Product catalogue
RETIRED Surface Reflectance Euclidean, Spectral and Bray-Curtis Median Absolute Deviation 2.1.0
<b>This record was retired 29/03/2022 with approval from S.Oliver as it has been superseded by eCat 146261 DEA Geometric Median and Median Absolute Deviation (Landsat)</b>
This product provides ‘second order’ statistical techniques that follow from the geometric median, which is useful for environmental characterisation and change detection.
The Median Absolute Deviation (MAD) is a generalisation of the classic one-dimensional statistic for multidimensional applications, and is a measure of variance in a dataset through comparison to the median. It is similar in concept to the way that the standard deviation in statistics can be used to understand variance compared to the mean.
Simple
Identification info
- Date (Publication)
- 2018-11-30T15:03:48
- Date (Revision)
- 2019-08-12T01:39:19
- Date (Revision)
- 2020-04-23T23:43:57
- Date (Superseded)
- 2022-03-29
- Edition
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2.1.0
- Citation identifier
- Product
- Citation identifier
- ga-dataSetURI/Link to be added by administrator
- Cited responsible party
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Role Organisation / Individual Name Details Owner Commonwealth of Australia (Geoscience Australia)
Voice
- Status
- Superseded
- Point of contact
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Role Organisation / Individual Name Details Owner Commonwealth of Australia (Geoscience Australia)
Voice Custodian Commonwealth of Australia (Geoscience Australia)
Voice Point of contact Geoscience Australia - Team Leader, Applications and Systems Support, NEMO
Voice Point of contact Geoscience Australia - Section Leader, Operations Section, NEMO
Voice Point of contact Geoscience Australia - Team Leader, Applications and Systems Support, NEMO
Voice Point of contact Geoscience Australia - Team Leader, Applications and Systems Support, NEMO
Voice Point of contact Geoscience Australia - GA Media Hotline
Voice Point of contact Geoscience Australia - Team Leader, Product Management, Operations Section NEMO
Voice Point of contact Geoscience Australia - Team Leader, Business Systems Development Section, NEMO
Voice
- Topic category
-
- Geoscientific information
Extent
))
Temporal extent
- Time period
- 1986-08-16 2017-07-31
- Maintenance and update frequency
- As needed
- Theme
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EGD
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- Theme
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NEMO
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- Theme
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DEA
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- Keywords
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Published_External
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Resource constraints
- Title
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Creative Commons Attribution 4.0 International Licence
- Alternate title
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CC-BY
- Edition
-
4.0
- Access constraints
- License
- Use constraints
- License
Resource constraints
- Title
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Australian Government Security ClassificationSystem
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
- Language
- English
- Character encoding
- UTF8
Distribution Information
- Distributor contact
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Role Organisation / Individual Name Details Distributor Commonwealth of Australia (Geoscience Australia)
Voice
- OnLine resource
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DEA Geometric Median and Median Absolute Deviation (Landsat)
DEA Geometric Median and Median Absolute Deviation (Landsat)
- Distribution format
-
Resource lineage
- Statement
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The three layers of the TMAD are calculated by computing the multidimensional distance between each observation in a time series of multispectral (or higher dimensionality such as hyperspectral) satellite imagery with the multidimensional median of the time series. The median used for this calculation is the geometric median corresponding to the time series.
The TMAD is calculated over annual time periods on Earth observations from a single sensorby default (such as the annual time series of Landsat 8 observations);however, it is applicable to multi-sensor time series of any length that computing resources can support.
For the purposes of the default Digital Earth Australia product, TMADs are computed per calendar year, per sensor (Landsat 5, Landsat 7 and Landsat 8) from terrain-illumination-corrected surface reflectance data (Analysis Ready Data), compared to the annualgeometric median of that data.
basic_htmlThe three layers of the TMAD are calculated by computing the multidimensional distance between each observation in a time series of multispectral (or higher dimensionality such as hyperspectral) satellite imagery with the multidimensional median of the time series. The median used for this calculation is the geometric median corresponding to the time series.
The TMAD is calculated over annual time periods on Earth observations from a single sensor by default (such as the annual time series of Landsat 8 observations); however, it is applicable to multi-sensor time series of any length that computing resources can support.
For the purposes of the default Digital Earth Australia product, TMADs are computed per calendar year, per sensor (Landsat 5, Landsat 7 and Landsat 8) from terrain-illumination-corrected surface reflectance data (Analysis Ready Data), compared to the annual geometric median of that data.
Metadata constraints
- Title
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Australian Government Security Classification System
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
Metadata
- Metadata identifier
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urn:uuid/fd4c3b7c-b5c6-4c50-9b58-51db8e054fa1
- Title
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GeoNetwork UUID
- Language
- English
- Character encoding
- UTF8
- Contact
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Role Organisation / Individual Name Details Point of contact Geoscience Australia - Client Services
Voice
Type of resource
- Resource scope
- Dataset
Alternative metadata reference
- Title
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Geoscience Australia - short identifier for metadata record with
uuid
- Citation identifier
- eCatId/130482
- Date info (Revision)
- 2019-07-23T06:24:00
- Date info (Creation)
- 2019-07-23T06:24:00
Metadata standard
- Title
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AU/NZS ISO 19115-1:2014
Metadata standard
- Title
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ISO 19115-1:2014
Metadata standard
- Title
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ISO 19115-3
- Title
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Geoscience Australia Community Metadata Profile of ISO 19115-1:2014
- Edition
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Version 2.0, September 2018
- Citation identifier
- https://pid.geoscience.gov.au/dataset/ga/130301