Large Area Collections With WorldView-2 & The Advantages of Local Tasking

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Presentation by Simon Casey of EUSI about the local tasking possibilities of WorldView-2 and successful image acquisition for agricultural purposes.

Presentation by Simon Casey of EUSI about the local tasking possibilities of WorldView-2 and successful image acquisition for agricultural purposes.

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  • 1. Large Area Collections With WorldView-2 & The Advantages of Local TaskingCAPIGI 2011 Simon CaseyAmsterdam, The Netherlands Sales Manager4 - 6 April 2011 European Space Imaging
  • 2. Presentation Themes…1. EDAF & Local Tasking2. The WorldView-2 Satellite3. Large area collections4. 8-Band Agricultural Applications 2
  • 3. Background ExperienceEstablished in October 2002 in MunichIn March 2003 EUSI started operating the German Regional Operations Center (GEROC) for IKONOSSince April 2010 EUSI is operating the European Direct Access Facility (EDAF) for WorldView-2Both facilities are at the German Aerospace Center (DLR) near Munich have local tasking, data reception, and processing 3
  • 4. The new EDAF at DLR
  • 5. Home of the EDAF 5
  • 6. What is Local Tasking? 6
  • 7. European Local Tasking4/13/2011
  • 8. Advantages of Local Tasking1. Feedback during imaging planning last minute information incorporated into collection plan2. Real-time weather information used up to minutes prior to pass3. Very detailed imaging planning possible up to 4 hrs spent per pass to optimize collection plan 8
  • 9. ½ hr prior to pass cloudy! Automatically scheduled cloudy! images  All images cloudy! cloudy! cloudy! 9
  • 10. ½ hr prior to pass Manually scheduled scheduled images cloud free  All images cloud free! scheduled cloud free scheduled cloud free scheduled cloud free 10
  • 11. 2. Effect of Real-Time WeatherAverage collection results over Europe using different levelsof weather information:• No weather forecast 30 % good 70 % bad images• Weather forecast files 50 % good 50 % bad images• Real-time weather 80 % good 20 % bad images 11
  • 12. WorldView-2WorldView-2 at the Ball Aerospace factory
  • 13. WorldView-2 Launch from Vandenberg AFB 8 October 2009Full operational capability 4 January 2010
  • 14. WorldView-2 • Very high resolution •46 cm* panchromatic at nadir • The most spectral diversity commercially available •1.84 m* resolution at nadir •4 standard colors: blue, green, red, near-IR1 •4 new colors: coastal, yellow, red edge, and near-IR2 • Highly accurate geo-location accuracy • Typically ~5m (depending on terrain) • High capacity over a broad range of collection types •16.4 km width imaging swath (wider than any competitor) •Bi-directional scanning •Rapid retargeting using Control Moment Gyros (>2x faster than any competitor) •2199 gigabits on-board storage •Frequent revisits at high resolution enabled by higher altitude •1.1 days at 1 m GSD or less •3.7 days at 20° off-nadir or less (52 cm GSD)* Distribution and use of imagery at better than .50 m GSD pan and 2.0 m GSD multispectral is subject to prior approval by the U.S. Government. 14
  • 15. Flexible Collection Units Single shots – 16 x 16 kmMultiple & long strips (16 km wide)– Up to several hundreds of km long– Up to 7 strips next to each other Arbitrary alignment – North-South – East-West – Diagonal
  • 16. Single Pass Collection Example Portugal SpainArea Collected in 5 Strips collected Single Pass over Portugal / ~10,000 km2 Spain 30 May 2010
  • 17. Single Pass Collection Example
  • 18. CwRS 2010 with WV-2 1 pass collection9 sites inRomania13,800 km2Very shortcollectionwindows:16 – 20 days
  • 19. WorldView-2 Additional 4 Spectral Bands Band DescriptionCoastal Band This band supports vegetation identification and(400-450 nm) analysis, and supports bathymetric studies based upon its chlorophyll and water penetration characteristics. Also, this band is subject to atmospheric scattering and will be used to investigate atmospheric correction techniques.Yellow Band Used to identify "yellow-ness" characteristics of targets,(585-625 nm) important for vegetation applications. Also, this band will assist in the development of "true-color" hue correction for human vision representation.Red Edge Band Aids in the analysis of vegetative condition. Directly rela-(705-745 nm) ted to plant health revealed through chlorophyll production.Near Infrared (IR) 2 Band This band overlaps the NIR 1 band but is less affected by(860-1040nm) atmospheric influence. It supports vegetation analysis and biomass studies.
  • 20. Crop Identification and Acreage Estimation Field Boundary Extraction Cotton Wheat Tomato Alfalfa Bare soil Garlic Pistachio Sunflower Others
  • 21. Agricultural Applications Quantify human Quantify health of sports Determine premium production encroachment into wetlands turf and urban forests areas in wine grapesDense Vegetation GVI GVI Color Index 95-100 90-94 85-89 80-84 75-79 70-74 65-69 60-64 55-59 50-54 Identify irrigation Monitor strawberry Resolve fertility and soil problems 45-49 40-44 35-39 problems in grapes production in avocados 30-34 25-29 20-24 15-19 10-14 5-9 0-4 Bare Soil