6/12/2014DigitalGlobe Proprietary1 An Overview of WorldView System Racurs IX International...

04/11/23 DigitalGlobe Proprietary 1

An Overview of WorldViewAn Overview of WorldView System System

RacursRacursIX International Scientific and Technical ConferenceIX International Scientific and Technical Conference

October 6, October 6, 20092009

Pawel ZiembaPawel Ziemba


DigitalGlobe Current Satellites

QuickBird

WorldView-1

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Most Advanced Satellite Constellation

Swath WidthSwath Width

Avg. RevisitAvg. Revisit

Slew TimeSlew Time

Spectral BandsSpectral Bands

ResolutionResolution

DigitalGlobe SatellitesDigitalGlobe Satellites

16.5 km16.5 km

2.4 days2.4 days

62 seconds62 seconds

Pan + 4 MSPan + 4 MS

60 cm60 cm

QuickBirdQuickBird

17.6 km17.6 km

1.7 days1.7 days

9 seconds9 seconds

PanPan

50 cm50 cm

WorldView - 1WorldView - 1

16.4 km16.4 km

1.1 days1.1 days

9 seconds9 seconds

Pan + 8 MSPan + 8 MS

50 cm50 cm

WorldView-2 (Q3-09)WorldView-2 (Q3-09)

CollectionCollection 210,000 km2 per day210,000 km2 per day 750,000 km2 per day750,000 km2 per day 950,000 km2 per day950,000 km2 per day

*Accuracy*Accuracy 25M CE9025M CE90 6.5M CE906.5M CE90 TBDTBD

*At nadir on flat terrain

Aggregate capacity of nearly 2,000,000 km² per day with intraday revisits


WorldView-2 Has Completed Thermal-Vacuum Testing;On Schedule for Launch Sep/(Early Oct) 2009

6

WorldView-2 Is The First Privately-Funded Next-Gen Satellite In The Industry

77

Capacity and CoverageCapacity and CoverageCapacity and CoverageCapacity and Coverage


Most Advanced Satellite Constellation

Aggregate Capacity of 1,910,000 km2 per day – Intraday revisits-highest commercial resolution

Faster, Broader World Coverage together with Satellite Collection Redundancy

WorldView-2

Q3-2009 with intra-day constellation revisit8-Band Multispectral

Panchromatic950,000 km2 per day

WorldView-1

Leading Collection Rates

Panchromatic750,000 km2 per day

QuickBird

High Operational Excellence

4-Band MultispectralPanchromatic

210,000 km2 per day


DG Constellation Comparison (2009)


Pan Pan+MS TotalQB + WV1 754,000 180,000 934,000

QB + WV1 + WV2(Pan) 2,511,690 190,000 2,701,690

QB + WV1 + WV2(Pan+8MS) 1,138,540 1,104,950 2,243,490

Mono StereoDigitalGlobe (WV1 or WV2, Pan) – sq kms/pass 27,000 11,800

RevisitQB + WV1 + WV2 (days) 0.5


What does that really mean??


ImageLibrary – Over 800 Million Square Kilometers of Submeter Coverage

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Tasking & AgilityTasking & AgilityTasking & AgilityTasking & Agility


Slew Time - Agility Comparisons

WorldView-1 and WorldView-2 have:

Control Moment Gyros (CMGs) to provide an acceleration more than 10X better than the competition

WorldView-1 and WorldView-2 have:

Control Moment Gyros (CMGs) to provide an acceleration more than 10X better than the competition

Better Agility• Improves collection efficiency• Permits rapid collection of point

targets and stereo• Increases imaging capacity

Better Agility• Improves collection efficiency• Permits rapid collection of point

targets and stereo• Increases imaging capacity

9 seconds

300 km

WorldView-1

~400 km

WorldView-2

9 seconds


Entire North/South Korean Border captured in one pass


DigitalGlobe’s Coverage

North Korea Missile LaunchApril 5, 2009

DigitalGlobe’s WorldView-1 satellite imaged the flight of a North Korean rocket soon after its launch from the Musudan-ri launch facility.


