Element-Theory Based Grading of Electromagnetic Environment Complexity

To solve the precise quantification of electromagnetic compatibility (EMC) performance of complex systems and the priority of system-level EMC design, an EMC classification method for complex systems based on unascertained measure theory is presented. Those five indexes, including interference threshold, sensitive threshold, spectrum occupancy rate, coupling influence degree and influenced degree which are easy to be obtained in practical engineering design, are selected as evaluation indices. Finally, credible degree recognition criterion is adapted to define EMC level, which provide certain method guidance for equipment priority in system-level EMC design.