25 May 2017 Recent non-linear radar research at the Army Research Laboratory
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Abstract
Nonlinear radar has proven to be a viable means of detecting devices that contain electrical nonlinearities. Electrical nonlinearities are present in dissimilar metals, metal to oxide junctions, semiconductors and more. This paper presents a linear and nonlinear synthetic aperture radar (SAR) system capable of imaging linear and nonlinear targets. The system creates images using data collected from a fixed 16 channel receiver with a single transmitter. A custom 16:1 switching network was developed to collect the SAR data from a 16 antenna receive array. SAR images presented show a nonlinear target placed directly on the ground and imaged in multiple range and cross-range locations. Data is also presented showing the clutter rejection properties of nonlinear radar. Images show that the harmonic radar is able to ignore the strong linear response from a corner reflector, while retaining the nonlinear response from a target.
Conference Presentation
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Kyle A. Gallagher, Kyle A. Gallagher, Kenneth I. Ranney, Kenneth I. Ranney, Gregory J. Mazzaro, Gregory J. Mazzaro, Anthony F. Martone, Anthony F. Martone, Kelly D. Sherbondy, Kelly D. Sherbondy, Ram M. Narayanan, Ram M. Narayanan, } "Recent non-linear radar research at the Army Research Laboratory", Proc. SPIE 10188, Radar Sensor Technology XXI, 101881B (25 May 2017); doi: 10.1117/12.2266266; https://doi.org/10.1117/12.2266266
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