High-Resolution Radar Imaging of Mercury's North Pole with the Upgrade Arecibo Radar
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Mercury polar ice Arecibo Goldstone↗
Engineering topics
Perillat, P.
Publications and source records attributed to Perillat, P..
Mars radar mapping: Strong depolarized echoes from the Elysium/Amazonis outflow channel complex
A new technique was used to make radar maps of Mars with the Arecibo radiotelescope. The observations were made during the 1990 opposition (close approach) of Mars. Among the most interesting of the preliminary results is the discovery of strong depolarized echoes from the enormous Elysium/Amazonis outflow channel complex. These strong echoes may represent rough-surface scattering off the youngest lava flows on Mars.
Harmon, J. K.↗
Ultrahigh vertical resolution radar measurements in the lower stratosphere at Arecibo
The paper reports on heretofore unprecedented observations of the turbulent layers in the lower stratosphere using the Arecibo 2380-MHz radar. Spectral profiles with about 20 m height and 15 s time resolutions at altitudes in the range 16-19 km are used to parametrize relevant characteristics of the turbulence, namely, vertical widths, distributions, lifetimes, and cutoffs height. These measurements validate previous deconvolved estimates and are free from contaminating factors like shear or beam broadening and partial reflections. Some theoretical predictions are verified, in particular those relating to the height of cutoff and the outer scale of the turbulence.
Ierkic, H. M.↗