North Korea LaunchMusudan-ri, North Korea

WorldView-1 Image Date: April 5, 2009 Image Time: 11:31:16 Local

NRocket in Flight

Smoke Cloud FromRocket Launch


North Korea LaunchMusudan-ri, North KoreaWorldView-1 Image Date: April 5, 2009 Image Time: 11:31:16 Local

N

Cloud of Smoke From Rocket

Launch

Cloud of Smoke From Rocket

Launch

Launch Pad(See next slide)Launch Pad(See next slide)


Brush Fire FromLaunch


N

Field Burned DaysBefore The Launch



Rocket Contrail

N

Rocket in Flight

Sensor Flare

U’nha 2 launch vehicle with the Kwangyongsong 2 (Bright Lodestar 2) satellite

(According to globalsecurity.org)

2020

AccuracyAccuracyAccuracyAccuracy

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Accuracy Comparison

2222

Accuracy Comparison

2323

Accuracy Comparison

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Spectral CharacteristicsSpectral CharacteristicsSpectral CharacteristicsSpectral Characteristics


WV2 Carries Unique Spectral Bands

New MS Bands


QBPan 450-900MSI 450-520 520-600 630-690 760-900

WV1 400-900

WV2Pan 450-800MSI 400-450 450-510 510-580 585-625 630-690 705-745 770-895 860-1040


WorldView2 4 New Bands

Coastal• chlorophyll absorption, blue light scattering, water depth, “true-color”; will

support coastline water depth studies based upon its chlorophyll and water penetration characteristics. Also, this band is subject to atmospheric scattering and will be investigated to examine atmospheric correction techniques.

Yellow• will be used to identify "yellow-ness" characteristics of targets, important for

vegetation and turbidity applications. Also, this band will assist in the development of "true-color" hue correction for human vision representation.

Red Edge• aids in the analysis of vegetation and vegetative condition. Directly related

to plant health revealed through chlorophyll production.NIR2• overlaps the NIR1 band may help with atmospheric correction, supports

vegetation analysis and biomass studies.


Coastal Mapping

• Accuracy– 30 meter depth– 1-5 meter geolocation– 2-5 meter post spacing

• Spatial Resolution– 2 meter GSD

• Geographic Coverage– Tropical and sub-tropical regions– Clear lakes– Clear, calm waters


Land Use/Land Cover Identification

RGB = NIR1,Red Edge, RedPocomoke, MD

Red Edge

Yellow Band

Additional spectral bands available with WorldView-2 provide additional separability (improved accuracy) in the characteristics and identification of Land Use and Land Cover features.

See following slide…


Improved Classification Accuracies

QBOverall Accuracy 47.3%

WV2Overall Accuracy 76.5%

Spectral Classification comparison applying the same generic signature library to both QB2 and WV2, with no corrections applied, using the same classification method.

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Benefits of WorldView-2 Four New Bands

HYDICE FR1Imagery with camouflaged targets

Brown Camo Netting

Green Camo Netting

Green Camo Painted Military Vehicles


NDVI-basedMisses the green Camo Nets

Red Edge-basedHighest Contrast Results

NDVI Red Edge

Benefits of WorldView-2 Four New Bands


Retina’s Color-SensitiveCone Cells

UV C B G YY R RE NIR

RedGreenBlue < Traditional B,G,R,Nir Sensor

True Human Color


Benefit of 8 Bands – Color Accuracy

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Truth

4 Bands

Truth

4 Bands


Benefit of 8 Bands – Color Accuracy

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Truth

WV-2

Truth

WV-2

and ITT Proprietary


Breaking News – A European Groundstation


Questions?Pawel Ziemba

[email protected]

+48 607 604 007

6/12/2014DigitalGlobe Proprietary1 An Overview of WorldView System Racurs IX International...

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