Search Results - "Liu, Yongtan"

PCFM Radar Waveform Design With Spectral and Correlation Considerations by Zhao, Dehua, Wei, Yinsheng, Liu, Yongtan

“…This paper considers the polyphase-coded FM (PCFM) waveform design with good spectral compatibility and correlation performance. In getting the desired PCFM…”
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Underdetermined Direction-of-Arrival Estimation Using Difference Coarray in the Presence of Unknown Nonuniform Noise by Jiang, Guojun, Wang, Mianzhi, Mao, Xingpeng, Qian, Cheng, Liu, Yongtan, Nehorai, Arye

“…The coarray techniques, e.g., nested and coprime arrays, can significantly improve degrees of freedom (DOFs) via constructing a so-called difference coarray,…”
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Research on Polarization Cancellation of Nonstationary Ionosphere Clutter in HF Radar System by Liu, Yongtan, Deng, Weibo, Hong, Hong, Mao, Xing-peng

“…Oblique projection polarization filter (OPPF) can be applied as an effective approach for interference cancellation in high-frequency surface wave radar…”
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Deterministic maximum likelihood method for direction-of-arrival estimation of strictly noncircular signals by Shi, Yunmei, Mao, Xingpeng, Cao, Mingyang, Liu, Yongtan

“…In this paper, a noncircular deterministic maximum likelihood (NC-DML) estimator for direction-of-arrival estimation of strictly NC signals is devised. Unlike…”
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Ionospheric decontamination and sea clutter suppression for HF skywave Radars by Lu, K., Liu, X., Liu, Y.

“…In this paper, a cascaded correction and suppression method of reducing ionospheric phase path contamination and sea clutter to enable detection of targets…”
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Spectrum optimization via FFT-based conjugate gradient method for unimodular sequence design by Zhao, Dehua, Wei, Yinsheng, Liu, Yongtan

“…•A unified method is proposed to design unimodular sequence with different uses.•FFT-based gradient calculation is derived to reduce the computation cost.•The…”
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Ionospheric clutter suppression using Wavelet Oblique Projecting Filter by Yuan Su, Yinsheng Wei, Rongqing Xu, Yongtan Liu

“…The detection performance of High Frequency Surface Wave Radar (HFSWR) is influenced by the nonstationary ionospheric clutter. For decades, ionospheric clutter…”
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Real-time waveform adaption in spectral crowed environment using a sub-waveforms-based library by Dehua Zhao, Yinsheng Wei, Yongtan Liu

“…This paper presents a novel library-based approach for real-time waveform adaption in spectral crowed environment. The suggested approach is to first design a…”
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Over-sampled polyphase code design for physical implementation with spectral and correlation consideration by Zhao, Dehua, Wei, Yinsheng, Liu, Yongtan

“…This paper presents an approach for designing continuous phase modulation (CPM) waveform with good spectral compatibility and low correlation properties. The…”
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Super-resolution processing for HF surface wave radar based on pre-whitened MUSIC by Xie, Junhao, Yuan, Yeshu, Liu, Yongtan

“…Owing to the decametric wavelength, the angular resolution of high-frequency surface wave radar (HFSWR) is usually coarse, especially when dimensions of…”
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Hopped-frequency waveform design for optimal detection in spectral congested environment by Zhao, Dehua, Wei, Yinsheng, Liu, Yongtan

“…In this paper, we suggest the hopper-frequency (HopF) waveform for cognitive probing in spectral congested environment. Similar with stepped-frequency (SF)…”
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Topology Awareness on Network Damage Assessment and Control Strategies Generation by Hui He, Hongli Zhang, Lihua Yin, Yongtan Liu

“…Threatens faced by large-scale network attacks, it is of great importance to exert an emergency response, in order to mitigate the further hazardous caused by…”
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Broadened Sea Clutter Suppression Method for Shipborne HF Hybrid Sky-Surface Wave Radar by Zhou, Xibo, Wei, Yinsheng, Liu, Yongtan

“…In shipborne high frequency (HF) hybrid sky-surface wave radar, the sea clutter is the important component of the echoes and the major clutter background for…”
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A new approach to electromagnetic wave diffraction by a plane with an impedance discontinuity by Binhao Jiang, Yongtan Liu

“…In this paper, an analytical method is used to formulate the problem of plane wave diffraction by a plane with an impedance discontinuity. This approach is…”
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Analyze the Sea Clutter Frequency of Multi-receiving Ships for Distributed Shipborne HF Hybrid Sky-Surface Wave Radar by Zhou, Xibo, Tong, Peng, Wei, Yinsheng, Liu, Yongtan

“…The distributed shipborne HF hybrid sky-surface wave radar contains two or more receiving ships. To combine multi-receiving data for signal processing, this…”
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Progress in HFSWR research at Harbin Institute of Technology by Yongtan Liu, Rongqing Xu, Ning Zhang

“…The Experimental HF Surface Over-The-Horizon Radar set up in the late of 80s has been updated by installation of multi-channel receivers with digitization at…”
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Detection and estimation of target on using polarization signal processing by Mao Xingpeng, Liu Yongtan, Dai Fusheng

“…It is very important to find an effective method for measuring the target range and estimating the target's power in the environment where the signal/clutter…”
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An approach based on trispectrum and rank statistics to testing departure from Gaussianity of stationary signals [radar signal processing] by Zongchuang Liang, Xingzhao Liu, Yongtan Liu

“…In this paper, a rank procedure based on trispectrum, to test the departure from the Gaussianity of stationary signals is presented. Both theoretical analysis…”
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A multiple-sweep-frequencies scheme based on eigen-decomposition to compensate ionospheric phase contamination by Kun Lu, Xingzhao Liu, Yongtan Liu

“…This paper presents an improved scheme to compensate nonlinear phase path contamination when the backscattered signal propagates through the ionosphere in…”
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A modified time delay estimation algorithm based on higher order statistics for signal detection problems by Liang Zongchuang, Liu Xingzhao, Liu Yongtan

“…Under the conditions of short data samples and low signal to noise ratio (SNR), practical applications for higher order statistics (HOS) are restrained by its…”
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