Estimation of time-delay and direction of arrival in complex sea and land environment using parabolic equation method

Zhang Dongmin; Liao Cheng; Deng Xiaochuan; Feng Ju

doi:10.11884/HPLPB201931.190230

Volume 31 Issue 10

Oct. 2019

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Article Navigation > High Power Laser and Particle Beams > 2019 > 31(10): 103211

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Zhang Dongmin, Liao Cheng, Deng Xiaochuan, et al. Estimation of time-delay and direction of arrival in complex sea and land environment using parabolic equation method[J]. High Power Laser and Particle Beams, 2019, 31: 103211. doi: 10.11884/HPLPB201931.190230

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Estimation of time-delay and direction of arrival in complex sea and land environment using parabolic equation method

doi: 10.11884/HPLPB201931.190230

Institute of Electromagnetics, Southwest Jiaotong University, Chengdu 610031, China

Received Date: 2019-06-23
Rev Recd Date: 2019-07-07
Publish Date: 2019-10-15

Abstract

Abstract

Time-delay and direction of arrival are two important signal parameters in wireless positioning, radar detection, and target tracking applications. In this paper, a parabolic equation method is presented to simulate the propagation of pulse signals in the sea-to-land environment and to estimate the characteristic parameters of the signals considering irregular terrains and atmospheric refraction. A correlation function method is presented to extract the time-delay of the received signal from parabolic equation. Besides, a multiple signal classification algorithm is used to estimate the direction of arrival of signals, which provides a higher resolution compared with the traditional wave spectral method. Numerical examples are given to illustrate the correctness of the presented methods. Finally, with the presented methods, simulation experiments in a typical sea and land environment are presented to analyze the effects of evaporation duct on signal's delay and direction of arrival.
- parabolic equation,
- time-delay,
- direction of arrival,
- sea and land environment,
- evaporation duct

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References(15)

References

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