AVIRIS Scan Drive Design And Performance

D. C . Miller

doi:10.1117/12.942284

1 January 1987 AVIRIS Scan Drive Design And Performance

D. C . Miller

Proceedings Volume 0834, Imaging Spectroscopy II; (1987) https://doi.org/10.1117/12.942284
Event: 31st Annual Technical Symposium on Optical and Optoelectronic Applied Sciences and Engineering, 1987, San Diego, CA, United States

Abstract

The Airborne Visible/Infrared Imaging Spectrometer (AVIRIS) images the ground with an instantaneous field of view (IFOV) of 1 mrad. The IFOV is scanned 30 deg from left to right to provide the cross-track dimension of the image, while the aircraft's motion provides the along-track dimension. The scanning frequency is 12 Hz, with a scan efficiency of 70%. The scan mirror has an effective diameter of 5.7 in., and its positional accuracy is a small fraction of a milliradian of the nominal position-time profile. This paper describes the design and performance of the scan drive mechanism. Trade-offs among various approaches are discussed, and the reasons given for the selection of the cam drive. The salient features of the design are presented. The method of measuring performance is described, and the performance results are given.

Citation Download Citation

D. C . Miller "AVIRIS Scan Drive Design And Performance", Proc. SPIE 0834, Imaging Spectroscopy II, (1 January 1987); https://doi.org/10.1117/12.942284

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