Extracting UWB One-Dimensional Scattering Center Based on Improved Matrix Pencil

WEI Shaoming; HONG Wenyan; WANG Jun; GENG Xueyin; JIN Mingming

doi:10.11999/JEIT210602

Volume 44 Issue 4

Apr. 2022

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Article Navigation > Journal of Electronics & Information Technology > 2022 > 44(4): 1231-1240

WEI Shaoming, HONG Wenyan, WANG Jun, GENG Xueyin, JIN Mingming. Extracting UWB One-Dimensional Scattering Center Based on Improved Matrix Pencil[J]. Journal of Electronics & Information Technology, 2022, 44(4): 1231-1240. doi: 10.11999/JEIT210602

Citation:

WEI Shaoming, HONG Wenyan, WANG Jun, GENG Xueyin, JIN Mingming. Extracting UWB One-Dimensional Scattering Center Based on Improved Matrix Pencil[J]. Journal of Electronics & Information Technology, 2022, 44(4): 1231-1240. doi: 10.11999/JEIT210602

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Extracting UWB One-Dimensional Scattering Center Based on Improved Matrix Pencil

doi: 10.11999/JEIT210602

School of Electronic and Information Engineering, Beihang University, Beijing 100191, China

Funds: The National Natural Science Foundation of China (61671035), The Key Laboratory Foundation (6142502180103)

Received Date: 2021-06-21
Accepted Date: 2022-03-10
Rev Recd Date: 2022-02-24

Available Online: 2022-03-15

Publish Date: 2022-04-18

Abstract

Abstract

In order to estimate the micro-motion parameters accurately and fleetly, an Ultra Wide Band (UWB) scattering center extraction algorithm based on Geometrical Theory of Diffraction (GTD) model and improved matrix pencil is proposed. The radial distance of the scattering center, the type parameters and the scattering intensity can be estimated simultaneously. The target GTD scattering model under UWB condition is transformed into a state space equation in this method, and the singular value decomposition is used to remove the noise component from the Hankel matrix. The generalized eigenvalue decomposition of the reduced Hankel matrix is performed, and the echo estimation is constructed by using the strongest scattering points in a single pulse, and then the radial distance estimation is obtained. Under the condition that the distance parameters are accurately estimated, the model parameters are decoupled so that the type parameters are separated from other parameters, and the type parameters are estimated by the least square algorithm and the search algorithm. Finally, the scattering intensity of the scattering center is estimated based on the least square method. The simulation results show that the improved matrix beam method has good robustness under low SNR, and can extract the target micro-motion distance, type parameters and scattering intensity with high precision.
- Ultra Wide Band (UWB) Radar,
- Micro-motion parameters estimation,
- Scattering center,
- Improved matrix pencil,
- Eigen decomposition

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References(32)

References

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