CSDA Vendor - Maxar
NASA has acquired commercial datasets from the Maxar constellation since the year 2000.
Maxar Intelligence, Inc. (formerly DigitalGlobe) was one of the vendors selected for evaluation in the original Commercial Satellite Data Acquisition (CSDA) program pilot. CSDA distributes data acquired by the Maxar constellation, including: WorldView-1, WorldView-2, WorldView-3, WorldView-4, GeoEye-1, QuickBird, and IKONOS. The Maxar constellation offers a unique catalog of very-high-resolution data products with resolutions as low as 31 cm per pixel, from the WorldView-3 Panchromatic band.
For specifications on individual Maxar instruments, please see the Maxar Commercial Data listing at the bottom of this page.
Authorized Data Use and Users
NASA-acquired Maxar data are available to all NASA-funded researchers. Data requests must be approved by CSDA.
End User License Agreements (EULAs)
- The Commercial Data/Imagery End User License Agreements Fact Sheet covers all Maxar imagery except Worldview-4 and IKONOS
- NextView Imagery License for IKONOS imagery
- Maxar EULA for Worldview 4 imagery
Obtaining Data
Maxar data are available to USG funded investigators through the EOCL contract. This contract permits access to archived declassified imagery as well as new tasking acquisitions. CSDA provides support to NASA funded investigators in acquiring data. In addition, some of the methods provided may be followed without the need for CSDA assistance. Details on methods to discover and access these data are as follows:
Archived Data
The following 3 methods are available to investigators for accessing Maxar archive imagery:
- CSDA archive: To access and obtain Maxar data from CSDA, first register by completing the CSDA Program Authorization form.
- Once approved, users will be contacted via email, and can then submit a request using the Maxar Data Request Form. The Maxar’s Discover Tool allows users to search and discover the entirety of Maxar’s data holdings. Once you have generated search results in the tool, you can capture the catalog IDs for your order. In the tool, use the image checkboxes in your results list to select the images you want, then click the blue ‘Actions’ button below the results list and select the 'Share by email' option. This will pop up a window with an ‘Order Summary’. You can then copy the list of Catalog IDs from the summary and paste them into the CSDA Maxar Data Request Form.
- Approved users can also directly access a very large subset of Maxar’s data holdings for immediate download from Earthdata (search.earthdata.nasa.gov/search), a separate login can be provided to access over 12.4 million granules.
- USGS Earth Explorer (https://earthexplorer.usgs.gov/) *: US Government-funded investigators may register and access the USGS Commercial Data Purchase Imagery Archive available within the Earth Explorer https://www.usgs.gov/centers/eros/science/usgs-eros-archive-commercial-satellites-commercial-data-purchases-cdp-imagery
- Maxar G-EGD (https://evwhs.digitalglobe.com/)*: To access and obtain Maxar data, go to the Global Enhanced GEOINT Delivery (GEGD) website. If you do not have an account, click on the ‘Get Registered’ link. Note that this service is provided by NGA for government affiliated investigators and libraries restricted to 600 GB at one time.
Tasking New Acquisitions
The following 2 methods are available to investigators for tasking Maxar satellites:
- The CSDA program can support NASA-funded investigators that have been approved to access Maxar data (CSDA Program Authorization) in the acquisition of data not found in the Maxar imagery archives (https://discover.maxar.com/). CSDA relies on the USGS CRSSP Imagery Derived Requirements (CIDR) System to submit tasking requests. Once these data are provided, they are staged for the user to download. Acquisition and delivery of data may take multiple weeks or longer to be completely fulfilled with users notified as progress is made. Please fill out the CSDA Maxar Data Request Form with the desired tasking information in order to initiate the CSDA supported tasking fulfillment process.
- US Government-funded investigators may directly submit new data acquisitions using the USGS CIDR System, see https://www.usgs.gov/centers/eros/science/crssp-imagery-derived-requirements-cidr-tool-help-document. CIDR is linked to the USGS EarthExplorer and users must have and EarthExplorer account and register for access to commercial data.*
*For contractors and NASA-funded investigators to register for CIDR or G-EGD access, a U.S. Government Civil Servant (CS) signature or contact information must be provided. It is recommended that this be the contracting official. For NASA-funded investigators, a CSDA program CS can be this sponsoring official upon confirmation of status. Please fill out the CSDA Program Authorization form and indicate the need for a CSDA Program sponsor in the detailed description box in the form.
