Digital Computer Program for Determining the Effect of High Level RF Exposure on Missile Systems

Computer programs to help solve EMC problems are needed to reduce the time and cost of predicting the susceptibility and degradation of electronic systems when operating in high level ambient electromagnetic environments. Today, such environments are present everywhere o n the surface of the earth, at launch pads, in airborne situations, and in silos below the ground where electrical interference is predominant. Computer programs are needed also in making improvements in system design and testing. The purpose is to quickly assess the risk of an operation in terms of safety, reliability and operational success. A digital computer program capable of meeting these needs is described, using a ladder network model in computing the spectral distribution of power absorbed in an Electrical Initiator of a missile system exposed t o high level radio frequency fields. The availability of accurate input source data is essential. " Receptor" circuits composed of up to 150 radiated sections plus coupling from up to 40 "Interfering" circuits can be handled by the program. The program is written in Fortran IV for 7094 computers.