An airborne short wave infrared /SWIR/ pushbroom imaging system using a 64-element PbS detector arrayResearch evidence indicates that data in the short wave infrared (SWIR) spectral region will greatly improve the information content of remotely sensed data. Bands are required in the 1.55-1.75 micron and 2.08-2.35 micron spectral regions for a variety of agricultural and geological investigations. It is anticipated that future Landsat sensors will use pushbroom linear array technology to obtain high resolution, improved sensitivity and increased system reliability. To obtain early laboratory and field data, an airborne pushbroom image system has been designed for operation in the short wave infrared spectral region. The system uses a 64-element staggered PbS array and is operated at 195 K; the instrument has been designed to operate in an aircraft and will view a 19 degree swath width with a 5.8 mrad IFOV. The spectral bandwidth of each channel is .05 micron and the noise equivalent reflectivity in the order of .2% is provided. The requirements for more advanced detector arrays for use in future NASA spacecraft remote sensing instruments are also discussed.
Document ID
19810041546
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Husain-Abidi, A. S. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Tom, D. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Blaine, L. R. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Ostrow, G. (NASA Goddard Space Flight Center Greenbelt, Md., United States)