Abstract:A imperative is to study the compatibility issues existing in airborne early warning radars as AWACS coming into formation ,which is especially important when mutual interference is induced by the airborne early warning radars in different platforms . Based on the analysis of the applications of AWACS , the model on the operation of early warning radars under the conditions of complicated electromagnetic environment is established . Also, this model gives a quantitative analysis on the mutual interference of airborne early warning radars in terms of interference power and detection distance, which proposes calculation equations of airborne early warning radar. Based on that, simulation verification is conducted at the end. The study model established in this text can forecast and evaluate the mutual interference among airborne early warning radars and other device with frequency without site test. Furthermore, this study can provide efficient safeguard for the application of airborne early warning radars and management of electromagnetic Spectrum to assure the particular function of airborne early warning radars.