Bonn 2020 – scientific programme

The DPG Spring Meeting in Bonn had to be cancelled! Read more ...

Parts | Days | Selection | Search | Updates | Downloads | Help

AGA: Arbeitsgruppe Physik und Abrüstung

AGA 8: Non-Nuclear Verification

AGA 8.1: Talk

Friday, April 3, 2020, 12:35–13:00, H-HS XVII

Acoustic and Seismic Modelling of Tracked-Vehicle Signals for Monitoring and Verification — •Mathias Pilch — Technische Universität Dortmund, Experimentelle Physik III, Dortmund, Germany

To better understand the characteristics of acoustic and seismic signals of tracked vehicles measured when passing a sensor line, we numerically model acoustic pressure-pulse and seismic force-pulse responses in air and a layered soil that is similar in its seismic properties to that found at the original measurement site. For tracked vehicles, the strongest sources of acoustic excitation are the exhaust, the intakes and the track mechanism. Seismic excitation is caused by road wheels rolling over track elements, applying vertical force pulses to the ground. Acoustic excitation stems mostly from the engine exhausts and couples into the ground. Acoustic and seismic signals from single pressure pulses are computed by an acoustic-seismic-modelling program with receiver stations at many slant distances. The acoustic-seismic coupling observed in the model generally fits to the expectations. The overall goal is to simulate a pass of a tracked vehicle by superposition of acoustically and seismically produced signals.