Application of EMC probability entropy in system level electromagnetic compatibility study

In order to quantitatively describe electromagnetic compatibility of complex systems like airplane, this paper introduces electromagnetic interference elements probability space, electromagnetic susceptibility elements probability space, electromagnetic interference correlated pair´s information quantity and EMC probability entropy. Meanwhile, it expounds the physical meaning of the four concepts mentioned above and the relationship among them. Computation of EMC probability entropy is performed on the system level electromagnetic compatibility analysis of airborne system, the results are in fairly agreement with the actual state. Finally, this paper proposes that EMC probability entropy is an important and effective way to the quantitative study on system electromagnetic compatibility.