The concept of optimizing electromagnetic shield to protect spacecraft equipment from electromagnetic interference sources in the near zone of radiated field

The paper discusses a concept for optimizing design parameters of electromagnetic shields to protect sensitive equipment onboard a spacecraft against powerful electromagnetic interference in the near zone of radiation. The objective of the optimization is to select geometric parameters of the shield and construction materials in order to achieve the required shielding efficiency at lowest economic cost. The paper describes a method of simulating sources of electromagnetic interference in the form of equivalent radiators and their emitted fields. This method is based on using measurements of field strength from actual onboard hardware, which significantly improves the accuracy of the models. The paper presents a method for calculating the electrical component of the electromagnetic field generated by the source in the near zone. It discusses a method for calculating electrical field penetrating through the shield. It also presents an algorithm for obtaining initial data needed to optimize shield parameters for powerful sources of electromagnetic interference onboard a spacecraft.