heo-specific processing challenges for pcw system
DESCRIPTION
HEO-specific processing challenges for PCW system. Major challenges. Accurate Image Navigation and Registration (INR) for two-satellite system on HEO orbit: Variable altitude, spatial resolution, size of imaging area; - PowerPoint PPT PresentationTRANSCRIPT
HEO-specific processing challenges for PCW system
Page 2 – April 19, 2023
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
Page 3 – April 19, 2023
Temporal Sequence of Earth Views from PCW
-4hrs
+4hrs
-3hrs
+3hrs
0hrs
24.20 x 24.20 19.40 x 19.40
15.80 x 15.80
Trishchenko and Garand, 2010, JTECH, submitted
Page 4 – April 19, 2023
Variation of geometry during imaging
Trishchenko and Garand, 2010, JTECH, submitted