NASA finds Umbra SAR data misses geolocation accuracy spec
NASA's CSDA program found Umbra's SAR data underperforms on geolocation accuracy and radiometric calibration versus reference systems.
what happened
NASA's Commercial Satellite Data Acquisition (CSDA) program published a Principal Investigator Evaluation Summary and a Quality Assessment Report on Umbra's X-band SAR data, posted July 9. NASA subject matter experts, following joint NASA/ESA assessment guidelines, found the data's spatial resolution matched Umbra's specifications, but concluded "the overall positioning performance of the Umbra data did not meet the expected accuracy" and that radiometric performance "underperform[ed] relative to that of well-calibrated reference SAR systems."
why it matters
CSDA evaluations inform whether NASA scientists can rely on a commercial vendor's data for research use, and a geolocation and calibration shortfall is a concrete data point for any customer weighing Umbra against ICEYE, Capella, or other SAR operators for measurement-grade use cases, even as Umbra's stated resolution checks out.