A Rigorous Forest Scattering Model Validation Through Comparison With Indoor Bistatic Scattering Measurements

Bellez, Sami; Roussel, H.; Dahon, Cyril; Geffrin, Jean-Michel

doi:10.2528/pierb11063009

Cited by 14 publications

(17 citation statements)

References 23 publications

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“…Further details on the computation process of these scattering mechanisms are reported in [23] and [25].…”

Section: Description Of the Vefie Modelmentioning

confidence: 99%

“…The thickness of a dielectric plate should be greater than the skin depth for the whole considered frequency band. We have reported in [25] the theoretical and experimental results regarding only the copolarized fields scattered by simple reduced-scale models of forests in the frequency band of 4-12 GHz.…”

Section: Full Polarimetric Bistatic Radar Imaging I Introductionmentioning

confidence: 98%

“…In our previous studies [23]- [25], a rigorous approach for modeling the bistatic scattering by a collection of dielectric objects above a ground was provided and confronted with measurements on reduced-scale models representing different tree configurations. The reduced-scale models of forest are composed of sets of vertical and/or tilted dielectric parallelepipeds, respectively representing the tree trunks and/or primary branches, placed above an aluminum circular plate.…”

Section: Full Polarimetric Bistatic Radar Imaging I Introductionmentioning

confidence: 99%

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Full Polarimetric Bistatic Radar Imaging Experiments on Sets of Dielectric Cylinders Above a Conductive Circular Plate

Bellez

Roussel

Dahon

et al. 2013

IEEE Trans. Geosci. Remote Sensing

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This paper presents fully polarimetric bistatic radar scattering measurements on groups of dielectric vertical and/or tilted square cross-sectional cylinders above a conductive circular plate in the frequency range of 6-18 GHz. The experiments have been conducted in the BABI facility at the French Aerospace Lab (ONERA). The imaging experiments consider an azimuthal bistatic radar configuration with a single incident direction and many scattering directions, in the way that the receiver positions synthesize a 1-D circular aperture in a horizontal plane around the focal point of the anechoic chamber. The bistatic scattering by the different sets of cylinders is also achieved through numerical simulations by using a volume-electric-field-integral-equation model employing a method of moments. First, theoretical and experimental bistatic radar-cross-section values are confronted. The comparisons show a good agreement for all polarization cases (vv, hv, vh, and hh). Then, a near-field reconstruction algorithm has been extended from a monostatic to our bistatic radar configuration in order to generate the reflectivity maps by focusing both theoretical and experimental scattered fields. The comparisons of the 2-D bistatic synthetic aperture radar images show that the two prediction techniques are accurate.Index Terms-Bistatic synthetic aperture radar (SAR) (BiSAR) imaging, bistatic measurements, forest scattering mechanisms, method of moments (MoM), numerical modeling, volume electric field integral equation (vEFIE).

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“…Further details on the computation process of these scattering mechanisms are reported in [23] and [25].…”

Section: Description Of the Vefie Modelmentioning

confidence: 99%

Section: Full Polarimetric Bistatic Radar Imaging I Introductionmentioning

confidence: 98%

Section: Full Polarimetric Bistatic Radar Imaging I Introductionmentioning

confidence: 99%

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Full Polarimetric Bistatic Radar Imaging Experiments on Sets of Dielectric Cylinders Above a Conductive Circular Plate

Bellez

Roussel

Dahon

et al. 2013

IEEE Trans. Geosci. Remote Sensing

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“…Meanwhile, electromagnetic scattering and propagation in vegetations play important roles in certain fields such as agricultural production [1], environment change prediction [2], wireless communications [3] and target detection [4]. Recently, research on bistatic scattering [5][6][7][8][9][10] has received considerable attention because of the multidimensional information provided by bistatic radar systems, which is more than that provided by the monostatic configuration for it only contains 1D data in the backscattering direction. Additional information contained in the bistatic radar has the potential to provide improvements in monitoring vegetation growth and detecting drought degree of crops.…”

Section: Introductionmentioning

confidence: 99%

Bistatic Scattering Characteristics of Wheat and Soybean by Radiative Transfer Model in L Band and C Band

Zhang¹,

Wu²

2016

PIER B

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Compared with the backscattering configuration, the bistatic scattering echoes can provide multidimensional information on land surface. Based on the Michigan Microwave Canopy Scattering (MIMICS) model, a first-order microwave bistatic scattering model for vegetations is developed in this paper. The dominant scattering mechanism for wheat and soybean in the L and C bands is analyzed by simulating the bistatic scattering echoes in multiple viewpoints, which can help us understand the interaction between incident wave and vegetation parameters. The influence of crop height, leaf size and moisture of vegetations and down layer soil on the scattering echoes is fully investigated. The simulations show that the bistatic scattering echoes are more sensitive to the vegetation parameters than that in backscattering configuration. There exist optimal scattering angles, in specular direction and in direction perpendicular to the incident plane, to improve the retrieval accuracy of vegetation parameters and moisture of soil surface. Moreover, the simulations demonstrate that bistatic scattering echoes in high frequency (C band) are a good choice to retrieve the vegetation parameters, and the echoes in low frequency (L band) are preferred to retrieve the soil parameters. This research can be used to provide reference for crop monitoring and future bistatic system design.

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“…Using this method, the accuracy of emissivity will be influenced. Different from monostatic measurement, bistatic measurement [9], the other method, measures not only the backscattering, but also the scattering from the other direction [10][11][12]. Bistatic scattering in the space is measured to improve the estimated accuracy of emissivity of the calibration load.…”

Section: Introductionmentioning

confidence: 99%

Simulation Analysis of the Effect of Measured Parameters on the Emissivity Estimation of Calibration Load in Bistatic Reflection Measurement

Liu¹,

Li²,

Jin³

et al. 2012

PIER

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Abstract-This paper presents the estimation of emissivity of calibration load using discretized scattering simulation data in bistatic reflection measurement, and analyzes the effect of several measured parameters on emissivity of calibration load. In the analysis of the impact of measured parameters on emissivity, a new calibration target is designed to improve the accuracy of emissivity measurement. In this bistatic measurement, the scattering from calibration load is simulated by FDTD (Finite-Difference Time-Domain) method. Based on Kirchhoff's law, the emissivity of calibration load is estimated by the discretized scattering data composed of different scanning angle interval and sampling azimuth planes. By the studies of simulation results, the estimation accuracy of emissivity of calibration load can be improved by selected appropriate measured parameters in bistatic reflection measurement.

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A Rigorous Forest Scattering Model Validation Through Comparison With Indoor Bistatic Scattering Measurements

Cited by 14 publications

References 23 publications

Full Polarimetric Bistatic Radar Imaging Experiments on Sets of Dielectric Cylinders Above a Conductive Circular Plate

Full Polarimetric Bistatic Radar Imaging Experiments on Sets of Dielectric Cylinders Above a Conductive Circular Plate

Bistatic Scattering Characteristics of Wheat and Soybean by Radiative Transfer Model in L Band and C Band

Simulation Analysis of the Effect of Measured Parameters on the Emissivity Estimation of Calibration Load in Bistatic Reflection Measurement

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