The University of Southampton
University of Southampton Institutional Repository

Estimating spectral irradiance from measurements in seven spectral bands

Estimating spectral irradiance from measurements in seven spectral bands
Estimating spectral irradiance from measurements in seven spectral bands
Accurate measurement and characterisation of fluctuations in the irradiance environment is important for many areas of optical remote sensing. This paper reports a method of estimating spectral irradiance over the VNIR region (400 - 1100nm) from the radiance of a calibrated reference panel, measured in seven narrow (10nm) spectral bands. Earlier work established the potential for estimating spectral irradiance from multi-band data using a neural network technique (Milton et al., 2000). The approach described here uses linear regression analysis to regenerate the irradiance spectrum from data in seven reference wavelengths. The method was tested using data from a specially designed multiband radiometer – the INdependent SPectral IRradiance Estimator (INSPIRE). The irradiance spectrum was partitioned into a number of distinct regions within each of which the spectral irradiance was estimated from irradiance measured at one of the reference wavelengths. The precision of the method was found to be better than ±5% over most wavelengths from 400nm to 1100nm. Furthermore, the slope coefficients of the individual regression models were found to be sensitive to the sky radiance conditions, especially over the region 600-760nm, and improvement in the precision of the predicted spectrum (to within ±3%) was obtained by taking the diffuse-to-global (D:G) irradiance ratio at the time of measurement into account.
10pp
Remote Sensing and Photogrammetry Society
Rollin, E.M.
32665285-7f95-40a4-9775-7a9b2958f758
Milton, E.J.
c447d4a7-b6ee-4782-a205-f240e3f5488b
Aplin, P.
Mather, P.M.
Rollin, E.M.
32665285-7f95-40a4-9775-7a9b2958f758
Milton, E.J.
c447d4a7-b6ee-4782-a205-f240e3f5488b
Aplin, P.
Mather, P.M.

Rollin, E.M. and Milton, E.J. (2003) Estimating spectral irradiance from measurements in seven spectral bands. Aplin, P. and Mather, P.M. (eds.) In Proceedings of the RSPSoc 2003 : Scales and dynamics in observing the environment, University of Nottingham, 10-12 Sep 2003. Remote Sensing and Photogrammetry Society. 10pp .

Record type: Conference or Workshop Item (Paper)

Abstract

Accurate measurement and characterisation of fluctuations in the irradiance environment is important for many areas of optical remote sensing. This paper reports a method of estimating spectral irradiance over the VNIR region (400 - 1100nm) from the radiance of a calibrated reference panel, measured in seven narrow (10nm) spectral bands. Earlier work established the potential for estimating spectral irradiance from multi-band data using a neural network technique (Milton et al., 2000). The approach described here uses linear regression analysis to regenerate the irradiance spectrum from data in seven reference wavelengths. The method was tested using data from a specially designed multiband radiometer – the INdependent SPectral IRradiance Estimator (INSPIRE). The irradiance spectrum was partitioned into a number of distinct regions within each of which the spectral irradiance was estimated from irradiance measured at one of the reference wavelengths. The precision of the method was found to be better than ±5% over most wavelengths from 400nm to 1100nm. Furthermore, the slope coefficients of the individual regression models were found to be sensitive to the sky radiance conditions, especially over the region 600-760nm, and improvement in the precision of the predicted spectrum (to within ±3%) was obtained by taking the diffuse-to-global (D:G) irradiance ratio at the time of measurement into account.

Text
Rollin_Milton_2003.pdf - Other
Download (439kB)

More information

Published date: 2003
Venue - Dates: conference; 2003-09-10; 2003-09-12, Nottingham, UK, 2003-09-10 - 2003-09-12

Identifiers

Local EPrints ID: 6177
URI: http://eprints.soton.ac.uk/id/eprint/6177
PURE UUID: 41170f1b-99d9-4967-9364-36a3d5a28001

Catalogue record

Date deposited: 12 Jun 2004
Last modified: 15 Mar 2024 04:47

Export record

Contributors

Author: E.M. Rollin
Author: E.J. Milton
Editor: P. Aplin
Editor: P.M. Mather

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×