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  • Instrumentation and Photography  (2)
  • Meteorology and Climatology  (2)
  • 1
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    The MARSIS Science Mission (2005)
    In:  CASI
    Details
    Publication Date: 2005-04-25
    Description: The Mars Advanced Radar for Subsurface and Ionospheric Sounding (MARSIS) is an integral component of the Mars Express mission. A low-frequency sounding radar was carried on the Russian Mars 96 spacecraft, and in keeping with the concept of re-flying the science experiments lost on that mission, a call for a radar sounder was part of the Announcement of Opportunity for the 2003 ESA Mars Express mission. MARSIS is the only totally new instrument on Mars Express. The instrument was developed, delivered and operated as a joint effort between the Italian Space Agency and the U.S space agency NASA. The MARSIS science mission has been delayed due to concerns about the safety of the antenna deployment. As a testament to the importance placed on the
    Keywords: Instrumentation and Photography
    Type: Workshop on Radar Investigations of Planetary and Terrestrial Environments; 68; LPI-Contrib-1231
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    A Low Frequency Radio and Radar Instrument to Explore Jupiter's Icy Moons (2003)
    In:  CASI
    Details
    Publication Date: 2004-10-30
    Description: The addition of a comprehensive wave investigation to the Jupiter Icy Moons Orbiter (JIMO) science payload will provide a broad range of information on the icy moons of Jupiter including the detection of subsurface liquid oceans; mapping of their ionospheres; their interaction with the magnetospheric environment; and on the Jovian magnetosphere. These measurements are obtained through the use of both passive and active (sounding) means over broad frequency ranges. The frequency range of interest extends from less than 1 Hz to 40 MHz for passive measurements, from approximately 1 kHz to a few MHz for magnetospheric and ionospheric sounding, and between 1 and approximately 10 MHz for subsurface radar sounding. An instrument to detect subsurface radar sounding, magnetospheric interactions, and ionospheric sounding is discussed.
    Keywords: Instrumentation and Photography
    Type: Forum on Concepts and Approaches for Jupiter Icy Moons Orbiter; 42; LPI-Contrib-1163
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Stratigraphy of the Upper Martian North Polar Layered Deposits from Radar, Visible and Topographic Data (2011)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: No abstract available
    Keywords: Meteorology and Climatology
    Type: HEND Workshop; Apr 14, 2011; Moscow; Russia
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    Mars Express MARSIS Radar: A Prediction of the Effect of Overlying Ice on Detecting Polar Basal Lakes and Inter-Glacial Aquifers (2004)
    In:  CASI
    Details
    Publication Date: 2019-08-15
    Description: The penetration of the MARSIS radar signal into the polar ice mass is modeled to determine the capability of the instrument to locate sub-glacial aquifers. As a ground penetrating radar, the orbiting MARSIS transmits a signal greater than 1 W between 1-5 MHz. In this work we will investigate the effect of ice conductive losses on the radar-detection of subsurface aquifers. Based on wave propagation analysis, it is found that for a bulk ice conductivity below 10-5 S/m, conductive losses in the medium are not significant. However, if the bulk ice conductivity is relatively large (greater than 10-5 S/m), the reflected signal from any deep aquifer will be absorbed as it propagates in the lossy ice medium limiting the probing depth.
    Keywords: Meteorology and Climatology
    Type: NASA/TM-2004-212749 , Rept-2004-00837-0
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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