The University of Southampton
University of Southampton Institutional Repository

Exploring the relation between spatial structure and wavelength: implications for sampling reflectance in the field

Exploring the relation between spatial structure and wavelength: implications for sampling reflectance in the field
Exploring the relation between spatial structure and wavelength: implications for sampling reflectance in the field
Recently, the variogram has been used to represent the spatial dependence in remotely sensed data obtained from ground-based, airborne and satellite-borne sensors. The variogram may be used in a variety of techniques such as kriging, cokriging, and conditional simulation and, in particular, optimal sampling design. However, little is known about the relation between spatial variation (summarized by the variogram) and spectral wavelength. Therefore, an investigation was undertaken to determine the relation between spatial dependence and wavelength for two field sites in England: one at Middlebere Heath on the Isle of Purbeck, Dorset, and the other at the Isle of Grain, Kent. At both sites, visible and near-infrared reflectance spectra comprising 252 wavebands were obtained using a Spectron SE-590TM spectroradiometer for 100 observations spaced 1m apart along 100m transects. Variograms were computed for 235 wavebands and these plotted as a three-dimensional surface. The resulting surfaces revealed changes with wavelength not only in the amount, but also in the scales of spatial variation. The spatial variation in all 235 wavelengths was approximately two-dimensional for both case studies. The implication for the design of optimal strategies with which to sample reflectance in the field is that two (and only two) sample spacings are necessary to sample all 235 wavebands
0143-1161
2663-2678
Atkinson, P.M.
aaaa51e4-a713-424f-92b0-0568b198f425
Emery, D.
7d813648-1e55-4ff2-970d-c2c5e1ef536e
Atkinson, P.M.
aaaa51e4-a713-424f-92b0-0568b198f425
Emery, D.
7d813648-1e55-4ff2-970d-c2c5e1ef536e

Atkinson, P.M. and Emery, D. (1999) Exploring the relation between spatial structure and wavelength: implications for sampling reflectance in the field. International Journal of Remote Sensing, 20 (13), 2663-2678. (doi:10.1080/014311699212001).

Record type: Article

Abstract

Recently, the variogram has been used to represent the spatial dependence in remotely sensed data obtained from ground-based, airborne and satellite-borne sensors. The variogram may be used in a variety of techniques such as kriging, cokriging, and conditional simulation and, in particular, optimal sampling design. However, little is known about the relation between spatial variation (summarized by the variogram) and spectral wavelength. Therefore, an investigation was undertaken to determine the relation between spatial dependence and wavelength for two field sites in England: one at Middlebere Heath on the Isle of Purbeck, Dorset, and the other at the Isle of Grain, Kent. At both sites, visible and near-infrared reflectance spectra comprising 252 wavebands were obtained using a Spectron SE-590TM spectroradiometer for 100 observations spaced 1m apart along 100m transects. Variograms were computed for 235 wavebands and these plotted as a three-dimensional surface. The resulting surfaces revealed changes with wavelength not only in the amount, but also in the scales of spatial variation. The spatial variation in all 235 wavelengths was approximately two-dimensional for both case studies. The implication for the design of optimal strategies with which to sample reflectance in the field is that two (and only two) sample spacings are necessary to sample all 235 wavebands

Text
Atkinson_&_Emery_IJRS_1999.pdf - Other
Restricted to Registered users only
Download (477kB)

More information

Published date: 1999

Identifiers

Local EPrints ID: 17335
URI: http://eprints.soton.ac.uk/id/eprint/17335
ISSN: 0143-1161
PURE UUID: 56445b59-c205-41f3-bcd3-31d657803c36

Catalogue record

Date deposited: 24 Aug 2005
Last modified: 28 Oct 2019 19:33

Export record

Altmetrics

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.

×