A method of increasing the electromagnetic immunity of the Spectrum Monitoring Sensor to UAV’s by using a shielded casing

Abstract

The article presents a method for increasing the electromagnetic immunity of a spectrum monitoring sensor installed on an unmanned aerial vehicle (UAV) through the use of a specially designed shielded enclosure. The paper describes the design and implementation process of the shielded casing, focusing on limiting the influence of external electromagnetic disturbances on the sensor’s sensitive electronic components. The design solutions included the selection of materials with high shielding effectiveness over a wide frequency range, the application of filters and feedthroughs to suppress conducted interference, and the use of conductive gaskets to ensure electromagnetic continuity of the enclosure. The effectiveness of the proposed solutions was verified through laboratory tests of radiated and conducted emissions conducted in accordance with the MIL-STD-461G standard, including RE102 and CE102 measurements. Comparative tests performed for the sensor operating with and without the shielded enclosure demonstrated a significant reduction in emission levels in critical frequency ranges. The results confirm an improvement in electromagnetic compatibility and increased immunity of the sensor to interference generated by UAV onboard systems. The study shows that a properly designed shielded enclosure is an effective and practical approach to enhancing electromagnetic immunity of sensors used on UAV platforms and provides valuable guidelines for protecting other electronic devices operating in high-interference environments.

Keywords: Unmanned Aerial Vehicles, MIL-STD-461G, Electromagnetic Compatibility, Spectrum Monitoring Sensor, Electromagnetic Emissions, Shielded Casing.

DOI: 10.54941/ahfe1007692