All registration errors which are calculated by the parallax correction and the inter-telescope geometric correction processes are consolidated and changed into latitude/longitude from pixel units in the along- and cross-track directions. The latitude/longitude values at each lattice point, which are calculated by the geometric system correction, are corrected with the consolidated error data.

A set of positions expressed by latitude and longitude are adopted as the geolocation data (the geometric coefficients) for each lattice point.

Other parameters which are necessary for higher level product generations such as Level-3 (the geocoded ortho images) data products and the Level-4 (DEM) data products are calculated in this module, and are appended to the Level-1A products as the header information. Figure 2-10 shows the geometric coefficient generation flow.

Figure 2-10 Geometric Coefficients Generation