The University of Southampton
University of Southampton Institutional Repository

Sources of uncertainty in vicarious calibration: understanding calibration target reflectance

Sources of uncertainty in vicarious calibration: understanding calibration target reflectance
Sources of uncertainty in vicarious calibration: understanding calibration target reflectance
A field experiment investigated the hypothesis that the nadir reflectance of calibration surface substrates (asphalt and concrete) remains stable over a range of time-scales. Measurable differences in spectral reflectance factors were found over periods as short as 30 minutes. Multi-date reflectance measurements were compared using ANOVA and found to differ significantly (p = 0.001). Surface reflectance showed a relationship with the relative proportion of diffuse irradiance, over periods when solar zenith changes were minimal. These findings illustrate the anisotropic nature of calibration surfaces, and place emphasis on the need for collection of diffuse and global irradiance measurements at the time of remotely-sensed data acquisition.
2072-2074
Institute of Electrical and Electronics Engineers (IEEE)
Anderson, K.
ef4598bc-7bac-4a63-8d41-ec30d6cfd2b6
Milton, E.J.
c447d4a7-b6ee-4782-a205-f240e3f5488b
Rollin, E.M.
32665285-7f95-40a4-9775-7a9b2958f758
Anderson, K.
ef4598bc-7bac-4a63-8d41-ec30d6cfd2b6
Milton, E.J.
c447d4a7-b6ee-4782-a205-f240e3f5488b
Rollin, E.M.
32665285-7f95-40a4-9775-7a9b2958f758

Anderson, K., Milton, E.J. and Rollin, E.M. (2003) Sources of uncertainty in vicarious calibration: understanding calibration target reflectance. In IGARSS '03 Proceedings of the International Geoscience and Remote Sensing Symposium, 21-25 July 2003, Toulouse, France. Institute of Electrical and Electronics Engineers (IEEE). pp. 2072-2074 .

Record type: Conference or Workshop Item (Paper)

Abstract

A field experiment investigated the hypothesis that the nadir reflectance of calibration surface substrates (asphalt and concrete) remains stable over a range of time-scales. Measurable differences in spectral reflectance factors were found over periods as short as 30 minutes. Multi-date reflectance measurements were compared using ANOVA and found to differ significantly (p = 0.001). Surface reflectance showed a relationship with the relative proportion of diffuse irradiance, over periods when solar zenith changes were minimal. These findings illustrate the anisotropic nature of calibration surfaces, and place emphasis on the need for collection of diffuse and global irradiance measurements at the time of remotely-sensed data acquisition.

Text
Anderson_Milton_Rollin_2003copyright.pdf - Other
Download (455kB)

More information

Published date: 2003
Additional Information: CD-ROM
Venue - Dates: IGARSS '03 Proceedings of the International Geoscience and Remote Sensing Symposium, Toulouse, France, 2003-07-20 - 2003-07-24

Identifiers

Local EPrints ID: 5011
URI: http://eprints.soton.ac.uk/id/eprint/5011
PURE UUID: 21405c53-609b-463e-9eeb-d09cf8e0aa2d

Catalogue record

Date deposited: 21 May 2004
Last modified: 08 Jan 2022 12:46

Export record

Contributors

Author: K. Anderson
Author: E.J. Milton
Author: E.M. Rollin

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.

×