12 April 2021Moving target S-Band radar data for Doppler and micro-Doppler analysis using a scale-model helicopter measured in a 100GHz compact radar range
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Generation of moving target (Doppler and micro-Doppler) radar data on a scale-model helicopter with an arbitrary flight path is described. Fully-polarimetric micro-Doppler radar signatures of a 1/35th scale helicopter at S-Band were measured using a 100GHz compact range and are examined under several different situations. The motion of the rotor and blades are analyzed using standard range-doppler spectrograms. In particular, the effect of radial motion toward or away from the radar is considered and the consequences this motion will have on the range/doppler spectrogram of the radar data. It is found that a helicopter exhibiting no radial velocity will experience a degeneracy of signals from the rotation of the helicopter blades. This degeneracy is lifted when a non-zero radial motion is experienced. The effect of varying the radar pulse repetition frequency will be examined.
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Thomas M. Goyette, Jason Dickinson, Guy DeMartinis, Andrew Gatesman, Charles Molhoek, "Moving target S-Band radar data for Doppler and micro-Doppler analysis using a scale-model helicopter measured in a 100GHz compact radar range," Proc. SPIE 11742, Radar Sensor Technology XXV, 1174214 (12 April 2021); https://doi.org/10.1117/12.2587046