EMI hardening of missile ground support systems-a case study

Advanced technology, high density and increased complexity of electronics equipment calls for a detailed EMI evaluation of a missile ground support system. A missile ground support system is most vulnerable to both intra-system and inter-system EMI. To attain success of the mission, it is very important to harden all the subsystems of the missile ground support system individually and take the necessary steps to ensure the total electromagnetic compatibility (EMC) of the system. The authors describe various problems encountered during the EMI performance evaluation of the subsystems and also after integrating the subsystems into a vehicle. They also discuss various control techniques used in the subsystem level as well as in the system level to overcome the problems.