Study on the Characteristics of Composite Electromagnetic Scattering From Soil Surface and Combinatorial Target Placed on It

Xincheng REN; Peng LIU; Xiaomin ZHU; Pengju YANG; Ye ZHAO

doi:10.11999/JEIT190645

Volume 42 Issue 11

Nov. 2020

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Article Navigation > Journal of Electronics & Information Technology > 2020 > 42(11): 2629-2635

Xincheng REN, Peng LIU, Xiaomin ZHU, Pengju YANG, Ye ZHAO. Study on the Characteristics of Composite Electromagnetic Scattering From Soil Surface and Combinatorial Target Placed on It[J]. Journal of Electronics & Information Technology, 2020, 42(11): 2629-2635. doi: 10.11999/JEIT190645

Citation:

Xincheng REN, Peng LIU, Xiaomin ZHU, Pengju YANG, Ye ZHAO. Study on the Characteristics of Composite Electromagnetic Scattering From Soil Surface and Combinatorial Target Placed on It[J]. Journal of Electronics & Information Technology, 2020, 42(11): 2629-2635. doi: 10.11999/JEIT190645

Citation:

Xincheng REN, Peng LIU, Xiaomin ZHU, Pengju YANG, Ye ZHAO. Study on the Characteristics of Composite Electromagnetic Scattering From Soil Surface and Combinatorial Target Placed on It[J]. Journal of Electronics & Information Technology, 2020, 42(11): 2629-2635. doi: 10.11999/JEIT190645

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Study on the Characteristics of Composite Electromagnetic Scattering From Soil Surface and Combinatorial Target Placed on It

doi: 10.11999/JEIT190645

1.
School of Physics and Electronic Information, Yan’an University, Yan’an 716000, China
2.
Key Laboratory for Information Science of Electromagnetic Waves (MoE), Fudan University, Shanghai 200433, China

Funds: The National Natural Science Foundation of China (61861043, 61701428, 61801416), The Scientific Research Projects of Shaanxi Education Department (17JK0860), The Open Foundation of Fudan University Key Laboratory for Information Science of Electromagnetic Waves (MoE) (EMW201910)

Received Date: 2019-08-27
Rev Recd Date: 2020-04-08

Available Online: 2020-05-07

Publish Date: 2020-11-16

Abstract

Abstract

In order to meet the needs of measuring and detecting combinatorial target placed on the rough surface, Dobson semi-empirical model and dielectric complex permittivity formula are used to represent the real and imaginary parts of the soil dielectric constant, the soil surface is simulated with the model of exponential distribution and Monte Carlo method. The strategy of the Finite Difference Time Domain (FDTD) method for calculating the composite scattering from rough surface with target and the modeling method are presented with their validity evaluated by the method of moment, then the composite scattering of soil surface and combinatorial target placed on it is studied by this method, the angular distribution curve of the composite scattering coefficient is obtained. The results show that the composite scattering coefficient oscillates with the scattering angle, and the scattering enhancement effect occurs in the mirror reflection direction; the larger the root mean square of the fluctuation of soil surface, the larger the composite scattering coefficient; the larger the correlation length, the smaller the composite scattering coefficient; the larger the soil moisture content, the smaller the composite scattering coefficient; the influence of the scale and dielectric constant of combinatorial target, incident angle on composite scattering coefficient is complex. The results obtained in this paper can be used to solve the composite electromagnetic scattering from rough land surface and rough sea surface with any target placed on it. Compared with other numerical methods, the finite difference time domain method can not only obtain higher accuracy, but also reduce the calculation time and the amount of memory occupying.
- Composite electromagnetic scattering,
- Finite Difference Time Domain (FDTD) method,
- Soil surface,
- Combinatorial target

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References(21)

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