Primary optical subsystem for DMSP Block 5D

Mathematics – Logic

Scientific paper

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Meteorological Instruments, Meteorological Satellites, Multispectral Band Scanners, Optical Equipment, Satellite-Borne Instruments, Design Analysis, High Resolution, Image Motion Compensation, Infrared Detectors, Military Spacecraft, Optical Scanners, Telescopes

Scientific paper

An overview of the optical design of the Operational Linescan System for the Defense Meteorological Satellite Program Block 5D Satellites, is presented. The function of the optics is to receive wideband visible and infrared radiation globally from the earth and to deliver portions of that radiation to each of three detectors located at focal points of the optical system. There are two portions of the optical system: the telescope, a five-mirror surface Cassegrain assembly which scans the scene in the cross-track direction; relay optics, the stationary optical subsystem, consisting of both lenses and mirrors which distributes the telescope output among three detector focal points. Image motion compensation, glare suppression, contamination control, and geometric resolution, are discussed.

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