at a scheduled time in 440.4206 MHz UHF frequency band using GMSK modulation with an output power of 4.77dbm. The data size of the file sent is 1.7KB.