Medium Resolution Satellite Imagery of Australia from DMCii

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The Disaster Monitoring Constellation (DMC) is a constellation of satellites (presently eight) owned by various countries, operating together to provide frequent observations of the Earth for monitoring natural disasters.

The DMC satellites operate in the visible to near-infra-red part of the spectrum, which makes them very useful for crop and forest monitoring as well as general Earth observation.

DMC satellites have been used in emergency response in Australia, providing daily images of the progress of floods through Queensland and New South Wales during the February 2012 flood event.

DMC imagery is also used to augment data acquired from the Landsat series of satellites. The DMC SLIM-6-22 sensor has a slightly higher spatial resolution of 22 metres and a higher revisit rate of four days, compared to Landsat 5 TM sensor with a spatial resolution of 30 metres and a revisit rate of 16 days. In addition the dual sensor layout on the satellites allows a 620 kilometre wide swath to be acquired in a single pass. DMC satellites have three spectral bands: green, red and near infra-red, where seven bands are available from Landsat 5 TM data.

Comparisons of the current generation of DMC satellites with Landsat-7 ETM+ have demonstrated that the calibration accuracy is within 1 - 3%. To maintain the calibration the DMC satellites are routinely cross-calibrated with Landsat-7 ETM+.

Landsat-5 was a key source of imagery throughout the world, until the acquisitions of imagery was suspended in 2011. To address the shortfall in access to medium resolution data, Geoscience Australia has acquired large regional coverage of DMC data from DMC Imaging International (DMCii).

DMCii data over Australia is available through the Geoscience Australia Sales Centre. All data is available at cost of transfer. The complete package is available from Geoscience Australia for $150 +GST on a 1 terabyte USB hard drive. To order email sales@ga.gov.au and for technical support go to www.dmcii.com External site link. A preview of the data can be found by going to the Earth Observation Image Server.

All images are available with two levels of processing, path (L1R) and orthorectified (L1T) in GeoTIFF format. The imagery is available as a packaged product and new imagery will be added when it becomes available.

The maps below provide an overview of the geographic extents of the available data.

DMC Satellite Imagery covering the coastal areas of Australia with a small portion missing on the WA/SA Border and all of central Australia. The data for Northern Australian down to Brisbane was acquired from August to October 2012. All other data was acquired from December 2011 to March 2012.

DMC Satellite Imagery covering the coastal areas of Australia with a small portion missing on the WA/SA Border and all of central Australia. These data were acquired between May to October 2011.

Further technical information is available from DMC International Imaging Ltd External site link.

2011 Continental Coverage

DMC Satellite imagery covering the whole of the Australian Continent and Tasmania acquired 2011.

Licensing of Data

All data will be available under the Creative Commons Attribution 3.0 Australia licence with attribution to DMC International Imaging Ltd. The current full licence is attached to this Official Order and the full legal code can be found at: http://creativecommons.org/licenses/by/3.0/legalcode External site link.

The human-readable summary is available at: http://creativecommons.org/licenses/by/3.0/ External site link.

The licence requires users of this data to attribute the data to DMCii and should include the following information:

DMC International Imaging Ltd. (DMCii) 2012 – Creative Commons Attribution 3.0 Australia (CC BY 3.0).

Topic contact: sales@ga.gov.au Last updated: July 31, 2013