Research On Electromagnetic Compatibility Design Technique For Electro-optical Jamming System

With the development of modern defense equipment, because of mobility, flexibility, vehicle-mounted optoelectronic devices get widely used,but systems often has strong electromagnetic radiation device and weak signal processing unit, electromagnetic compatibility issues will be cause system performance degradation, affecting the overall system performance, even lead the failure key components.Adopted circuit coupled edge finite element method, modeling and computer high-power TEA CO₂ laser’s electromagnetic radiation; laser’s electromagnetic radiation measured results show, near field and low frequency electric field’s maximum error is 14. 2dBμV /m and magnetic’s field Maximum error is 6. 6dBμA /m,provide a basis for electromagnetic compatibility prediction.Introduced electromagnetic topology theory to the optical jamming system’s EMC forecast, based on analysis of topological model, combined with BLT equation, transmission line theory, near-field coupling theory, forecast the sensitive equipment’s electromagnetic compatibility, guide EMC interference system design.Based on high-power TEA CO₂ laser ’s strong electromagnetic interference characteristics, combined with theoretical calculations and experimental results, carried out the laser’s electromagnetic shielding cabin, power filter design, grounding, other sensitive sub-system design, verify laser electromagnetic radiation has been effectively suppressed, ensuring mutual compatibility between subsystems.