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Proceedings Paper

Instantaneous, stepped-frequency, nonlinear radar
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Paper Abstract

Researchers have recently developed radar systems capable of exploiting non-linear target responses to precisely locate targets in range. These systems typically achieve the bandwidth necessary for range resolution through transmission of either a stepped-frequency or chirped waveform. The second harmonic of the reflected waveform is then analyzed to isolate the non-linear target response. In other experiments, researchers have identified certain targets through the inter-modulation products they produce in response to a multi-tone stimulus. These experiments, however, do not exploit the phase information available in the inter-modulation products. We present a method for exploiting both the magnitude and phase information available in the inter-modulation products to create an “instantaneous” stepped frequency, non-linear target response. The new approach enables us to both maintain the unambiguous range dictated by the fundamental, multi-tone separation and obtain the entire target signature from a single transmitted waveform.

Paper Details

Date Published: 21 May 2015
PDF: 8 pages
Proc. SPIE 9461, Radar Sensor Technology XIX; and Active and Passive Signatures VI, 946122 (21 May 2015); doi: 10.1117/12.2186620
Show Author Affiliations
Kenneth Ranney, U.S. Army Research Lab. (United States)
Kyle Gallagher, The Pennsylvania State Univ. (United States)
Anthony Martone, U.S. Army Research Lab. (United States)
Gregory Mazzaro, The Citadel (United States)
Kelly Sherbondy, U.S. Army Research Lab. (United States)
Ram Narayanan, The Pennsylvania State Univ. (United States)


Published in SPIE Proceedings Vol. 9461:
Radar Sensor Technology XIX; and Active and Passive Signatures VI
G. Charmaine Gilbreath; Chadwick Todd Hawley; Kenneth I. Ranney; Armin Doerry, Editor(s)

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