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Overcoming Challenges in Processing HEO-Specific PCW System Data

Explore the detailed processing challenges faced by the PCW system on HEO orbit, including accurate Image Navigation and Registration, variable spatial factors, limitations for Arctic validation, and more. Learn about the impact of limited in-situ data on product quality and the complexities of atmospheric correction in polar regions. Stay informed on the latest advancements in satellite imaging technology.

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Overcoming Challenges in Processing HEO-Specific PCW System Data

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  1. HEO-specific processing challenges for PCW system

  2. Major challenges • Accurate Image Navigation and Registration (INR) for two-satellite system on HEO orbit: • Variable altitude, spatial resolution, size of imaging area; • Steerable spacecraft (due to COMMS operations), attitude knowledge and control; • GCP ( Ground Control Points) matching in polar region is a challenge due to surface properties (snow/ice) and low sun elevation; • Low sun and polar night conditions – impact on product quality • Scene ID, clouds vs snow/ice; • Atmospheric correction: aerosol, water vapor, radiative transfer modeling; • Temperature inversions; • Limited sources of in-situ and ground measurements for validation in the Arctic

  3. -4hrs Temporal Sequence of Earth Views from PCW -3hrs 0hrs 24.20 x 24.20 19.40 x 19.40 +3hrs +4hrs 15.80 x 15.80 Trishchenko and Garand, 2010, JTECH, submitted

  4. Variation of geometry during imaging Trishchenko and Garand, 2010, JTECH, submitted

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