Optics: measuring and testing – By dispersed light spectroscopy – With sample excitation
Patent
1997-10-07
1999-06-22
Evans, F. L.
Optics: measuring and testing
By dispersed light spectroscopy
With sample excitation
2504581, G01N 2164
Patent
active
059147792
ABSTRACT:
The system and method allow spectroscopic analysis of vegetation or the like without effects from changing sun and cloud conditions, undesired portions of the area of interest or atmospheric disturbances. The system (1) includes a light source (5) such as a xenon flash lamp, a telescope (7), a spectrometer (9), an analog/digital converter (11), a memory (13), a display (15), and an on-board microprocessor (17) or a port (19) for attachment to a laptop computer. The system is taken to an area of interest in the woods (step 41), the vegetation is illuminated from below (step 43) and data are taken (step 45).
REFERENCES:
patent: 3836782 (1974-09-01), Forbes et al.
patent: 4200801 (1980-04-01), Schuresko
James E. Kalshoven and David P. Rosten, "An Active Optical Remote Sensing System for Vegetation Index Determination", IEEE International Geoscience and Remote Sensing Symposium Remote Sensing for a Sustainable Future, IEEE Catalog No. 96CH35875, vol. III, pp. 1809-1811, USA, May 27-31, 1996.
James E. Kalshoven, Airborne Ground Illuminator for Hyperspectral Validation and Calibration, SPIE Proceedings Earth Observing System, vol. 2820, pp. 67-71, USA, Aug. 5-6, 1996.
Evans F. L.
The United States of America as represented by the Administrator
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