DART remote sensing spectroradiometry

Spectra acquired with the ASD FieldSpec Pro spectroradiometer for vegetation mark monitoring as part of the DART project monthly surveys

Data and Resources

Additional Info

Field Value
Author David Stott
Maintainer Anthony Beck
instrument ASD FieldSpec Pro
instrument.calibrationDetails Not available
instrument.headerMetadata Included in raw data files
instrument.measurementDomainAndUnits Radiance / reflectance from 350-2500 nm
instrumentID 6279/2
resource.abstract Spectra acquired with the ASD FieldSpec Pro spectroradiometer for vegetation mark monitoring as part of the DART project monthly surveys
resource.accessConstraints None
resource.bibliographicCitation @data{dart_remotesensing_spectroradiometry, doi = {not allocated}, url = {http://dartportal.leeds.ac.uk/dataset/dart_remotesensing_spectroradiometry}, author = {David Stott}, publisher = {The DART project, School of Computing, University of Leeds}, title = {DART remote sensing spectroradiometry}, year = {2013}, note = {DART is a Science and Heritage project funded by AHRC and EPSRC. Further DART data and details can be found at http://dartportal.leeds.ac.uk}}
resource.completeness Complete
resource.consistency Consistent data structure, attribution and relationships.
resource.creation.endDateTime 2012
resource.creation.startDateTime 2011
resource.creation.status Complete
resource.creator.email scds@leeds.ac.uk
resource.creator.name David Stott
resource.creator.orcID http://orcid.org/0000-0003-3042-2813
resource.custodian.email a.r.beck@leeds.ac.uk
resource.custodian.name Anthony Beck
resource.custodian.orcID http://orcid.org/0000-0002-2991-811X
resource.description Spectra collected with the Analytical Spectral Devices FieldSpec Pro spectro-radiometer for the monitoring of the formation of archaeological vegetation marks as part of the DART project. The spectra were recorded along GNSS located transects over known archaeological features. The spatial and temporal frequency of recording is variable as this technique is highly dependant on local weather condition, and windows of opportunity can be somewhat constrained. Ideally three readings were acquired every 30cm along the transect, from a height of 1.4m above the ground surface, on nadir with a nominal 23 degree field of fiew. Reflectance values were compared to those recorded from a barium sulphate reflectance panel. Readings were recorded within two hours either side of solar noon. The exact field of view is unknown, as this is for the bare fibre-optic cable. This creates some uncertainty as to the exact area sampled. In addition the difficulty inherent in obtaining spectra under stable illumination conditions means that some of the resultant spectra may be of relatively poor quality. This can be evaluated using the deviation between the ideal value of 1 and the readings recorded of the white reference panel. The data referenced here are organized by transect: site, then day, following the project naming convention. All sites except HHQF have a single transect. In HHQF two transects have been surveyed: these are suffixed with T1 and T2 respectively. Withn this structure the data comprise: /database - these are triples intend for database import. This has three fields; reading ID, wavelength and reflctance / radiance value. /raw_spectra These are the raw data directly exported from the ASD viewspec software, These files have been renamaed according to the reading_id reading_info. This contains a single *.txt file containing the salient information for each reading. This comprises; reading idenifier, transect identifier, position along transect, reading type (REF = reflectance, WRP = white reference panel reading, DEL = deleted / void reading), reading coordinate x, reading coordinate y (both in OSGB 1936 / ESPG 27700), date, time, instrument identifier, which optices were used, time dark current measurement was acquired, time white reference calibration was acquired.
resource.distribution.technique Download only
resource.edition 1
resource.fileFormat .txt, .zip
resource.funder Science and Heritage Programme, Arts and Humanities Research Council, Engineering and Physical Sciences Research Council
