A new dual-beam technique for precise measurements of spectral reflectance in the field
A new dual-beam technique for precise measurements of spectral reflectance in the field
Field spectral measurements made using the single - beam method often include errors due to variation in illumination between measurement of the target and the
reference (panel or cosine -corrected receptor). Although the dual-beam method avoids these errors, it introduces greater complexity due to the need to intercalibrate the two sensor heads used, and it is significantly more expensive. This paper describes an alternative dual-beam method which uses a neural network to estimate the complete irradiance spectrum from measurements made in 7 narrow bands. These narrow band measurements of irradiance may be made with a simple
filter-based radiometer, thus avoiding the expense and complexity of a second spectroradiometer. The new technique has been tested using irradiance spectra from both continental and maritime locations.
Milton, E.J.
c447d4a7-b6ee-4782-a205-f240e3f5488b
Emery, D.R.
59ad41d5-e39d-418f-b4b3-e478f8d7dec3
Lawrance, D.J.
9be9e3e2-1adf-4e68-9d4a-ad943a7366c3
2000
Milton, E.J.
c447d4a7-b6ee-4782-a205-f240e3f5488b
Emery, D.R.
59ad41d5-e39d-418f-b4b3-e478f8d7dec3
Lawrance, D.J.
9be9e3e2-1adf-4e68-9d4a-ad943a7366c3
Milton, E.J., Emery, D.R. and Lawrance, D.J.
(2000)
A new dual-beam technique for precise measurements of spectral reflectance in the field.
28th International Symposium on Remote Sensing of Environment, Cape Town, South Africa, Cape Town, South Africa.
27 - 31 Mar 2000.
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Conference or Workshop Item
(Paper)
Abstract
Field spectral measurements made using the single - beam method often include errors due to variation in illumination between measurement of the target and the
reference (panel or cosine -corrected receptor). Although the dual-beam method avoids these errors, it introduces greater complexity due to the need to intercalibrate the two sensor heads used, and it is significantly more expensive. This paper describes an alternative dual-beam method which uses a neural network to estimate the complete irradiance spectrum from measurements made in 7 narrow bands. These narrow band measurements of irradiance may be made with a simple
filter-based radiometer, thus avoiding the expense and complexity of a second spectroradiometer. The new technique has been tested using irradiance spectra from both continental and maritime locations.
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EJM_CapeTown2000.pdf
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Published date: 2000
Additional Information:
http://www.icrse.org/capetown/home.html
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28th International Symposium on Remote Sensing of Environment, Cape Town, South Africa, Cape Town, South Africa, 2000-03-27 - 2000-03-31
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Local EPrints ID: 5935
URI: http://eprints.soton.ac.uk/id/eprint/5935
PURE UUID: b4a412cb-8e12-4e0c-833c-0c7f5b929e4e
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Date deposited: 21 May 2004
Last modified: 15 Mar 2024 04:46
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Contributors
Author:
E.J. Milton
Author:
D.R. Emery
Author:
D.J. Lawrance
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