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digital elevation models
with 5 m and 10 m post spacing |
What has to be observed while performing an ortho correction using RPCs from IRS-P6 Ortho-Kits?As pointed out in the ResourceSat-1 Geometric Accuracy Assessment, IRS-P6 RPCs should be used with image-space polynomial correction terms. A first-order polynomial correction is sufficient for LISS-IV, LISS-III and AWiFS B and D scenes. For AWiFS A and C scenes, a second-order polynomial correction is required. For GAF's test results see the following slides. |