VID, PID, CID, BHI, BDA are associated with which type of imagery?

• A. Active imagery sensors
• B. Passive imagery sensors
• C. Radar sensors
• D. Thermal imaging

Answer: (B)

This question tests your understanding of passive versus active imaging. VID, PID, CID, BHI, and BDA refer to data types produced by passive optical sensors, which collect energy that comes from the scene or from ambient sources without emitting their own signals. They rely on visible light or infrared radiation that is reflected or emitted by objects, so no energy is sent out by the sensor itself. That’s why these terms align with passive imagery sensors.

Active imaging sensors, like radar, require the sensor to emit a pulse and then measure the return signal, which is not what these acronyms describe. Thermal imaging is also a passive modality, since it detects infrared energy emitted by objects, but the listed acronyms point to general passive optical data channels rather than thermal-specific techniques, making passive imagery sensors the best umbrella category.