Improved Active Interference Canceling Algorithms for Real-Time Protection of 2nd/3rd Level Facilities in Electronic Warfare Environment

Abstract

In an electronic warfare environment, important equipment or facilities of the friendlies are placed in protective facilities to protect against external Electronic Attacks (EA). No matter how well shielded the facility is, some external electromagnetic waves may penetrate through various paths such as power lines or fans, and the electromagnetic waves may be fatal to certain devices due to the structural resonance of the protective facilities. This paper introduced a real-time electromagnetic canceling technique that removes the resonance field inside the protection facility caused by the intended electronic attack from the enemy. The method makes it possible to cancel the process much faster than the conventional ones that have applied the Matrix Pencil Method (MPM). This is because the internal resonant field can be predicted in a closed-form under the assumption that the external electromagnetic wave is a complex exponential function. Longer exposure to Intended Electromagnetic Interference (IEMI) could be fatal for some devices. Therefore, it is imperative to attenuate the noise within a short time, and a method of reducing internal noise in real-time is beneficial for Electronic Protection (EP). The proposed method could be applied as a new technique to protect important protection facilities, rather than the more traditional method called wrapping using the Faraday cage effect.

Advances in MXene Films: Synthesis, Assembly, and Applications

“…The main function or mechanism of EMI shielding materials is to reflect electromagnetic radiations by charge carriers that interact directly with the electromagnetic field [152]. Good EMI shielding materials should exhibit excellent performance in two aspects: reduce partial harmful electromagnetic radiations and protect internal devices from external radiations [153][154][155]. Therefore, the entire surface of the electromagnetic shielding device must be continuously conductive, and the absorption of electromagnetic radiations must occur through the material's electric and/or magnetic dipoles interaction with radiations.…”