More Titan radar

The Planetary Society's Emily Lakdawalla came through yet again with an excellent article on Cassini radar pictures from the last Titan flyby; there are pictures here that I hadn't seen elsewhere, and details about where they were taken and how they relate to things we've seen before. For the first time, some of these radar images cover areas that have already been photographed in the infrared, albeit not at maximum detail. The "Circus Maximus" crater turns out to be the bullseye-shaped feature inside the dark ring just to the northwest of the "Lying H".

Synthetic aperture radar turns out to be much better for making sharp images of Titan than initially expected, which is good, since the infrared pictures that were originally expected to do the bulk of the Titan mapping are blurrier than expected. One thing to keep in mind when looking at these pictures is that they may appear weirder than they actually are; synthetic aperture radar images can be hard to interpret under the best of circumstances. This Wikipedia article on SAR explains how it works. I believe that Cassini is using the Doppler beam sharpening technique to get the azimuthal positions of pixels.