Peng Li

Nanosecond-level time-domain coding metasurface for radar signal generation

Boyang Qian, Hanjun Zhao, Xiaohua Zhu, Peng Li et autres

The time-domain coding metasurface (TDCM) offers a rapid and efficient approach for manipulating frequency spectra of electromagnetic waves. To date, not only finite-order harmonics can be generated and coded discretely, frequency modulation of continuous waves has also been investigated. However, limited phase-tuning …

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Main Controlling Factors of Dolomite Reservoirs for Deep Carbonate Oil and Gas Exploration

Dahai Wang, Lichi Ma, Tao Zhang, Peng Li et autres

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Accurate Detection of Electrical Capacitance Tomography Under Strong Interference in Metallic Media

Jiabao Li, Peng Li, Xu Zhao, Jing Liu et autres

With the continuous improvement in data acquisition accuracy and image reconstruction algorithms, Electrical Capacitance Tomography (ECT) has been widely used in industrial multiphase flow monitoring and other fields. However, in some engineering practical application scenarios, the electric field distortion triggered by the …

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Light-Speed FIR Filtering via 3-Bit Programmable Metasurfaces

Rui Xu, Hanjun Zhao, Boyang Qian, Hui Chu et autres

In this paper, a novel programmable metasurface-based finite impulse response (FIR) filter design methodology that achieves photonic-domain signal processing through 3-bit amplitude-modulated meta-atoms. By systematically quantizing digital FIR filter coefficients into spatially distributed amplitude modulation patterns, the metasurface implements convolutional filtering operations …

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DSP implementation of signal processing system for millimeter-wave water flow velocity online monitoring radar

Dazhen Gu, Peng Li, Hui Chu, Renhong Xie et autres

This paper proposes a real-time signal processing architecture and signal processing flow of the flow velocity online monitoring radar based on FPGA and DSP, which makes the system structure more compact and reasonable, at the same time can achieve real-time signal processing. …

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Nanosecond-level time-domain coding metasurface for radar signal generation

Hui Chu, Boyang Qian, Hanjun Zhao, Xiaohua Zhu et autres

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Urban skies safeguarded: innovative drone detection with programmable metasurface periscope

Hui Chu, Hanjun Zhao, Peng Li, Yong‐Xin Guo

Programmable metasurfaces (PMSs) exhibit great potentials in target detection techniques, because they can take actions to change channel propagation characteristics which introduces further degrees of freedom for system optimizations. However, responses of most traditional PMSs are sensitive to incident angles of impinging …

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Shallow Subsurface Detection with the Resonance Characteristics of Ambient Noise Recording

Guanchao Wang, Cheng-shen Chen, G. Li, Peng Li

Abstract Imaging near-surface structures, such as voids, tunnels, or high-contrast anomalies, is an essential and critical task in urban area underground engineering projects; the required accuracy is within a few meters vertically and horizontally, which poses considerable challenges to geophysical surveys in …

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Research and Application of Cooperative Control Algorithm of Source-Grid-Load-Storage System in Low-Voltage Distribution Station

Tiantian Zhang, Zhe Nan, Li Wang, Peng Li et autres

Amidst carbon peaking and neutrality goals, new energy is impacting active distribution networks leading to serious imbalance between power supply and demand. Particularly in rural areas with weak grids where issues like transformer heavy loads persist propose a low-voltage distribution station multi-load …

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Mechanistic study of noise source and propagation characteristics of flow noise of a submarine

Zhihao Ma, Peng Li, Lianzhou Wang, Jun Lü et autres

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A clutter suppression algorithm for water current velocity radar

Baiyi Shao, Yibin Rui, Xiaoqi Chen, Renhong Xie et autres

In this paper, a clutter suppression algorithm for velocity measurement of water flow signals is presented to improve the signal-to-noise ratio. Considering the characteristics of water flow signals and the properties of moving target indication (MTI) algorithm in signal processing, we use …

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DSP implementation of signal processing system for millimeter wave flow velocity radar

Jinhui Liu, Peng Li, Yanyu Ji, Renhong Xie et autres

In this paper we propose a novel signal processing architecture for millimeter wave flow velocity radar. FPGA and DSP are combined to make the system more compact while achieving real-time signal processing. We focus on the workflow and software design for DSP, …

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