How a millimeter wave scanner works
In short: A millimeter wave scanner is a whole-body imaging device used for detecting objects concealed underneath a person’s clothing.
1. Active scanners direct millimeter wave energy at the subject and then interpret the reflected energy. 2. The millimeter wave is transmitted from two antennas simultaneously as they rotate around the body. 3. The wave energy reflected back from the body or other objects is used to construct a three-dimensional image. 4. The three-dimensional image is displayed on a remote monitor for analysis.
Sources: Wikipedia, “Millimeter wave scanner (Wikipedia)” (CC BY-SA 4.0). Illustrative, not to scale.
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