Paper
4 May 2018 A thorough analysis of various geometries for a dynamic calibration target for through-wall and through-rubble radar
Michael J. Harner, Ram M. Narayanan, John R. Jendzurski, Nicholas G. Paulter
Author Affiliations +
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.
© (2018) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Michael J. Harner, Ram M. Narayanan, John R. Jendzurski, and 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); https://doi.org/10.1117/12.2305980
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KEYWORDS
Calibration

Radar

Optical spheres

Doppler effect

Scattering

Data processing

Standards development

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