The RADARSAT Geophysical Processor System: Quality of Sea Ice Trajectory and Deformation Estimates

摘要: Abstract NASA's RADARSAT Geophysical Processor System (RGPS) uses sequential synthetic aperture radar (SAR) images to track the trajectories of some 30 000 points on Arctic sea ice for periods up 6 months. Much basin is imaged and tracked every 3 days. The result a highly detailed picture how moves deforms. are initially spaced 10 km apart organized into four-cornered cells. area strain rates calculated each cell new observation its corners. accuracy RGPS tracking, changes, deformation estimates needed make dataset useful analysis, model validation, data assimilation. Two comparisons made assess accuracy. first compares tracking performed at two different facilities (the Jet Propulsion Laboratory in Pasadena, California, Alaska SAR Facility Fairbanks, Alaska), between which primary difference operator intervention. error sta...