4 May 2018 A thorough analysis of various geometries for a dynamic calibration target for through-wall and through-rubble radar
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Abstract
It is common practice to use a metal conducting sphere for radar calibration purposes. The aspect-independence of a sphere allows for a more accurate and repeatable calibration of a radar than using a nonspherical calibration artifact. In addition, the radar cross section (RCS) for scattering spheres is well-known and can be calculated fairly easily using far field approximations. For Doppler radar testing, it is desired to apply these calibration advantages to a dynamic target. To accomplish this, a spherical polyhedron is investigated as the calibration target. This paper analyzes the scattering characteristics for various spherical polyhedral geometries. Each geometry is analyzed at 3.6 GHz in two states: contracted and expanded. For calibration purposes, it is desired that the target have a consistent monostatic RCS over the entirety of its surface. The RCS of each spherical polyhedral is analyzed and an optimized geometry, for calibration purposes, is chosen.
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Michael J. Harner, Michael J. Harner, Ram M. Narayanan, Ram M. Narayanan, John R. Jendzurski, John R. Jendzurski, Nicholas G. Paulter, Nicholas G. Paulter, "A thorough analysis of various geometries for a dynamic calibration target for through-wall and through-rubble radar", Proc. SPIE 10633, Radar Sensor Technology XXII, 106330Y (4 May 2018); doi: 10.1117/12.2305980; https://doi.org/10.1117/12.2305980
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