For additional issues or questions related to CSDA processes, users may contact us at support-csda@nasa.gov .
Copyright
Data products and derivatives for imagery must contain copyright markings as specified below, where YYYY is the year of the image acquisition.
For all instruments except WorldView-4 and IKONOS: ©YYYY, Maxar, USG Plus
For IKONOS: ©YYYY, Maxar, NextView
For Worldview-4:
- Data products: "© Maxar Intelligence, Inc YYYY. All rights reserved."
- Derivatives: "Includes copyrighted material of Maxar Intelligence, Inc. All rights reserved."
Note that users of Maxar data must obtain approval for release of Maxar to the public (publications, presentations, etc.) from the National Geospatial-Intelligence Agency (NGA). Please complete the Maxar Public Use Form before using the imagery in the public domain.
CSDA Acknowledgment
To help CSDA identify your publications, we request that you include the following acknowledgment when publishing work created using these data:
"This work utilized data made available through the NASA Commercial Satellite Data Acquisition (CSDA) Program."
Current Research and Findings Using Maxar Data
Research
Erik C Duncan
2023
Optimizing WorldView-2, -3 cloud masking using machine learning approaches
J.A. Caraballo-Vega
2023
Spectral Unmixing And Mapping Of Coral Reef Benthic Cover With Deep Learning
Rohan Zeng
2022
Findings
Findings are statements showing how these data may be applied and include links to more information about these applications.
WorldView-3 imagery used to quantify within-field productivity differences
DEMs derived from Worldview data used for energy balance monitoring of glaciers in rugged terrain
Documentation for CAVIS sensor was found to be inadequate
Adequate for mapping the percent cover of the submerged aquatic vegetation
Classified WV-2 imagery up to 83% accuracy for coral reef assessment
Maxar Commercial Data
View attributes and values for individual Maxar instruments.
DigitalGlobe Worldview-4 Specifications
| Attribute | Value |
|---|---|
| Orbit | Altitude: 617 km Type: Sun Synchronous, 10:30 a.m. descending Node Period: 97 min. |
| Life | Estimated service life: 10 to 12 years |
| Spacecraft size and aperture | Size: 5.3 m (17.7 ft) tall x 2.5 m (8 ft) across 7.9 m (26 ft) across deployed solar arrays Aperture: 1.1m |
| Sensor bands | Panchromatic: 450–800 nm 4 Multispectral: Red: 655–690 nm Green: 510–580 nm Blue: 450–510 nm Near-IR: 780–920 nm |
| Sensor resolution (or GSD, ground sample distance; off-nadir is geometric mean) | Panchromatic Nadir: 0.31 m 20° Off-Nadir: 0.34 m 56° Off-Nadir: 1.00 m Multispectral Nadir: 1.24 m 20° Off-Nadir: 1.38 m 56° Off-Nadir: 4.00 m |
| Dynamic range | 11-bits per pixel |
| Swath width | At nadir: 13.2 km |
| Attitude determination and control | Type: 3-axis Stabilized Actuators: Control Moment Gyros (CMGs) Sensors: Star trackers, precision IRU, GPS |
| Pointing accuracy and knowledge | Accuracy: 170 m at 40 off-nadir Knowledge: Supports geolocation accuracy below |
| Retargeting agility | Time to Slew 200 km: 10.6 sec |
| Onboard storage | 3200 Gb solid state with EDAC |
| Communications | Image and ancillary data: 800 Mbps X-band Housekeeping: 120 kbps real time, X-band Command: 64 kbps S-band |
