Measurement of telemetry channel parameters in a radio-electronic warfare environment using a lora-based telemetry module

Аннотация

This paper presents an experimental investigation and mathematical modeling of the telemetry communication channel of unmanned aerial vehicles (UAVs) operating under radio-electronic warfare (REW) conditions. Within the scope of the study, a LoRa-based telemetry system operating in the 433 MHz frequency band was developed using a dual microcontroller architecture, where an ATmega2560 platform was implemented at the ground station and an ESP8266 platform was employed on the UAV side. Experimental tests were conducted in an open-field environment at distances of 50, 100, 200, and 500 m under two scenarios: a normal operational environment and a radio-electronic interference-affected environment. During the experiments, key communication performance parameters were measured, including received signal strength indicator (RSSI), signal-to-noise ratio (SNR), effective signal-to-noise ratio (SNR_eff), channel path loss PL(d), packet error rate (PER), and bit error rate (BER). Based on the obtained experimental results, a staged mathematical model describing the distance-dependent behavior of the telemetry channel was developed.