Data

Uncorrected GNSS (GPS) observational data collected in the Windmill Islands on the 19/01/2018 and 20/01/2018

Australian Antarctic Data Centre
WILKINS, DANIEL ; WHITE, DUANNE
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ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=info:doi10.26179/5d942b653b9bd&rft.title=Uncorrected GNSS (GPS) observational data collected in the Windmill Islands on the 19/01/2018 and 20/01/2018&rft.identifier=10.26179/5d942b653b9bd&rft.publisher=Australian Antarctic Data Centre&rft.description=Uncorrected GPS/GNSS observational data collected using an Altus APS3G GNSS receiver on a 2m survey pole by Anne Hellie on the 19th and 20th of January, 2018 (UTC time). The excel file “Uncorrected_data.xlsx” contains the output of eight different data files collected (SILLS to SILLS 7). The data has been compiled into the worksheet “Uncorrected_data”. The other worksheets contain copies of the notes from Carlson Surv PC (the software used to collect the points), along with a lot more metadata. Using ArcGIS 10.3 and the XtoolsPro extension, “Uncorrected_data” has been made into an ArcGIS shapefile (*.shp) and GoogleEarth *.kml file. Both are named “4318_2018”, with their appropriate extensions. Note that since these points were collected in autonomous mode (with no RTK or SBAS solutions), these are uncorrected data points, and have poor accuracy, particularly in the vertical (see the VSDV field for the vertical standard deviation). The accuracy of these positions can be substantially improved by differentially correcting/post-processing the data. This can be done with the open source software RTKLIB. Using the Septentrio software (SBF converter), the raw data files (*.sbf files collected by the Septentrio unit) have been converted into Rinex *.obs files to facilitate this process. The base station files for the appropriate time period can be downloaded from the Geoscience Australia Geodesy ftp server. The closest base station (CORS) is located at Casey and known as “cas1”. ftp://ftp.ga.gov.au/geodesy-outgoing/gnss/data/highrate/2018/&rft.creator=WILKINS, DANIEL &rft.creator=WHITE, DUANNE &rft.date=2019&rft.coverage=northlimit=-66.11607; southlimit=-66.65733; westlimit=109.94019; eastLimit=110.86304; projection=WGS84&rft.coverage=northlimit=-66.11607; southlimit=-66.65733; westlimit=109.94019; eastLimit=110.86304; projection=WGS84&rft_rights=This data set conforms to the CCBY Attribution License (http://creativecommons.org/licenses/by/4.0/). Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AAS_4318_GNSSdata when using these data.&rft_subject=imageryBaseMapsEarthCover&rft_subject=planningCadastre&rft_subject=LAND MANAGEMENT&rft_subject=EARTH SCIENCE&rft_subject=HUMAN DIMENSIONS&rft_subject=ENVIRONMENTAL GOVERNANCE/MANAGEMENT&rft_subject=GEOMORPHOLOGY&rft_subject=ALTUS APS3G GNSS RECEIVER&rft_subject=SILL HEIGHTS&rft_subject=GNSS > GNSS RECEIVERS&rft_subject=FIELD SURVEYS&rft_subject=GEOGRAPHIC REGION > POLAR&rft_subject=CONTINENT > ANTARCTICA&rft_place=Hobart&rft.type=dataset&rft.language=English Access the data
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This data set conforms to the CCBY Attribution License (http://creativecommons.org/licenses/by/4.0/). Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AAS_4318_GNSSdata when using these data.

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These data are publicly available for download from the provided URL.

Brief description

Uncorrected GPS/GNSS observational data collected using an Altus APS3G GNSS receiver on a 2m survey pole by Anne Hellie on the 19th and 20th of January, 2018 (UTC time).

The excel file “Uncorrected_data.xlsx” contains the output of eight different data files collected (SILLS to SILLS 7).
The data has been compiled into the worksheet “Uncorrected_data”.
The other worksheets contain copies of the notes from Carlson Surv PC (the software used to collect the
points), along with a lot more metadata.

Using ArcGIS 10.3 and the XtoolsPro extension, “Uncorrected_data” has been made into an ArcGIS shapefile (*.shp) and GoogleEarth *.kml file. Both are named “4318_2018”, with their appropriate extensions.

Note that since these points were collected in autonomous mode (with no RTK or SBAS solutions), these
are uncorrected data points, and have poor accuracy, particularly in the vertical (see the VSDV field for
the vertical standard deviation).

The accuracy of these positions can be substantially improved by differentially correcting/post-processing the data. This can be done with the open source software RTKLIB. Using the Septentrio software (SBF converter), the raw
data files (*.sbf files collected by the Septentrio unit) have been converted into Rinex *.obs files to facilitate this process.
The base station files for the appropriate time period can be downloaded from the
Geoscience Australia Geodesy ftp server. The closest base station (CORS) is located at Casey and known as “cas1”.
ftp://ftp.ga.gov.au/geodesy-outgoing/gnss/data/highrate/2018/

Issued: 2019-09-18

Data time period: 2018-01-19 to 2018-01-20

This dataset is part of a larger collection

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110.86304,-66.11607 110.86304,-66.65733 109.94019,-66.65733 109.94019,-66.11607 110.86304,-66.11607

110.401615,-66.3867

text: northlimit=-66.11607; southlimit=-66.65733; westlimit=109.94019; eastLimit=110.86304; projection=WGS84

Subjects
ALTUS APS3G GNSS RECEIVER | CONTINENT > ANTARCTICA | EARTH SCIENCE | ENVIRONMENTAL GOVERNANCE/MANAGEMENT | FIELD SURVEYS | GEOGRAPHIC REGION > POLAR | GEOMORPHOLOGY | GNSS > GNSS RECEIVERS | HUMAN DIMENSIONS | LAND MANAGEMENT | SILL HEIGHTS | imageryBaseMapsEarthCover | planningCadastre |

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AU-ANL:PEAU : http://nla.gov.au/nla.party-617536

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