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The joint trial of the beginning of the system design of the vehicle , there is no system electromagnetic compatibility design , vehicle systems , radio communication has obvious interference , background noise is too large , seriously affecting the normal car radio communication . The more vehicle tops equipment , electromagnetic interference phenomenon is more common , positioned directly interfere with and eliminate interference more difficult . This thesis is based on interference phenomena , on the basis of detailed analysis of the system components and the system spectral , through quantitative testing interference locator determines that the computer and radar systems is the main source of interference . Computer radio interference band interference pattern , by introducing conductive gasket transfer impedance , the establishment of the shielding effectiveness of the simulation model of the computer chassis and conductive gasket selection and simulation ; against the radiative coupling between the the radar the upstream signal line and radio , Multi-shielded cable transfer impedance , shielded cable shielding performance simulation model , develop the screen efficiency Termination of the uplink signal cable design ; another power filtering and grounding system design , appropriate electromagnetic compatibility design improvements. The renovation project after the implementation of the system interference is verified , radio interference is significantly reduced , the effect of reconstruction basically achieve the desired goals .
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