An L-Band EMI Analysis of a UAV System Sustained by PX4 - Dobrea Dan-Marius скачать в хорошем качестве

An L-Band EMI Analysis of a UAV System Sustained by PX4 - Dobrea Dan-Marius

Electromagnetic interference (EMI) degrades any system's performance or even stops it from functioning. This presentation analyzes the EMI of various UAV components and how they affect several GPS modules (M8N, F9P, and M9M). A PX4 UAV requires at least two links to fully achieve its basic functionalities: an RC and a telemetry link. Several characteristics describe these links, but the most important is the EMI generated to the GPS module. The presentation focus, in the 1st step, on the analyses of the EMI generated by these links implemented through: (a) an AFHDS RC and a standard 433 MHz telemetry link, (b) a TBS crossfire link, and (c) an ExpressLRS link. The goal is to understand these links better and find the best solution to solve the EMI issues generated by these connections. The onboard computers have their own specific electric and magnetic field, which interferes more or less with the GPS. For this reason, in the 2nd step, seven single-board computers were analyzed: DragonBoard 410c, NavQ, NavQ Plus, Raspberry Pi (3B+ and 4B), Jetson Nano, and Xavier NX. Results are quantized based on the parameters obtained from the PX4 logging system and the measured spectrum through an RSPdx system. Other aspects of EMI generated by I2C, HDMI, or USB are also presented. Dobrea Dan-Marius "Gh. Asachi" Technical University of Iasi Professor Dobrea Dan Marius was born in Onesti, Romanian, in 1973. He receives the Ph.D. degree at the “Gheorghe Asachi” Technical University of Iasi, Faculty of Electronics, Telecommunication & Information Technology, Iasi, Romania in 2005. In 2018 he was awarded with the degree of habilitation. Dobrea Dan Marius is currently professor at the same faculty, at the Department of Applied Electronics and Intelligent System. His research interests are in the areas of UAV, intelligent systems, digital signal processing, embedded systems, robotics, sensors, IoT and virtual reality.