31 May 2013 Nonlinearity and phase noise effects in 340 GHz 3D imaging radar
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Security scanning using sub-millimeter wave 3D imaging radar maps the subsurface structure of subjects, revealing objects hidden under clothing. This requires a wide dynamic range to detect small targets near large ones and centimeter range resolution to resolve small objects. For radar designers this translates into requiring a very low phase noise source which maintains good chirp linearity over a very wide fractional bandwidth, and other researchers have highlighted these effects. We present an assessment of the phase noise and chirp nonlinearity in our IRAD 340 GHz 3D imaging radar and make comparisons of different source architectures and nonlinearity compensation schemes.
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Duncan A. Robertson, Duncan A. Robertson, Scott L. Cassidy, Scott L. Cassidy, David R. Bolton, David R. Bolton, "Nonlinearity and phase noise effects in 340 GHz 3D imaging radar", Proc. SPIE 8715, Passive and Active Millimeter-Wave Imaging XVI, 87150M (31 May 2013); doi: 10.1117/12.2015774; https://doi.org/10.1117/12.2015774


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