IKONOS Stereo Satellite Imagery
Reference stereo products have a horizontal accuracy of 25 meters CE90 and a vertical accuracy of 22 meters LE90 without any Ground Control Points (GCP’s). When reliable GPS derived GCP photo ID control is available for the area to be collected the horizontal and vertical Geospatial accuracy increases to <2.5m horizontal and <1.5m vertical.
IKONOS Stereo Satellite Imagery
(Image Copyright © DigitalGlobe)
IKONOS stereo satellite images have the potential for creating DSM/DEM's. The primary advantage of stereo imagery is the ability to extract vector features and geographic features in 3D such as buildings, roads, manmade structures and other terrain features. This accuracy can be consistently achieved with terrain slope conditions of <20%.
Stereo satellite imagery is especially important for global markets where accurate elevation data is not readily available. Many commercial markets will benefit from stereo imagery and 3D Digital Terrain Models including mapping for oil and gas exploration, mining, engineering and construction, environmental, urban planning, agriculture and forestry.
The three main attributes of IKONOS stereo imagery are 360-degree pointing capability, a base-to-height (B/H) ratio of 0.6 and greater - similar in scope to aerial photography. Stereo products can be produced in either epipolar or map projection and can be acquired at most areas of the World.
Stereo products can be purchased as 11-bit or 8-bit data and are offered in the same accuracy levels as other IKONOS products.
Map projected stereo products are produced in long image strips and are recommended if block adjustment is going to be performed by the user. Long strip images facilitate block adjustment, as the user does not have to contend with small component images.
Resolution restrictions have been relaxed
During June 2014 DigitalGlobe received permission from the US Department of Commerce to collect and sell imagery at the best available resolutions. Additionally, six months after WorldView-3 is operational DigitalGlobe will be permitted to sell imagery at up to 25 cm panchromatic and 1.0 m multispectral GSD. We applaud the US Government’s relaxation of satellite resolution restrictions, as it benefits our customers, and the industry in general.
Tunisia - DEM
Digital Surface Model
DRC and Rwanda, Africa
IKONOS Stereo Imagery Specifications
* Without Ground Control Points (GCP's)
** With Ground Control Points (GCP's) - <0.25m GCP accuracy standards for X, Y, Z
Panchromatic at 0.82 meter at Nadir
526 - 928 nm (Pan)
Multispectral at 3.28 meter at Nadir
Blue, Green, Red, and NIR.
445 - 516 nm (Blue)
506 - 595 nm (Green)
632 - 698 nm (Red)
757 - 853 nm (NIR)
Map projected stereo products offer a choice of UTM, TM, State Plane, Lambert Conformal Conic products are produced in NITF or GeoTIFF format.
0.8 to 1.0 meter resolution (Pansharpened). Resolution depends on the collection geometry of the satellite sensor when image data is acquired.
Elevation angle from ground to sun > 15°, azimuth unrestricted.
Sensor elevation angle > 72° for one image and > 60° for the other.
Less than or equal to 15 % Cloud Cover per AOI
Satellites Currently Operated by DigitalGlobe
- WorldView-4 (0.31m)
- WorldView-3 (0.31m)
- WorldView-2 (0.46m)
- WorldView-1 (0.46m)
- GeoEye-1 (0.46m)
- Pleiades-1A (0.5m)
- Pleiades-1B (0.5m)
- KOMPSAT-3A (0.55m)
- KOMPSAT-3 (0.7m)
- QuickBird (0.65m)
- Gaofen-2 (0.8m)
- TripleSat (0.8m)
- IKONOS (0.82m)
- SkySat-1 (0.9m)
- SkySat-2 (0.9m)
- SPOT-6 (1.5m)
- SPOT-7 (1.5m)
- Other Satellites (2m-20m)