Fidelity Evaluation of Complex Electromagnetic Environment Based on Similarity Theory

Ensuring the fidelity of the simulated electromagnetic environment is a prerequisite to perform equipment test in complex electromagnetic environment. Through abstracting the simulated and the objective electromagnetic environments as the similar systems whose components are the different types of electromagnetic signals, a fidelity evaluation method of complex electromagnetic environment based on similarity theory is proposed. The method emphatically divides and filters the similar components from the angle of receptor, then to construct the parameters of the similar characteristics. The computation model of similarity is presented, in which the layered similarities of characteristics, signals and environments are computed with different weights, thus to satisfy the requirement that the key components must be simulated realistically. The fidelity evaluation system has been implemented, and the field test demonstrates the feasibility and validity of the presented method.