Source selection techniques for EMP direct drive simulation

Theoretical development of the multiport injection simulation technique proved that simulation would be exact if the proper multisource excitation was applied at the terminals of the cable. Experiments were performed to demonstrate the accuracy of the approximate Thevenin equivalent source injection technique. Judgement of the accuracy of the approximate technique was based on overlays of the injection cable response with radiating electromagnetic pulse (EMP) simulator data. In order to have a more concise method of determining the quality of an injection simulation, the concept of waveform norm attributes was investigated as a method of estimating the accuracy of a simulation. An IBM PC based software package was developed to compute the norm attributes of digitized data. Results of using the norm attributes as criteria for judging injection simulation quality are discussed