WorldView-3 is a commercial satellite designed for Earth observation. At the time of launch, the WorldView-3 satellite had the highest spatial resolution among all commercial remote sensing satellites: up to 31 cm in the panchromatic , 1.24 m in the multispectral and 3.7 m in the middle infrared range [2] [3] [4] [5] .
| Worldview-3 | |
|---|---|
 WorldView-3 launch on Atlas V rocket [1] . | |
| Customer |  Digital globe |
| Manufacturer | Ball Aerospace & Technologies |
| Operator | |
| Satellite | Land |
| Launch pad | Base Vandenberg |
| Launch vehicle | Atlas V |
| Launch | August 13, 2014 |
| Entry into orbit | August 13, 2014 |
| Flight duration | 2 months |
| NSSDC ID | 2014-048A |
| SCN | 40115 |
| Specifications | |
| Weight | 2800 kg |
| The term of active existence | 7 years |
| Elements of the orbit | |
| Orbit type | solar synchronous |
| Semimajor axis | 6991 km |
| Mood | 98.0 ° |
| Circulation period | 97.0 minutes |
| Orbit height | 620 km |
| Target equipment | |
| Spectral band | VNIR mode |
| Image resolution | SWIR mode - 3.72 m, CAVIS mode - 30 m |
| Project site | |
Content
Brief characteristics of the satellite
The WorldView-3 spacecraft (hereinafter referred to as the SC) is intended for shooting in the panchromatic and 8-channel multispectral modes [2] . The shooting equipment is completely similar to that installed on the WorldView-2; the diameter of the main mirror is 1.1 meters [6] . The accuracy of the plan in the plan is 6.5 m CE90 or 4 m (RMS) without additional correction of the planned coordinates for ground control points. WorldView-3 KA shoots in three modes [2] [7] :
- VNIR (Visible and Near Infrared - multispectral visible and near infrared range) - the main instrument, 8 channels, 6 of them - the visible range (violet, blue, green, yellow, red, extreme red) and 2 - near infrared (near-IR1 Near-IR2) [6]
- SWIR (Shortwave Infrared - medium infrared range) - allows you to shoot through haze, fog, smog, dust, smoke, fog and clouds; 8 channels) and
- CAVIS (clouds, aerosols, vapors, ice, snow - clouds, aerosols, vapors, ice, snow) - allows for the correction of atmospheric distortions; 12 channels.
WorldView-3 satellite is one of the 6 satellites of the DigitalGlobe group of companies ( QuickBird , WorldView-1 , WorldView-2 , WorldView-3, GeoEye , IKONOS ), the total shooting performance of which is about 4 million km² per day [8] .
Application
The highest spatial resolution and extended spectral range allows us to solve many problems, including mapping, monitoring of changes in the earth's surface, agricultural monitoring, etc. The new short-wave shooting mode (SWIR) will significantly help with complex modeling and mapping of rocks, soils, and soils. Potential applications include: geological mapping, environmental control and monitoring of natural disaster areas, exploration of oil fields, other minerals and geothermal resources, as well as the assessment of other non-renewable resources [9] .
SWIR can also be used to study fires inaccessible for shooting in the visible range due to smoke [10] [11]
In addition to NIR and SWIR sensors, which provide shooting in 17 channels, the WorldView-3 satellite is also equipped with a CAVIS sensor (short for Cloud, Aerosol, Water Vapor, Ice, Snow - cloudiness, aerosols, water vapor, ice, snow). Its main purpose is to measure the characteristics of the components of the atmosphere necessary to improve the quality of images by making appropriate amendments [9] .
See also
- Digitalglobe
- Worldview-4
Notes
- ↑ Vandenberg Air Force Base - Media Gallery (link not available) . Archived December 18, 2014.
- ↑ 1 2 3 Description of WorldView-3 from the Earth Observation Portal
- ↑ Qihao Weng. 4.2.3 High Spatial Resolution Optical Sensors // Global Urban Monitoring and Assessment through Earth Observation . - S. 55-56.
- ↑ ULA Atlas V launches WorldView-3 satellite out of Vandenberg // NASASpaceflight, 2014-08 “WorldView-3 is expected to add to DigitalGlobe's fleet by providing a higher imaging resolution than any other commercial satellite.”
- ↑ Atlas 5 Rocket Lofts DigitalGlobe's WorldView-3 Satellite (inaccessible link - history ) . // SpaceNews, Aug. 13, 2014 "No commercial competitor to DigitalGlobe is able to sell imagery this sharp. ... the higher-resolution offer will enable it to attack the global market for aerial imagery,"
- ↑ 1 2 Harris |
- ↑ An Overview of the WorldView-3 Sensor // Digital Globe, Geospatil WordFum 2014
- ↑ Executive Vice President and Chief Technology Officer W. Scott on the company's capabilities (inaccessible link)
- ↑ 1 2 Development trends of the commercial sector of optical space imaging // Geomatika 2014 No. 1
- ↑ New High-Res Satellite Sees Through Smoke to Image Fires // Wired, 2014-09-04
- ↑ WorldView-3 Satellite Sees Wildfire Beneath the Smoke // NBC, September 3 2014 “In the visible spectrum, WorldView-3 could see little more than the smoke rising from the blaze. But the color-coded view from three of the SWIR sensor's eight infrared bands shows exactly how far the fire had spread. ”
Literature
Links
- DigitalGlobe launches super-sharp WorldView-3 Earth imager // BBC, August 13, 2014
- Satellite: WorldView-3 ; Instrument: WV110 in the World Meteorological Organization (WMO) database