Theory and practice for advanced sensor evaluation and test /ASET/ facility calibration

Physics – Optics

Scientific paper

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Calibrating, Infrared Detectors, Remote Sensors, Signal Processing, Space Environment Simulation, Test Facilities, Antenna Arrays, Black Body Radiation, Focal Plane Devices, Infrared Reflection, Infrared Telescopes, Mirrors, Monitors

Scientific paper

The Advanced Sensor Evaluation and Test (ASET) Facility is a system for the calibration and exercise of infrared sensors under conditions simulating those of outer space. Sensors consist of a telescope, detector focal plane array, electronics, and data processing equipment. They detect radiation from distant, unresolved objects in the 4 micron to 30 micron wavelength region. The ASET facility comprises two radiant sources collimating optics to place the sources at infinity, scanning mirrors to permit two-axis control of the test beam, a radiation monitor, and associated control and computer interface equipment. The radiant incidence range over which the sensors normally operate precludes the use of an unattenuated blackbody source; the ASET sources use blackbody emitters in conjunction with attenuators difficult to characterize theoretically. An experimental calibration of the facility was performed to determine the spectral radiant incidence in the test beams.

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