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Cassini RADAR Sequence Planning and Instrument Performance

West, Richard D. and Anderson, Yanhua and Boehmer, Rudy and Borgarelli, Leonardo and Callahan, Philip and Elachi, Charles and Gim, Yonggyu and Hamilton, Gary and Hensley, Scott and Janssen, Michael A. and Johnson, William T. K. and Kelleher, Kathleen and Lorenz, Ralph and Ostro, Steven and Roth, Ladislav and Shaffer, Scott and Stiles, Bryan and Wall, Steve and Wye, Lauren C. and Zebker, Howard A. (2009) Cassini RADAR Sequence Planning and Instrument Performance. IEEE Transactions on Geoscience and Remote Sensing, 47 (6). pp. 1777-1795. ISSN 0196-2892.

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The Cassini RADAR is a multimode instrument used to map the surface of Titan, the atmosphere of Saturn, the Saturn ring system, and to explore the properties of the icy satellites. Four different active mode bandwidths and a passive radiometer mode provide a wide range of flexibility in taking measurements. The scatterometer mode is used for real aperture imaging of Titan, high-altitude (around 20 000 km) synthetic aperture imaging of Titan and Iapetus, and long range (up to 700 000 km) detection of disk integrated albedos for satellites in the Saturn system. Two SAR modes are used for high- and medium-resolution (300-1000 m) imaging of Titan's surface during close flybys. A high-bandwidth altimeter mode is used for topographic profiling in selected areas with a range resolution of about 35 m. The passive radiometer mode is used to map emission from Titan, from Saturn's atmosphere, from the rings, and from the icy satellites. Repeated scans with differing polarizations using both active and passive data provide data that can usefully constrain models of surface composition and structure. The radar and radiometer receivers show very good stability, and calibration observations have provided an absolute calibration good to about 1.3 dB. Relative uncertainties within a pass and between passes can be even smaller. Data are currently being processed and delivered to the planetary data system at quarterly intervals one year after being acquired.

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Janssen, Michael A.0000-0001-5476-731X
Additional Information:© 2009 IEEE. Manuscript received February 12, 2008; revised May 7, 2008. First published February 6, 2009; current version published May 22, 2009. This work was performed at the JPL, California Institute of Technology, under contract with the NASA.
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Subject Keywords:Cassini; RADAR; radiometer; synthetic aperture radar (SAR)
Issue or Number:6
Record Number:CaltechAUTHORS:20130311-110309505
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Official Citation:West, R.D.; Anderson, Y.; Boehmer, R.; Borgarelli, L.; Callahan, P.; Elachi, C.; Yonggyu Gim; Hamilton, G.; Hensley, S.; Janssen, M.A.; Johnson, W. T K; Kelleher, K.; Lorenz, R.; Ostro, S.; Roth, L.; Shaffer, S.; Stiles, B.; Wall, S.; Wye, L.C.; Zebker, H.A., "Cassini RADAR Sequence Planning and Instrument Performance," Geoscience and Remote Sensing, IEEE Transactions on , vol.47, no.6, pp.1777,1795, June 2009 doi: 10.1109/TGRS.2008.2007217
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:37439
Deposited By: Jason Perez
Deposited On:11 Mar 2013 20:44
Last Modified:03 Oct 2019 04:47

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