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 On-line Lightning Monitoring System (OLMS) installed at the launch 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.
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