The author is with the U.S. Army Chemical and Biological Defense Command, Edgewood Research, Development, and Engineering Center, Aberdeen Proving Ground, Maryland 21010-5423.
Arthur H. Carrieri, "Panoramic infrared-imaging spectroradiometer model with reverse phase-modulated beam broadcasting," Appl. Opt. 36, 1952-1964 (1997)
The optical design of a passive remote sensor, a panoramic
spectroradiometer (PANSPEC), and its computer-simulated image performance are
presented. PANSPEC monitors the surrounding infrared environment for chemical
clouds, detecting a presence once absorption or emission spectra characteristic
of the chemical species are resolved. PANSPEC broadcasts chemical presence and cloud heading when
equipped with a laser transmitter that projects a polarized laser beam source with phase encryption back
through the optical system into object space. Various merit functions were programmed and accessed
during computer optimization runs for shaping and positioning of the instrument’s semishell entrance
window, collector, collimator, interferometer, and imager. The result is a
balanced near-diffraction-limited circular image, 6.3 mm across with 10-line
pairs/mm spatial resolution at 50% modulation, and an
f/2.3 working speed.
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