Phenomenological Theory of Radar Targets

Huynen, J. Richard

doi:10.1016/b978-0-12-709650-6.50020-1

Cited by 364 publications

(337 citation statements)

References 48 publications

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“…An eigenvalue analysis of [G] is performed and the corresponding eigenvalues rearranged according to their absolute value (Λ 1 > Λ 2 ). According to the target decomposition of Huynen, the Euler parameter m related to the real physical target size is given by [6]:…”

Section: Huynen Decompositionmentioning

confidence: 99%

Experimental Anechoic Chamber Measurements of a Target Near an Interface

Marquart¹

2006

PIER

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Abstract-The backscattered field of an illuminated sphere with diameter ∅ = 30.5 cm above a perfect conducting plate is measured in an anechoic chamber at different heights for a varying incidence angle φ in the range 5 • to 75 • . A high frequency field λ ∅ is transmitted, so that two significant transitions from lit to shadow regions are given over the entire incidence angle range for the considered ray field. The polarimetric behavior of the measured scattering matrix [S] is investigated by using the common coherent and incoherent decomposition theorems used by the radar polarimetry scientific community. Close to the shadow boundaries the polarimetric behavior of the sphere significantly changes. Representing the different decomposition parameters used in radar polarimetry over the incidence angle range, the transition zones are related to local maxima or minima. Hence, the extreme values of the polarimetric parameters give information about the geometrical parameters e.g target size and its height above the plate.

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Section: Huynen Decompositionmentioning

confidence: 99%

Experimental Anechoic Chamber Measurements of a Target Near an Interface

Marquart¹

2006

PIER

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“…The Kennaugh matrix [1] and the target coherency matrix are straightforward decomposed using the Huynen decomposition. For convenient comparison, these decomposition theorems are therefore applied to the target coherency matrix [T c ] .…”

Section: Overview Of the Target Decomposition Theoremsmentioning

confidence: 99%

“…The first decomposition was proposed by Huynen in [1]. The Kennaugh matrix is decomposed into a sum of an average stationary target and a residual N-target (non-symmetric "noise"-target).…”

Section: Introductionmentioning

confidence: 99%

“…Thus a time average must be performed. Other matrices are used to describe timedependent targets: the Kennaugh matrix [1], the target coherency matrix [2] and the covariance matrix [3]. Their elements are linear functions of the time-averaged cross-products of the time-dependent scattering matrix elements S hh S hv * , S hh S vv * , S hv S vv * and their time-averaged modulus square S hh S hh * , S hv S hv * and S vv S vv * where indicates a time average and * the complex conjugate.…”

Section: Introductionmentioning

confidence: 99%

“…For an atmospheric polarimetric radar, the dominant type of scattering is less important than for a SAR image where a lot of different kinds of targets are often present. Therefore the classical incoherent target decomposition theorems ( [1,9]), [2] and [5], are first selected. The utility of these decomposition methods for the purpose of extracting useful "real world information" from the polarimetric data must be investigated.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Decomposition Theorems Applied to Random and Stationary Radar Targets

Unal¹,

Ligthart²

1998

PIER

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Impact of cross‐polarization isolation on polarimetric target decomposition and target detection

Wang

Jin

et al. 2015

Radio Science

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Cross-polarization isolation is one of the key engineering parameters for a polarimetric radar system. Previous studies focused more on the calibration of cross-talk contamination. This paper presents a numerical evaluation of the requirement for cross-polarization isolation from the data users' perspective, i.e., the quantitative impact of polarization cross talk on polarimetric target decomposition and the associated applications such as classification and detection. Sensitivity analyses of several commonly used target decomposition parameters suggest that a theoretical lower bound of À32 dB isolation level is preferred to avoid any significant impact on these parameters. Our analyses with both simulated and real synthetic aperture radar (SAR) data show that a level of À25 dB would be acceptable for general terrain surface classification. This requirement is also true for man-made target detection application. Using simulated SAR images of man-made targets in natural environment, sensitivity analyses on two polarimetric detectors, Yang and Marino, both suggest that target detection performance would break down rapidly if isolation deteriorates from À25 dB to À20 dB.

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Phenomenological Theory of Radar Targets

Cited by 364 publications

References 48 publications

Experimental Anechoic Chamber Measurements of a Target Near an Interface

Experimental Anechoic Chamber Measurements of a Target Near an Interface

Decomposition Theorems Applied to Random and Stationary Radar Targets

Impact of cross‐polarization isolation on polarimetric target decomposition and target detection

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