The Constitute And Simulation Of Complex Electromagnetic Environment Based On Measured Data

As the electromagnetic environment of aerospace productions become more complicated, it’simportant to research on complicated electromagnetic environment, in order to increase the adaptabilityof aerospace productions in complicated electromagnetic environment.The complicated electromagnetic environment had made a great impact on aerospace productionsfrom investigations to manufactures, there are many examples on lower efficiency of aerospaceproductions or failing flight caused by electromagnetic interference and electromagnetic compatibility. Itis difficulty to find the trouble or make malfunction recur on account of the complexity ofelectromagnetic environment, because it’s hard to recover battlefield electromagnetic environment inlaboratory. Therefore, simulate and recover the complicated electromagnetic environment whereaerospace productions living, in the laboratory, in order to do the examination and find the trouble, itworks on the research of aerospace productions adaptability in complicated electromagneticenvironment.In this thesis, the complicated electromagnetic environment of aerospace productions have beenintroduced, by analyzing how the complicated electromagnetic environment works on the aerospaceproductions, and the solutions have been given. It analyzes how the interference signal has been catched,which came from oscillograph, equation or electromagnetic compatibility standard. The system distortthe signal in transmission, the way why the interference signal came into distortion and how to avoid ithas been found to eliminate the aberrance of interference signal in system. It makes the exactitudesimulation came true.The paper analyses that antenna factor, probe factor, cable factor etc have an impact on measuredresult, it discuss the measuring system transfer function characteristic, theory about signal recovery, andfind out the method of data processing. It introduces the key instruments of complicated electromagneticenvironment system, discusses the different jamming ways of interference signal which are conduction,radiation, and direct injection. It puts forward four test methods, transformer injection, antenna radiation,current probe injection, and interfere signal direct injection. Builds up complicated electromagneticenvironment modeling and simulation system, takes the current probe injection test as a example,expounds the process of test, reproduces the complicated electromagnetic environment successfully.