Evolution of miniature detectors and focal plane arrays for infrared sensors

Computer Science – Robotics

Scientific paper

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Focal Plane Devices, High Resolution, Infrared Detectors, Near Infrared Radiation, Remote Sensing, Spectral Bands, Spectral Resolution, Temporal Resolution, Thermal Mapping, Astronomy, Bandwidth, Chemical Analysis, Earth Resources, Emittance, Fire Control, Homing Devices, Military Technology, Robotics, Signatures, Thermal Energy

Scientific paper

Sensors that are sensitive in the infrared spectral region have been under continuous development since the WW2 era. A quest for the military advantage of 'seeing in the dark' has pushed thermal imaging technology toward high spatial and temporal resolution for night vision equipment, fire control, search track, and seeker 'homing' guidance sensing devices. Similarly, scientific applications have pushed spectral resolution for chemical analysis, remote sensing of earth resources, and astronomical exploration applications. As a result of these developments, focal plane arrays (FPA) are now available with sufficient sensitivity for both high spatial and narrow bandwidth spectral resolution imaging over large fields of view. Such devices combined with emerging opto-electronic developments in integrated FPA data processing techniques can yield miniature sensors capable of imaging reflected sunlight in the near IR and emitted thermal energy in the Mid-wave (MWIR) and longwave (LWIR) IR spectral regions. Robotic space sensors equipped with advanced versions of these FPA's will provide high resolution 'pictures' of their surroundings, perform remote analysis of solid, liquid, and gas matter, or selectively look for 'signatures' of specific objects. Evolutionary trends and projections of future low power micro detector FPA developments for day/night operation or use in adverse viewing conditions are presented in the following test.

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