| Max contiguous area collected in a single pass (30° off-nadir angle) | Mono: 66.5 km x 112 km (5 strips) Stereo: 26.6 km x 112 km (2 pairs) |
| Revisit frequency (at 40°N latitude) | 1 m GSD: < 1.0 day Total constellation > 4.5 accesses/day |
| Geolocation accuracy (CE90) | Predicted < 5 m CE90 without ground control |
| Capacity | 680,000 km2 per day |
DigitalGlobe Worldview-3 Specifications
| Attribute | Value |
|---|---|
| Orbit | Altitude: 617 km Type: Sun synchronous, 10:30 a.m. descending node Period: 97 min. |
| Life | Spec Mission Life: 7.25 years Estimated service life: 10 to 12 years |
| Spacecraft size, mass and power | Size: 5.7 m (18.7 ft) tall x 2.5 m (8 ft) across 7.1 m (23 ft) across deployed solar arrays Mass: 2800 kg (6200 lbs) Power: 3.1 kW solar array, 100 Ahr battery |
| Sensor Bands | Panchromatic: 450–800 nm |
| 8 Multispectral: Coastal: 397–454 nm Blue: 445–517 nm Blue: 445–517 nm Green: 507–586 nm Yellow: 580–629 nm Red: 626–696 nm Red Edge: 698–749 nm Near-IR1: 765–899 nm Near-IR2: 857–1039 nm | |
| 8 SWIR Bands: SWIR-1: 1184–1235 nm SWIR-2: 1546–1598 nm SWIR-3: 1636–1686 nm SWIR-4: 1702–1759 nm SWIR-5: 2137–2191 nm SWIR-6: 2174–2232 nm SWIR-7: 2228–2292 nm SWIR-8: 2285–2373 nm | |
| 12 CAVIS Bands: Desert Clouds: 405–420 nm Water-3: 930–965 nm Aerosol-1: 459–509 nm Green: 525–585 nm Aerosol-2: 635–685 nm Water-1: 845–885 nm Water-2: 897–927 nm NDVI-SWIR: 1220–1252 nm Cirrus: 1365–1405 nm Snow: 1620–1680 nm Aerosol-1: 2105–2245 nm Aerosol-2: 2105–2245 nm | |
| Sensor resolution (or GSD, Ground Sample Distance; off-nadir is geometric mean) | Panchromatic nadir: 0.31 m 20° off-nadir: 0.34 m Multispectral nadir: 1.24 m 20° off-nadir: 1.38 m SWIR nadir: 3.70 m 20° off-nadir: 4.10 m CAVIS nadir: 30.00 m |
| Dynamic range | 11-bits per pixel Pan and MS; 14-bits per pixel SWIR |
| Swath width | At nadir: 13.1 km |
| Attitude determination and control | Type: 3-axis Stabilized Actuators: Control Moment Gyros (CMGs) Sensors: Star trackers, precision IRU, GPS |
| Pointing accuracy and knowledge | Accuracy: <500 m at image start/stop Knowledge: Supports geolocation accuracy below |
| Retargeting agility | Time to Slew 200 km: 12 sec |
| Onboard storage | 2199 Gb solid state with EDAC |
| Communications | Image and Ancillary Data: 800 and 1200 Mbps X-band Housekeeping: 4, 16, 32, or 64 kbps real time, 524 kbps stored, X-band Command: 2 or 64 kbps S-band |
| Max contiguous area collected in a single pass (30° off-nadir angle) | Mono: 66.5 km x 112 km (5 strips) Stereo: 26.6 km x 112 km (2 pairs) |
| Revisit frequency | 1 m GSD: <1.0 day |
| (at 40°N Latitude) | 4.5 days at 20° off-nadir or less |
| Geolocation accuracy (CE90) | Predicted <3.5 m CE90 without ground control |
| Capacity | 680,000 km2 per day |
DigitalGlobe Worldview-2 Specifications
| Attribute | Value |
|---|---|
| Orbit | Altitude: 770 km Type: Sun synchronous, 10:30 a.m. descending node Period: 100 min. |
| Mission Life | 10-12 years, including all consumables and degradables (e.g., propellant) |
| Spacecraft Size, Mass and Power | 5.7 m (18.7 ft) tall x 2.5 m (8 ft) across 7.1 m (23 ft) across the deployed solar arrays 2615 kg (5765 lbs) 3.2 kW solar array, 100 Ahr battery |
