- DFMDs use electromagnetic fields to detect metallic objects as a person walks through the frame. Key components include the electronic unit (generating fields, processing signals), the frame structure (cross piece, side panels), and sometimes a remote control or interface. - Lead curtains are used for shielding against X-rays, commonly found in X- ray baggage scanners to protect operators and the environment from radiation. They are not part of the metal detection principle.
Which one of the following is not part of DFMD ?
Asked in UPSC CISF AC EXE 2020 · Topic: Defence Electronics and Communication Systems (Battlefield Surveillance and Target Acquisition Systems)
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