Cassini Synthetic Aperture RADAR Digital Map Products of Titan Dataset
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Abstract
The Digital Map Products (DMPs) are high-level, gridded (raster) maps of Titan produced by the United States Geological Survey (USGS), Flagstaff, from the lower-level JPL Cassini Synthetic Aperture RADAR (SAR) products (SBDR, BIDR, and supplement files). The USGS cartographic system Integrated Software for Imagers and Spectrometers (ISIS) is used for this processing, augmented by the commercial stereoanalysis package Softcopy Exploitation Toolkit (SOCET SET) for production of stereo topographic maps. A total of eight DMP data sets are produced. The Global Radiometry Data Record (GRDR), Global Scatterometry Data Record (GSDR), Global Topography Data Record (GTDR), and Mosaicked Image Data Record (MIDR) products are mosaics of data from multiple observation segments. The Pass Radiometry Data Record (PRDR), Pass Scatterometry Data Record (PSDR), and Repeat Image Data Record (RIDR) products have a separate set of files for each segment. Stereo DTM products are derived from pairs of such segments. These are indicated by flyby number TXXX and segment number SXX in the PRODUCT_ID and file name. Segments during which SAR or HiSAR data were obtained are numbered identically to the BIDRs; non-SAR/HiSAR segments are assigned higher numbers. [S. D. Wall et al., Cassini RADAR Users Guide, 2019]