Saturns Rings and Titan

The only radar-detected ring system is quite unlike other planetary targets in terms of both the experimental techniques employed and the physical considerations 

FIGURE 26 OC and SC echo spectra obtained at 13 cm for comet IRAS-Araki-Alcock, truncated at 2% of the maximum OC amplitude. The narrowband echo from the nucleus is flanked by a broadband echo from large (1-cm) particles in a 1000-km-radius cloud surrounding the nucleus. [From Harmon, J. K., Campbell, D. B., Mine, A. A., Shapiro, 1.1., and Marsden, B. G. (1989). Astrophys. J. 338, 1071-1093.] 

Apart from landing a spacecraft on Titan, radar provides the most direct means to study the cloud-covered surface of Saturn s largest moon. Voyager and ground-based data indicate a surface temperature and pressure of 94 K and 

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