Magellan Image Data
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Scan day: 18 February 2014 UTC
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Description: Explains how orbit determinations based on short data arcs from a single day's tracking provide the basis for SAR processing, locating individual pixels, and mosaicking the image strips. The final data are sufficiently accurate to allow mosaicking of image data strips by a process of dead reckoning without the use of tie points.
Guide to Magellan Image Interpretation John P. Ford and Jeffrey J. Plaut ] The Magellan radar mapping mission produced the first global, high-resolution (~ 100-m) image data set of Venus [Saunders et al., 1992]. Images were obtained from September 1990 to September 1992 during three mapping cycles (Figure 2-1). A total of 4225 usable SAR imaging orbits was obtained. The area covered by each orbit is typically 20 km wide and 17,000 km long. Ninety-eight percent of the surface was imaged and many areas were viewed more than once with different imaging geometries and/or directions of illumination. Magellan image data products consist of mosaics in a variety of formats and scales. Figure 2-2 is a global radar mosaic. Details concerning the characteristics of the mosaics and the images, the imaging cycles, and information about the availability of data and data products are presented in this chapter.
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