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  • Harmonic response vs. target orientation: a preliminary study of the effect of polarization on nonlinear junction detection
Title: Harmonic response vs. target orientation: a preliminary study of the effect of polarization on nonlinear junction detection
When an electromagnetically-nonlinear radar target is illuminated by a high-power stepped-frequency probe, a sequence of harmonics is unintentionally emitted by that target. Detection of the target is accomplished by receiving stimulated emissions somewhere in the sequence, while ranging is accomplished by processing amplitude and phase recorded at multiple harmonics across the sequence. The strength of the harmonics reflected from an electronic target depends greatly upon the orientation of that target (or equivalently, the orientation of the radar antennas). Data collected on handheld wireless devices reveals the harmonic angular-dependence of commercially-available electronics. Data collected on nonlinearly-terminated printed circuit boards implies the origin of this dependency. The results of this work suggest that electronic targets may be classified and ultimately identified by their unique harmonic-response-vs.-angle patterns.  more » « less
Award ID(s):
1955805
PAR ID:
10343404
Author(s) / Creator(s):
; ; ; ; ; ;
Editor(s):
Raynal, Ann M.; Ranney, Kenneth I.
Date Published:
Journal Name:
SPIE 12108, Radar Sensor Technology XXVI
Page Range / eLocation ID:
2
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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