resource.instructionalMethod None - this is a collection
resource.language eng
resource.license odc-by
resource.license.typeURL http://opendatacommons.org/licenses/by/
resource.lineage None: This is raw data
resource.localURI http://dartportal.leeds.ac.uk/storage/f/dart_remotesensing_spectroradiometry
resource.metadata.creator.email scds@leeds.ac.uk
resource.metadata.creator.name David Stott
resource.metadata.creator.orcID http://orcid.org/0000-0003-3042-2813
resource.metadata.language eng
resource.methodsAndStandards Data sampled along transect & compared to white reference.
resource.processingStage Complete
resource.processingSteps Exported from *.bin files using ASD ViewSpec software, and renamed with unique identifies that enable refrencing to included spatial information
resource.publisher School of Computing, University of Leeds
resource.purpose multi-temporal heritage detection
resource.relatedResources DartProjectOverview
resource.repositoryName http://dartportal.leeds.ac.uk/
resource.reuseConstraints No conditions apply for reuse (remix it, publish it, share it, commercialise it, sell it etc.) except attribution (see resource.bibliographicCitation)
resource.reusePotential archaeology, environment, heritage, soil science, farming, ecology, geography, earth science
resource.samplingStrategy Data sampled along transect. Under Ideal conditions 9 readings were acquired along the transect per meter. The transects were 10-15m long over features generally less than 3m wide on the surface. However, most surveys were collected under less ideal conditions, so have a lower spatial sampling desnsity.
resource.topic archaeological prospection, remote sensing, hyperspectral, spectrometry
resource.type Dataset collection
resource.type.specific Text
resource.updateFrequency not planned
spatial { "type": "Polygon", "coordinates": [ [ [-1.907587, 52.280552],[-0.246205, 52.280552], [-0.246205, 51.703178], [-1.907587, 51.703178], [-1.907587, 52.280552] ] ] }
spatial-text United Kingdom
spatial.boundingBox.OSGB36.east 519741
spatial.boundingBox.OSGB36.north 266160
spatial.boundingBox.OSGB36.referenceSystem OSGB36
spatial.boundingBox.OSGB36.south 200497
spatial.boundingBox.OSGB36.west 406483
spatial.boundingBox.WGS84.eastLongitude -0.246205
spatial.boundingBox.WGS84.northLatitude 52.280552
spatial.boundingBox.WGS84.referenceSystem WGS84
spatial.boundingBox.WGS84.southLatitude 51.703178
spatial.boundingBox.WGS84.westLongitude -1.907587
spatial.defaultReferenceSystem OSGB36
spatial.driftGeology DDCF: http://www.bgs.ac.uk/lexicon/lexicon.cfm?pub=TILMP, DDPF: http://www.bgs.ac.uk/Lexicon/lexicon.cfm?pub=T1T2, HHCC: Clay: no superficial drift geology, HHQF: no superficial drift geology
spatial.landuse Permanent pasture: DDPF, Arable: DDCF, HHCF, HHQF
spatial.ordnanceSurveyPlaceName Harnhill (http://data.ordnancesurvey.co.uk/id/50kGazetteer/109734) and Diddington (http://data.ordnancesurvey.co.uk/id/50kGazetteer/72767)
spatial.polygon.OSGB36 { "type": "Polygon", "coordinates": [ [ [406483, 266160],[519741, 266160], [519741, 200497], [406483, 200497], [406483, 266160] ] ] }
spatial.polygon.WGS84 { "type": "Polygon", "coordinates": [ [ [-1.907587, 52.280552],[-0.246205, 52.280552], [-0.246205, 51.703178], [-1.907587, 51.703178], [-1.907587, 52.280552] ] ] }
spatial.solidGeology DDCF and DDPF: http://www.bgs.ac.uk/lexicon/lexicon.cfm?pub=OXC, HHCC: http://www.bgs.ac.uk/lexicon/lexicon.cfm?pub=CB, HHQF: http://www.bgs.ac.uk/lexicon/lexicon.cfm?pub=SI
temporal.rangeDescribedByDataDateTime.end 2011
temporal.rangeDescribedByDataDateTime.start 2012
temporal.resource.availableDate 2013-07-04
title.alternative dart_remotesensing_spectroradiometry
title.pattern Where appropriate each resource has been named with the following pattern: DART_<3 character sensor/collection name>_<spatial location>_<StartDateTime YYYYMMDD with optional HHMM>_<endDateTime YYYYMMDD with optional HHMM>_<stage PRO or RAW to refer to processed or raw data>_<other stuff>.<suffix>. Hence, the file DART_T3P_DDCF_20110823_20130106_PRO.csv refers to DART data collected using the T3P Imko soil moisture probes at Diddington Clay Field between 23rd August 2011 and 6th January 2013 which has been processed and is available in a comma separated text format.