A Time-domain incident field extrapolation technique based on the singularity expansion method
report
In this report, a method is presented to extrapolate measurements from Nuclear Electromagnetic Pulse (NEMP) assessments directly in the time domain. This method is based on a time-domain extrapolation function which is obtained from the Singularity Expansion Method representation of the measured incident field of the NEMP simulator. Once the time-domain extrapolation function is determined, the responses recorded during an assessment can be extrapolated simply by convolving them with the time-domain extrapolation function. It is found that to obtain useful extrapolated responses, the incident field measurement needs to be made minimum phase; otherwise unbounded results can be obtained. Results obtained with this technique are presented, using data from actual assessments
TNO Identifier
195716
Publisher
Defence Research Establishment Ottawa (DREO)
Place of publication
Ottawa (Canada)