Airborne multiband imaging spectrometer

Details Airborne multiband imaging spectrometer Airborne multiband imaging spectrometer

1992-09-12

1994-01-04

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250236, G01J 350

Patent

active

052763218

ABSTRACT:
A multichannel imaging spectrometer for airborne geological, geophysical and environmental surveys in a moving vehicle. An optical scanner employs a rotating polygon allowing reduced scan optics with increased data acquisition efficiency. Multiple spectrometers integrally registered allow channelization of the received signal to optimize noise performance in the range from ultraviolet through infrared. Output data is in a form for recording and real time display. A staring mode configuration provides enhanced sensitivity by using a two-dimensional detector array and adjustable mirror orientation. A scanning mode embodiment employs a two-dimensional detector array with time delay integration and three-dimensional storage of temporal spatial data and spectral wavelength and intensity. Thus, all channels are acquired simultaneously, resulting in perfect band-to-band registration with continuous spectral curves over the field of view.

REFERENCES:
patent: 4912321 (1990-03-01), Cooper
patent: 4952809 (1990-08-01), McEwen
patent: 4989086 (1991-06-01), Schaff
patent: 5107364 (1992-04-01), Cooper
Kruse, The Analysis of Scientific Data from NASA Airborne Systems, Scientific Computing & Automation, Jun. 1992, pp. 15-22.
McCracken, CCDing in the Dark, IEEE Spectrum, May 1992, pp. 30-34.
Borstad Assoc., Low Cost Digital Remote Sensing using the Compact Airborne Spectrographic Imager, 2pp.
Itres Research, Compact Airborne Spectrographic Imager, 4pp.

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