IKONOS ESA archive 2001-08
type: Dataset
keyword: DIF10
keyword: EARTH SCIENCE>LAND SURFACE>LANDSCAPE
keyword: EARTH SCIENCE>LAND SURFACE>TOPOGRAPHY
keyword: EARTH SCIENCE>HUMAN DIMENSIONS>NATURAL HAZARDS
keyword: IKONOS
keyword: OSA
keyword: Orthoimagery
keyword: Landscape
keyword: Topography
keyword: Natural Hazards and Disaster Risk
keyword: VIS (0.40 - 0.75) µm
keyword: NIR (0.75 - 1.30) µm
keyword: Sun-synchronous
keyword: Very High Resolution - VHR (0 - 5) m
keyword: OSA_GEO_1P
keyword: 681-709 km
keyword: Single image: 11.3 km x 11.3 km. Nominal strip: 11 km x 100 km
keyword: Photon/Optical Detectors
keyword: RESTRICTED
keyword: ESA_open_and_free
keyword: IKONOS-2
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description: ESA maintains an archive of IKONOS Geo Ortho Kit data previously requested through the TPM scheme and acquired between 2000 and 2008, over Europe, North Africa and the Middle East. The imagery products gathered from IKONOS are categorised according to positional accuracy, which is determined by the reliability of an object in the image to be within the specified accuracy of the actual location of the object on the ground. Within each IKONOS-derived product, location error is defined by a circular error at 90% confidence (CE90), which means that locations of objects are represented on the image within the stated accuracy 90% of the time. There are six levels of IKONOS imagery products, determined by the level of positional accuracy: Geo, Standard Ortho, Reference, Pro, Precision and PrecisionPlus. The product provided by ESA to Category-1 users is the Geo Ortho Kit, consisting of IKONOS Black-and-White images with radiometric and geometric corrections (1-metre pixels, CE90=15 metres) bundled with IKONOS multispectral images with absolute radiometry (4-metre pixels, CE90=50 metres). IKONOS collects 1m and 4m Geo Ortho Kit imagery (nominally at nadir 0.82m for panchromatic image, 3.28m for multispectral mode) at an elevation angle between 60 and 90 degrees. To increase the positional accuracy of the final orthorectified imagery, customers should select imagery with IKONOS elevation angle between 72 and 90 degrees. The Geo Ortho Kit is tailored for sophisticated users such as photogrammetrists who want to control the orthorectification process. Geo Ortho Kit images include the camera geometry obtained at the time of image collection. Applying Geo Ortho Kit imagery, customers can produce their own highly accurate orthorectified products by using commercial off the shelf software, digital elevation models (DEMs) and optional ground control. Spatial coverage: Check the spatial coverage of the collection on a _$$map$$ https://tpm-ds.eo.esa.int/smcat/IKONOS2/ available on th…
temporal: PeriodOfTime
  start date: 2001-08-01T00:00:00.000Z
  end date: 2001-08-31T23:59:59.999Z
last: https://fedeo.ceos.org/series/eo:organisationName/ESA@ESRIN/IKONOS.ESA.archive/2001/08