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  • 1
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    (abstract) Asteroids and Comets: Future Imaging Opportunities with Earth-Based Radar Systems (1994)
    In:  Other Sources
    Details
    Publication Date: 2018-06-08
    Description: Major improvements currently underway to the Arecibo 305 m antenna and 13 cm wavelength radar system will currently increase the radar system's sensitivity by a factor of about 20. Recent upgrades to the Goldstone 3.5 cm wavelength radar system have also improved its sensitivity. While the Arecibo system will have significantly greater sensitivity than Goldstone, the Arecibo antenna's limited declination coverage of -2(deg) to +38(deg) means that the Goldstone system will be important for the investigation of near-Earth objects with declinations outside this range. Over one hundred mainbelt and near-Earth asteroids per year will be observable with the new Arecibo system, and there will be a number of good imaging opportunities each year. While only a few imaging opportunities are predicted for comets over the next 10 years, the system will be able to respond to unexpected cometary opportunities. We are currently investigating the applicability of VLBI techniques to the direct synthesis of images of asteroids and comets illuminated by a radar signal.
    Keywords: Communications and Radar
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    The Surface of Titan: Arecibo Radar Observations (2002)
    In:  Other Sources
    Details
    Publication Date: 2019-07-18
    Description: The Arecibo 12.6 cm radar system was used to observe Titan in 1999, 2000 and 2001. The mean value of the radar albedo is 0.16 and the polarization ratio is 0.35. For some longitudes the echo has a specular component although most of the echo power is contained in a diffuse component. Additional information is contained in the original extended abstract.
    Keywords: Lunar and Planetary Science and Exploration
    Type: Lunar and Planetary Science XXXIII; LPI-Contrib-1109
    Format: text
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    NASA TECHNICAL REPORTS
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