Low Cost System for Terrestrial Trunked Radio Signals Monitoring Based on Software Defined Radio Technology and Raspberry Pi 4
Robert Helbet, Vasile Monda, Andrei Cristian Bechet, Paul Bechet · 2020
In the last years, Software Defined Radio (SDR) platforms, as a result of the facilities offered, have become attractive for applications in the field of electromagnetic field monitoring. Present work aimed to implement a cheap electromagnetic field monitoring system to trace signals specific to the Terrestrial Trunked Radio (TETRA) standard and to check its capabilities. The chosen solution is based on the ADALM-PLUTO SDR platform controlled by a Raspberry Pi 4 device. Testing the system demonstrated the following performances: 5.12 MHz instantaneous acquisition band; dynamic range of the input signal level between (-100...-30) dBm; 2.5 kHz frequency resolution; portability and flexibility for use in outdoor environments; low cost.