Based on the EMC characteristics of the Complicated system

a closeness degree model of systematic evaluation is established and a strategy to determine the weight of each index on the basis of ANP (the Analytic Network Process) is ascertained.By use a generalized standard point which is determined by sample statistical method on the historical database to replace the ideal point which is determined by traditional TOPSIS (Technique for Order Preference by Similarity to Ideal Solution)

EMC synthetical evaluation can be achieved with the weighted-distance concentration operator.The proposed methodology make the evaluation result fit to be reused.A case study on Vehicular Communication System is used to illustrate the applicability and effectiveness of the proposed approach.