| Sensor Bands | Panchromatic: 450–800 nm 8 Multispectral: Coastal: 400–450 nm Blue: 450–510 nm Green: 510–580 nm Yellow: 585–625 nm Red: 630–690 nm Red Edge: 705–745 nm Near-IR1: 770–895 nm Near-IR2: 860–1040 nm |
| Sensor Resolution | Panchromatic: 0.46 m GSD at nadir, 0.52 m GSD at 20° off-nadir Multispectral: 1.85 m GSD at nadir, 2.07 m GSD at 20° off-nadir |
| Dynamic Range | 11-bits per pixel |
| Swath Width | 16.4 km at nadir |
| Attitude Determination and Control | 3-axis stabilized Actuators: Control Moment Gyros (CMGs) Sensors: Star trackers, solid state IRU, GPS |
| Pointing Accuracy and Knowledge | Accuracy: < 500 m at image start and stop Knowledge: Supports geolocation accuracy below |
| Retargeting Agility | Time to Slew 200 km: 10 sec |
| Onboard Storage | 2199 Gb solid state with EDAC |
| Communications | Image and Ancillary Data: 800 Mbps X-band Housekeeping: 4, 16, or 32 kbps real-time, 524 kbps stored, X-band Command: 2 or 64 kbps S-band |
| Max Contiguous Area Collected in a Single Pass (30° off-nadir angle) | Mono: 138 x 112 km (8 strips) Stereo: 63 x 112 km (4 pairs) |
| Revisit Frequency (at 40°N Latitude) | 1.1 days at 1 m GSD or less 3.7 days at 20° off-nadir or less (0.52 m GSD) |
| Geolocation Accuracy (CE90) | Demonstrated < 3.5 m CE90 without ground control |
| Capacity | 1 million km2 per day |
DigitalGlobe Worldview-1 Specifications
| Attribute | Value |
|---|---|
| Orbit | Altitude: 496 km Type: Sun synchronous, 10:30 a.m. descending node Period: 95 min. Altitude: 496 km Type: Sun Synchronous. 1:30 p.m. descending node Period: 95 min. |
| Mission Life | 10-12 years, including all consumables and degradables (e.g., propellant) |
| Spacecraft Size, Mass and Power | 3.6 m (12 ft) tall x 2.5 m (8 ft) across 7.1 m (23 ft) across the deployed solar arrays 2290 kg (5038 lbs) 3.2 kW solar array, 100 Ahr battery |
| Sensor Bands | Panchromatic: 400–900 nm |
| Sensor Resolution | 50 cm Ground Sample Distance (GSD) at nadir 55 cm GSD at 20° off-nadir |
| Dynamic Range | 11-bits per pixel |
| Swath Width | 17.7 km at nadir |
| Attitude Determination and Control | 3-axis stabilized Actuators: Control Moment Gyros (CMGs) Sensors: Star trackers, solid state IRU, GPS |
| Pointing Accuracy and Knowledge | Accuracy: <500 m at image start and stop Knowledge: Supports geolocation accuracy below |
| Retargeting Agility | Time to Slew 200 km: 10 sec |
| Onboard Storage | 2199 Gb solid state with EDAC |
| Communications | Image and Ancillary Data: 800 Mbps X-band Housekeeping: 4, 16, or 32 kbps real-time, 524 kbps stored, X-band Command: 2 or 64 kbps S-band |
| Max Contiguous Area Collected in a Single Pass | Mono: 111 x 112 km (6 strips) |
| (30° off-nadir angle) | Stereo: 51 x 112 km (3 pairs) |
| Revisit Frequency | 1.7 days at 1 m GSD or less |
| (at 40°N Latitude) | 5.4 days at 20° off-nadir or less (0.55 m GSD) |
| Geolocation Accuracy (CE90) | Demonstrated <4.0 m CE90 without ground control |
| Capacity | 1.3 million km2 per day |
DigitalGlobe Ikonos Specifications
| Attribute | Value |
|---|---|
| Launch information | Launch Date: September 24, 1999 Launch Vehicle: Athena 2 Launch Site: Vandenberg Air Force Base, California |
| Mission life | 12+ years |
| Spacecraft size | 1.83 m × 1.57 m (hexagonal configuration) |
