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23 December 1997 Ground-penetrating SAR: a strawman design
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There is a great deal of interest in subsurface imaging of the earth's surface using SAR; however, most current and planned satellite SARs are not optimized for this purpose. Here we present a set of specifications for an earth-orbit satellite SAR specifically designed for subsurface imaging. In the design of a satellite borne ground penetrating SAR, there are several competing requirements all of which have to be balanced in a cost/benefit analysis. Here we look at two possible scenarios both using a 300 MHz carrier with one in a sun-synchronous orbit at 700 km altitude, the other at 250 km. Some of the critical parameters that are considered for this ground-penetrating SAR (n addition to those for a normal satellite SAR) include the wavelength, the dimensions of the real antenna, ground incidence angles and power density as well as polarization diversity. The intention here is to propose a system designed to maximize the subsurface back-scatter as a proportion of the total returned echo.
© (1997) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Peter T. Gough and Bobby R. Hunt "Ground-penetrating SAR: a strawman design", Proc. SPIE 3120, Wideband Interferometric Sensing and Imaging Polarimetry, (23 December 1997);

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