Electromagnetic pickups by long heliax cables in lightning environments

The RF pickups by the long heliax cables at space launch sites in lightning environments were assessed by performing a field-to-cable coupling analysis which were verified via measurement data collected with the online lightning monitoring system (OLMS) installed at the lauch site. It was found that while some pickup amplitudes may be discernable, the action integrals, a measure of energies due to lightning, of these RF pickups seem always indistinguishable from the noise floors.