Characteristic Mode Analysis Prediction and Guidance of Electromagnetic Coupling Measurements to a UAV Model

Abstract

In this work, we study the current coupled to a simplified Unmanned Aerial Vehicle (UAV) model using a dual computational and experimental approach. The simplified surrogate structure reduced the computational burden and facilitated the experimental measurement of the coupled currents. For a practical system, a wide range of simulations and measurements must be performed to analyze the induced current variations with respect to properties of the incident excitation waveform such as the frequency, angle of incidence, and polarization. To simplify this analysis, Characteristic Mode Analysis (CMA) was used to compute the eigen-currents of the UAV model and predict where and under which RF excitation conditions the coupled current is maximized. We verified these predictions using direct experimental measurement of the coupled currents. The presented simulations and measurements show the usefulness of CMA for studying electromagnetic coupling to practical systems.

UAS-Guided Analysis of Electric and Magnetic Field Distribution in High-Voltage Transmission Lines (Tx) and Multi-Stage Hybrid Machine Learning Models for Battery Drain Estimation

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“…Fig. 44, 45 and 46 respectively shows the MAPE vs Run Time for S 10 P i , S 30 P i , S 60 P i : using 10s, 30s and 60s of historical data to predict i= [5,10,15,20,25,30] seconds of battery power drain in future for the different regression algorithms, allowing comparison of the prediction accuracy and Run Time(s) across models. Lower MAPE scores indicate better model performance but we also care for the Run Time(s) as we are predicting seconds of data in the future, so we also need a model which runs fast enough.…”

An Inexpensive Unmanned Aerial Vehicle-Based Tool for Mobile Network Output Analysis and Visualization

“…UAVs also play a major role in electromagnetic coupling measurements, as it was shown in [ 18 ]. The authors of this paper described how UAVs operate in congested wireless environments that, when used in certain application domains (i.e., mobile base stations) exacerbate electromagnetic compatibility (EMC) and/or electromagnetic interference (EMI).…”

Electromagnetic Compatibility Study of Quadcopter Uavs: Characteristic Mode Analysis of the Frame's Material and Shape Effect

“…CMA has been extensively employed in designing antennas and analyzing the electromagnetic scattering characteristics of various structures [14][15][16][17][18][19][20][21][22][23][24][25][26][27]. Moreover, we recently employed CMA to study coupling and interference to wires and other 2-D structures [28][29][30]. However, applying CMA for complex shapes composed of one or more dielectric materials is still under development [31][32][33][34][35][36][37].…”