2019
DOI: 10.2528/pierm19021703
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Embedded Resonances for Discrimination of Multiple Passive Nonlinear Targets Applicable to Dort

Abstract: This paper presents a method to distinguish multiple passive nonlinear targets, which can be applied to detection and selective wave focusing based on the decomposition of the time-reversal operator (DORT). A recent demonstration of DORT applied to harmonic scattering has shown that passive nonlinear targets (scatterers) can be detected in the presence of linear scatterers and separated into discrete eigenvalues. While DORT is effective in detecting multiple nonlinear targets, it could be difficult to discrimi… Show more

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Cited by 6 publications
(6 citation statements)
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“…Since σ is the apparent RCS as seen by the radar, it has the unit of [m 2 ]. But unlike linear RCS its value depends on the transmit power, gain, and distance, which determines the incident power level at the target as indicated in Equation (9). Depending on the incident power level at the target, the nonlinear response from the target varies.…”
Section: Nonlinear Radar Equationmentioning
confidence: 99%
See 3 more Smart Citations
“…Since σ is the apparent RCS as seen by the radar, it has the unit of [m 2 ]. But unlike linear RCS its value depends on the transmit power, gain, and distance, which determines the incident power level at the target as indicated in Equation (9). Depending on the incident power level at the target, the nonlinear response from the target varies.…”
Section: Nonlinear Radar Equationmentioning
confidence: 99%
“…For a given target with σ 2 , the apparent RCS can vary depending on the incident power level as indicated in Equation (9). To validate this, we obtain the values of σ at different incident power density levels (P t G t /4πR 2 ) by varying P t for three targets with the largest, middle, and smallest σ 2 .…”
Section: Nonlinear Radar Equationmentioning
confidence: 99%
See 2 more Smart Citations
“…11 The initial motivation for obtaining added gain in the bow-tie antenna described here is due to its role as a scattering target in our active investigation of multistatic detection for smart far-field wireless power transmission. [12][13][14] This work employs a multistatic detection technique involving time-reversal and pulse inversion to permit nonlinear targets, formed by connecting a passive rectifier to an antenna (to form a rectenna), to be located and distinguished. Because this technique is based on detection of harmonic responses, the antenna must have an ultrawide bandwidth and enhanced gain will result in increased backscattered energy.…”
Section: Introductionmentioning
confidence: 99%