NASA CSDA Project: GeoEye-1 and WorldView Satellite Imagery

Multiple satellite imagery collections acquired by NASA's Commercial Smallsat Data Acquisition (CSDA) Program from Maxar Technologies. The GeoEye-1 multispectral collection provides 4-band imagery at 1.84m resolution from September 2008 to present, while its panchromatic imagery offers 0.46m resolution. The WorldView-1 panchromatic collection provides 0.5m resolution imagery from September 2007 to present.

Use Cases

• Land cover classification based on multispectral bands in the visible and near-infrared wavelengths.
• Change detection over time based on the approximately 3-day temporal resolution of GeoEye-1 imagery.
• High-resolution feature extraction based on panchromatic imagery with sub-meter spatial resolution.
• Global land surface analysis based on imagery collected across the global land surface.

Strengths

• Provides very high spatial resolution, with panchromatic imagery as fine as 0.41 meters.
• Offers long temporal coverage, with collections starting in September 2007 and 2008 and continuing to the present.
• Data is sensor-corrected (Level 1B) and provided in standard geospatial formats (NITF and GeoTIFF).

Limitations

• Data access is restricted by an NGA license and requires program approval, limiting immediate usability.
• Row count and total dataset size are unknown, which may limit suitability assessment.
• Column-level documentation is absent; file structure and metadata must be inferred after download.

Provenance

Source

Maxar Technologies (formerly DigitalGlobe), acquired by NASA's Commercial Smallsat Data Acquisition (CSDA) Program.

Collection Method

Collected by the GeoEye-1 and WorldView-1 satellites using their respective imaging systems.

Time Range

September 2007 to present for WorldView-1; September 2008 to present for GeoEye-1.

Freshness

Data collection is ongoing from 2007/2008 to present, but the last update date for the dataset listing is unknown.

Geography

Global land surface.