Radar Target Identification Using a “Banded” E-pulse Technique

Lui, Hoi-Shun; Shuley, N.V.

doi:10.1109/tap.2006.886510

Cited by 37 publications

(26 citation statements)

References 18 publications

(46 reference statements)

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“…Second, by taking the element-by-element sum of the two co-null Stokes vectors, i.e. [g(cn 1 ).+g(cn 2 )], the symmetry degree is determined by taking the ½arcsin(g 3 ) of the sum vector, such that 0 o represent a symmetrical target and 45 o represent a totally asymmetrical target. Finally, the tilt degree is determined by taking the ½arctan (g 2 /g 1 ) of the sum vector.…”

Section: Elongation Symmetry and Tilt Degreesmentioning

confidence: 99%

“…When identifying radar targets, researchers have used resonance based feature set [1][2][3][4], and sometime incorporated along a polarimetric feature to enhance performance [5][6][7][8][9][10][11][12]. As the target works as a polarization transformer, features such as symmetry, elongation and tilt that are related to the target shape can be deduced from the target characteristic polarization states (CPS).…”

Section: Introductionmentioning

confidence: 99%

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Description of Radar Target Using Resonance Based Null Polarization

2016

IJSR

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Abstract:By the representation of the target transient response as a series of natural resonance modes, a target feature set based on the co-polarized null states of the modes is used to represent a radar target. This is done by incorporating the mode residue terms in a scattering matrix of quadrature polarization channels, and then bythe optimization (using the Lagrangian optimization procedure) of the received power (determined by the Kennaugh and Stokes formulism), the characteristic polarization state set of a mode is obtained. A 2D plane model is used to demonstrate the ability of this concept to convey a complex target physical attributes such as elongation, symmetry and tilt; the results showed that a feature set based on nulls states of the target modes is robust.

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Section: Elongation Symmetry and Tilt Degreesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Description of Radar Target Using Resonance Based Null Polarization

2016

IJSR

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“…Target identification based on resonance excitation (e.g. the Extinction pulse technique of [3][4][5]), uses baseband pulse excitation to reveal the target natural resonance modes. The mode resonant frequencies are target dependent, have enhanced returns and independent of aspect; thus making them a prime candidate for inclusion in any target feature set description.…”

Section: Introductionmentioning

confidence: 99%

Euclidean Feature Set Based on Modified Characteristic Polarization States

2016

IJSR

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This paper presents a feature set selection procedure, which is implemented in the frequency domain and involves developing a modified CPS feature set that incorporates power information. Metric distances between the respective modified CPS at several target resonant frequencies are computed and are used to form the final feature set. Stationary individual targets in free space were used to display the theoretical feasibility of this feature selection algorithm.

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“…Both the location of items (that support appreciable induced surface currents) concealed on the human body and the nature of these concealed items can be determined by making use of the well known and characteristic ringing that occurs when these items are excited with radiation that matches their resonant frequencies [25][26][27][28][29][30][31][32][33][34].…”

Section: Introductionmentioning

confidence: 99%

On Body Concealed Weapon Detection Using a Phased Antenna Array

Harmer¹,

Cole²,

Bowring³

et al. 2012

PIER

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Abstract-The detection and identification of metal items and, in particular weapons, of linear size ≥ 10 cm, concealed upon the human body, is demonstrated as being entirely feasible by using a phased array of suitably ultra wide band transceivers. The complex natural resonances and especially the fundamental resonance, are excited by ultra wide band, stepped frequency continuous wave illumination of the target, using a phased array of antennae to focus the radiation. Broadband illumination of the target with microwave radiation of suitable frequency range (Typically 0.3-3 GHz for handgun sized objects) excites low order complex natural resonances and the late time response of the concealed item can be spatially located using phased array imaging techniques. Further processing of the late time response enables classification of the concealed object, based on the complex natural resonant frequencies of the object, so that threat items such as handguns and knives can be differentiated from benign items such as mobile phone handsets and cameras.

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Radar Target Identification Using a “Banded” E-pulse Technique

Cited by 37 publications

References 18 publications

Description of Radar Target Using Resonance Based Null Polarization

Description of Radar Target Using Resonance Based Null Polarization

Euclidean Feature Set Based on Modified Characteristic Polarization States

On Body Concealed Weapon Detection Using a Phased Antenna Array

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