These assessments include geometric, radiometric, and spatial characterizations and any artifacts present in the imagery. ECCOE also facilitates assessments of the operability and usefulness of these data in scientific and other applications.
Geometric characterization establishes root mean square error and relative offsets for imagery analyzed. This is done by comparing data to ground control and other accurately assessed and validated imagery.
Radiometric characterization focus on reflected radiance values of digital numbers. All bands available in imagery assessments are quantized and calculated. Imagery is collected over locations across the planet where very little atmospheric change happens providing characterization engineers a slate for monitoring changes in sensor radiometry.
Spatial characterization focus on the spatial resolution of the satellite images. Methods for characterizing spatial accuracy includes pixel alignment, knife edge, and modulation transfer function. These methods provide concise characterization of sensor optical systems.
Qualifying artifacts during the characterization process includes ensuring artifacts are not single events in these data.
After the ECCOE/JACIE team completes the characterization process, recommendations are provided to companies to enhance their system’s capabilities. Relationships between government and commercial endeavors are enhanced through this process.
