A Dartcom 16-bit HRPT image is stored in the form of six component files. Only the RAW and RPD files are used by FIMPORT. A Dartcom RAW file contains the scanline or video data. This is the file which must be used in conjunction with FIMPORT. The Dartcom RPD file is an auxiliary text file that contains information such as the satellite name, date/time of image capture, and orbital element values. The information from the RPD file (if present) is read into a text segment by FIMPORT. There is no Earth location data in Dartcom RAW or RPD files, hence, FIMPORT does not create a GCP segment for the Dartcom format. A RPD file must have the same basename as the corresponding RAW file, but with a different extension. It must also reside in the same directory as the RAW file.
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