Scattering Simulation and Reconstruction of a 3-D Complex Target Using Downward-Looking Step-Frequency Radar

Dai, Junwen; Jin, Ya‐Qiu

doi:10.1109/tgrs.2011.2131659

Cited by 15 publications

(10 citation statements)

References 23 publications

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“…In our former works [7][8][9], ray tracing has been used for incoherent bistatic scattering-center representation of complex scattering objects such as cars and BART has been applied to calculation of polarized scattering from a volumetric electrically large target. The extraction of far-field RCS information from near-field ISAR images can be found in [10].…”

Section: Isar Imaging Geometry and Computation Of Scatteringmentioning

confidence: 99%

Simulation of ISAR imaging for a space target and reconstruction under sparse sampling via compressed sensing

Wang

Eibert

Jin

2014

2014 XXXIth URSI General Assembly and Scientific Symposium (URSI GASS)

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Simulation of Inverse synthetic aperture radar (ISAR) imaging of space targets and reconstruction under sparse sampling via compressed sensing (CS) are investigated. The numerical method of bidirectional analytic ray tracing (BART) is employed to compute the polarized scattering from an electrically large target. With multi-orbit and multistation imaging mode, two-D and three-D (dimensional) ISAR images are acquired. CS is introduced into the reconstruction of the ISAR image under sparse sampling. As example, a simple satellite model for the Aura satellite is presented.

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Section: Isar Imaging Geometry and Computation Of Scatteringmentioning

confidence: 99%

Simulation of ISAR imaging for a space target and reconstruction under sparse sampling via compressed sensing

Wang

Eibert

Jin

2014

2014 XXXIth URSI General Assembly and Scientific Symposium (URSI GASS)

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“…Dai 和 Jin [17] 曾用下视聚束模式的频率步进雷达合成二维圆弧形孔径, 并用 BART 单站散射的算法来获取三维散射矩阵. 然后, 对重采样数据进行三维快速 Fourier 变换(3D-FFT)获得三维聚焦图像, 实现三维目标几何特征的重构.…”

Section: 曾提出基于几何光学(Go)与物理光学(po)的长方体unclassified

Simo线阵列雷达对三维复杂目标电磁散射的仿真与立体重构

李¹,

金²

2012

Sci. Sin.-Tech.

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“…The simulated CPR depends on the surface parameters, for example, surface roughness and incident angle. The analytic tracing of polygon ray tubes greatly enhances computation efficiency (Dai & Jin, 2011). Step‐frequency technology and Inverse Fast Fourier Transform (IFFT) are used to produce the radar image.…”

Section: Introductionmentioning

confidence: 99%

A Numerical Model of CPR of Rough Surface With Discrete Scatterers for Analysis of Mini‐RF Data

Liu

Jin

2020

Radio Science

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Circular polarization ratio (CPR) was regarded as an important index for detecting water ice in the permanently shaded region (PSR) of the Moon poles. However, many studies have intuitively described that the double-bounce scatte ring caused by dihedral consisting of rock facets and the lunar rough surface may yield high CPR. Under a large local incidence angle, single scattering is reduced. Double-bounce scattering of the dihedral governs the echoes and leads to an enhanced CPR. In this paper, a numerical model of the lunar rough surface with discrete scatterers, for example, rock bodies, is developed. The bidirectional analytic ray tracing (BART) method is applied to numerically solve high-order scattering of this surface/rocks model. The lunar surface is modeled by the Digital Elevation Model (DEM) data from Lunar Reconnaissance Orbiter (LRO) Lunar Orbiter Laser Altimeter (LOLA). This paper quantitatively analyzes how the surface topography, rocks, radar local incidence, etc, affect the CPR. It is found that at a small local incident angle, the single scattering is usually dominant and results in a small CPR. When the local incident angle becomes large, the radar wave reflected in the specular direction is more likely to be reflected again and increases the CPR.

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Scattering Simulation and Reconstruction of a 3-D Complex Target Using Downward-Looking Step-Frequency Radar

Cited by 15 publications

References 23 publications

Simulation of ISAR imaging for a space target and reconstruction under sparse sampling via compressed sensing

Simulation of ISAR imaging for a space target and reconstruction under sparse sampling via compressed sensing

Simo线阵列雷达对三维复杂目标电磁散射的仿真与立体重构

A Numerical Model of CPR of Rough Surface With Discrete Scatterers for Analysis of Mini‐RF Data

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