| Spatial resolution | Panchromatic: 0.82 m Multispectral: 3.2 m |
| Positional accuracy | 15 meter CE90 (specification) 9 meter CE90 (measured) |
| Swath width | 11.3 km |
| Off-nadir imaging | Up to 60 degrees |
| Dynamic range | 11 bits per pixel |
| Revisit time | Approximately 3 days |
| Orbital altitude | 681 km |
| Nodal crossing | 10:30 a.m. |
| Collection capacity | 240,000 km2/day (Pan + MSI) |
DigitalGlobe GeoEye-1 Specifications
| Attribute | Value |
|---|---|
| Mission Life | Expected >10 years |
| Spacecraft Size | 4,186 lbs, 4.34 m in length |
| Altitude | 681 km |
| Orbit | Type: Sun-synchronous, 10:30 a.m. descending node Period: 98 min |
| Sensor Resolution and Spectral Bandwidth | Panchromatic: 41 cm GSD at nadir Black & White: 450 - 800 nm Multispectral: 1.65 m GSD at nadir Blue: 450–510 nm Green: 510–580 nm Red: 655–690 nm Near-IR: 780–920 nm |
| Dynamic Range | 11-bits per pixel |
| Swath Width | Nominal Swath Width: 15.3 km at nadir |
| Attitude Determination and Control | Type: 3-axis Stabilized Star tracker/IRU/reaction wheels, GPS |
| Retargeting Agility | Time to slew 200 km: 20 sec |
| Onboard Storage | 1 Tbit capacity |
| Communications | Payload Data: X-band 740/150 Mbps AES/DES encryption > Housekeeping: X-band 64 kbps AES encryption |
| Revisit Frequency (at 40°N Latitude) | 2.6 days at 30° off-nadir |
| Metric Accuracy | 5 m CE90, 3 m CE90 (measured) |
| Capacity | 350,000 km2/day Multi-spe |
DigitalGlobe QuickBird Specifications
| Attribute | Value | |
|---|---|---|
| Launch Information | Launch Date: October 18, 2001 Launch Vehicle: Delta II Launch Site: SLC-2W, Vandenberg Air Force Base, California | |
| Mission Life | Extended through early 2014 | |
| Spacecraft size | 2,400 lbs, 3.04 m (10 ft) in length | |
| Model | Altitude 400 km | Altitude 450 km |
| Orbit | Type: Sun Synchronous, 10:00 a.m. descending node Period: 92.4 min | 10:25 a.m. descending node Period: 93.6 min |
| Sensor Resolution and spectral bandwidth | Panchromatic: 55 cm GSD at nadir Black & White: 405 - 1053 nm Multispectral: 2.16 m GSD at nadir Blue: 430–545 nm Green: 466–620 nm Red: 590–710 nm Near-IR: 715–918 nm | Panchromatic 61 cm GSD at nadir Multispectral: 2.44 m GSD at nadir |
| Dynamic range | 11 bits per pixel | 11 bits per pixel |
| Swath width | Nominal Swath Width: 14.9 km at nadir | Nominal swath width: 16.8 km at nadir |
| Attitude determination and control | Type: 3-axis Stabilized Star tracker/IRU/reaction wheels, GPS | Type: 3-axis Stabilized Star tracker/IRU/reaction wheels, GPS |
| Retargeting agility | Time to slew 200 km: 37 sec | 38 sec |
| Onboard Storage | 128 Gb capacity | 128 Gb capacity |
| Communications | Payload Data: 320 Mbps X-band Housekeeping: X-band from 4, 16 and 256 Kbps, 2 Kbps S-band uplink | Payload Data: 320 Mbps X-band Housekeeping: X-band from 4, 16 and 256 Kbps, 2 Kbps S-band uplink |
| Revisit Frequency (at 40oN Latitude) | Revisit time may vary from 2 to 12 days depending on target location as the orbit decays. | Revisit time may vary from 2 to 12 days depending on target location as the orbit decays. |
| Metric accuracy | 23 m CE90, 17 m LE90 (without ground control) | 23 m CE90, 17 m LE90 (without ground control) |
| Capacity | 200,000 km2 per day | 200,000 km2 per day |