Cutting-edge personnel security screening relies on microwave imaging, where addressing future security demands entails integrating digital twins into development and testing processes. To create a realistic digital twin for microwave imaging systems, accurate replication of microwave images obtained from scanning real individuals is crucial, achieved through electromagnetic simulation. Employing fast simulation methods reduces the computational load to a viable level, yet it introduces some computational inaccuracies due to underlying approximations. The extent to which these inaccuracies affect microwave images is often unclear, while digital twins are already being used. To thoroughly assess this unknown influence, the simulation results obtained with physical optics (PO) and geometrical optics (GO) are compared with an integral equation (IE) solution approach using two scenarios of a walk-through personnel security screening in the frequency band below 10.6 GHz. Remarkably, while radar images are highly similar, raw signals exhibit significant deviations. Thus, for radar image simulation, PO and GO appear sufficiently accurate, offering attractive runtimes below two minutes per simulation. Conversely, the IE method proves impractical in many situations, as a single image necessitates over three weeks of computations.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.