NIR/SWIR imaging spectrometer for light satellites

Anthony J. Ratkowski; Ronald J. Huppi; Matthew P. Fetrow

doi:10.1117/12.185259

13 September 1994 NIR/SWIR imaging spectrometer for light satellites

Anthony J. Ratkowski, Ronald J. Huppi, Matthew P. Fetrow

Proceedings Volume 2209, Space Optics 1994: Earth Observation and Astronomy; (1994) https://doi.org/10.1117/12.185259
Event: Space Optics '94, 1994, Garmisch, Germany

Abstract

There has been long-standing interest in satellite-borne imaging IR sensors for a variety of applications in the commercial, environmental, and defense sectors. Recent availability of high quality, low-cost IR focal plane arrays and high-speed processing hardware has lead to the development of several optically-filtered radiometric imaging sensor systems. However, a more versatile satellite system results from a spectrally agile sensor. In this paper we present a design and performance analysis of an imaging grating spectrometer system which simultaneously collects high-spectral-resolution and high-spatial-resolution data in the NIR or SWIR region. The data can be presented as radiometrically calibrated spatial images for any wavelength and bandwidth in the sensor bandpass. Additionally, spectra can be produced for each spatial region of the image. Spectral and spatial data gathered with a prototype sensor of similar design are presented to illustrate these data products and the potential utilization and merits of the design concept. The overall design and cooling techniques are compatible with light-satellite applications requiring a minimum operating period of one year.

Citation Download Citation

Anthony J. Ratkowski, Ronald J. Huppi, and Matthew P. Fetrow "NIR/SWIR imaging spectrometer for light satellites", Proc. SPIE 2209, Space Optics 1994: Earth Observation and Astronomy, (13 September 1994); https://doi.org/10.1117/12.185259

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