Which imaging modalities may be used by EFVS?

Which imaging modalities may be used by EFVS?

• A. Forward-looking infrared, millimeter wave radiometry, millimeter wave radar, or low-light level image intensification
• B. Radar altimeter
• C. Radio communications
• D. Pitot-static sensors

Answer: (A)

EFVS relies on imaging sensors that create a view of the outside world when visibility is poor. The imaging modalities used can include forward-looking infrared, which detects heat differences and shows objects that are not visible to the naked eye; low-light level image intensification, which amplifies scarce light to produce a usable image in darkness; and millimeter-wave techniques like millimeter-wave radar, which actively sends signals and forms an image from the reflections, as well as millimeter-wave radiometry, which uses the energy at mm-wave frequencies emitted or reflected by objects to render an image. Together, these sensors allow you to visualize terrain, obstacles, and other aircraft even in fog, smoke, or darkness. Radar altimeter, radio communications, and pitot-static sensors do not create external images; they provide altitude data, communications, or air-data information, respectively.

EFVS relies on imaging sensors that create a view of the outside world when visibility is poor. The imaging modalities used can include forward-looking infrared, which detects heat differences and shows objects that are not visible to the naked eye; low-light level image intensification, which amplifies scarce light to produce a usable image in darkness; and millimeter-wave techniques like millimeter-wave radar, which actively sends signals and forms an image from the reflections, as well as millimeter-wave radiometry, which uses the energy at mm-wave frequencies emitted or reflected by objects to render an image. Together, these sensors allow you to visualize terrain, obstacles, and other aircraft even in fog, smoke, or darkness. Radar altimeter, radio communications, and pitot-static sensors do not create external images; they provide altitude data, communications, or air-data information, respectively.