Polarimetric Passive Remote Sensing of a Periodic Soil Surface: Microwave Measurements and Analysis

Nghiem, S. V.; Veysoglu, M.E.; Kong, Jin Au; Shin, R.T.; O’Neill, Kevin; Lohanick, Alan W.

doi:10.1163/156939391x01021

Cited by 26 publications

(9 citation statements)

References 6 publications

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“…We will label the four parameters TBh, TBv , UB, and VB respectively in this paper. It is shown in [3] that the third and fourth Stokes parameters may be related to the brightness temperature in a 45 degree linearly polarized measurement and a right hand circularly polarized measurement ( TB ) as follows:…”

Section: Theory Of Polarimetrymentioning

confidence: 99%

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Polarimetric thermal emission from rough ocean surfaces

Johnson

Kong

Shin

et al. 1994

Journal of Electromagnetic Waves and Applications

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A numerical study of the polarimetric thermal emission from ocean surfaces randomly rough in one dimension using a Monte Carlo technique is presented. In this study, a set of finite length surface profiles with desired statistics was generated using a spectral method. Each surface was extended periodically to create an infinite rough surface, and the thermal emission was computed using the extended boundary condition method (EBC) and the method of moments (MOM). The results from the set of surfaces were then averaged to obtain the Monte Carlo estimate of polarimetric thermal emission. The surface statistics chosen were intended to model a wind perturbed ocean surface in the X to Ku band microwave region. The results of the study show that the third Stokes parameter, UB , is sensitive to the azimuthal angle between the surface periodicity and the looking angle, the rms height of the surface, and the surface power law spectrum slope, and that this parameter is insensitive to variations in polar angle, permittivity, and surface spectrum high frequency content.

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Section: Theory Of Polarimetrymentioning

confidence: 99%

“…Recent theoretical works have suggested the potential of passive polarimetry in the remote sensing of geophysical media [1][2][3][4][5]. It has been shown that the brightness temperature in the third Stokes parameter, UB , may become large for azimuthally asymmetric fields of observation.…”

Section: Introductionmentioning

confidence: 99%

Polarimetric thermal emission from rough ocean surfaces

Johnson

Kong

Shin

et al. 1994

Journal of Electromagnetic Waves and Applications

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“…Polarimetric PMMW images provide an extra dimension of information beyond intensity-only radiometric energy of the scene [5,6], thus a number of researchers are working on passive polarimetric imager design. Some of them have successfully achieved the fully-polarimetric devices [7][8][9], while others mainly focus on linearly (especially horizontal and vertical) polarized system due to the expensive hardware cost [10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Object Segmentation for Linearly Polarimetric Passive Millimeter Wave Images Based on Principle Component Analysis

Lü¹,

Peng²,

Li³

et al. 2017

PIER M

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Abstract-Traditional passive millimeter wave imaging (PMMW) mechanism measures intensity-only radiometric energy of the scene, and the limited information restricts the subsequent process of target detection and recognition. Polarimetric phenomena provide an extra dimension of information and are utilized to improve the PMMW imaging performance. Based on linear polarization characteristics for terrain identification in our previous work, the horizontal, vertical and 45 degree linearly polarimetric images are obtained by manually changing the polarization orientation of the radiometer with a selfdesigned rotating installation. Then the related Stokes parameters and the linearly polarized angle are calculated for principal component analysis (PCA). Pixels with similar polarimetric characteristic are clustered in the score-plot feature space. Then the clusters are extracted to realize object segmentation of the raw image. Three types of objects including metallic stuff, lawn and concrete park are finally segmented, demonstrating that the proposed segmentation is feasible and effective.

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“…Models for one dimensional periodic surface scattering have found application in a wide range of areas, ranging from optical grating design [8] to the prediction of wave propagation over the ocean [10]. In a more recent application, theories and experiments involving passive remote sensing of one dimensional periodic surfaces [11][12][13][14][15][16] have conclusively demonstrated the existence of a third Stokes parameter component of the thermal emission, U B . Assumed to be non-zero only in polarimetric passive remote sensing, U B is known to respond to the azimuthal anisotropy of the medium under view [17] and thus is currently being investigated for application to remote sensing of wind direction over the ocean [18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%