Youqian Feng

Air Force Engineering University

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Co-Authors

Zhonghai Yin

Air Force Engineering University

Cheng Zhou

Air Force Engineering University

Qinli An

Air Force Engineering University

Yuena Ma

Air Force Engineering University

Fuping Yu

Air Force Engineering University

Dahua Gao

Xidian University

Ruihu Li

Air Force Engineering University

Mingjie Li

Union Hospital

Qun Zhang

Air Force Engineering University

Yang Liu

Air Force Engineering University

Cooperative Institutions

Air Force Engineering University

Chinese Academy of Sciences

Xidian University

Fudan University

Peking University

Northwestern Polytechnical University

Shanghai Jiao Tong University

Huazhong University of Science and Technology

Sichuan University

Tsinghua University

Author Statistics

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Research Field

Research on Electronic Camouflage Jamming Technology Based on Compensating Modulation

Youqian Feng

ISAR is a kind of new microwave imaging system,which is the one of important perspective of imaging radar.Because of its imaging via two-dimension compress(range and cross-range compress),its anti-jamming capability is stronger than that of traditional radars.Aimed at chirp ISAR,a new electronic camouflage jamming method is proposed in this paper.In the method,on the basis of obtaining transmitted signal of opposite side,the phase compensating modulation can be utilized to simulate returned signal of any scatterer of the target.The camouflage jamming can be achieved via retransmitting simulated echo.The effectiveness of the proposed method can be proved by simulation results.

Camouflage

Modulation (music)

SIGNAL (programming language)

Chirp

Echo (communications protocol)

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A New Method Using Table to Sparse Representation in Pairs of Bases with Matching Pursuits

Communications in computer and information science (2010)

Qinli An Youqian Feng Dahua Gao Fuping Yu

Representation

Table (database)

Base (topology)

K-SVD

10.1007/978-3-642-14831-6_33

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Quantum Codes Constructed from Self-Dual Codes and Maximal Self-Orthogonal Codes Over F5

Procedia Engineering (2012)

Luobin Guo Yuena Ma Youqian Feng

Subcodes of some known maximal self-orthogonal codes and optimal self-dual codes of length n between 9 and 22 over F5 are studied. Using a random search algorithm, we construct subcodes with given dual distance 2, 3, 4, 5 and 6 from these known codes, and discuss code chains formed by obtained subcodes and their dual codes. Based on these obtained code chains, we construct many quantum codes of distance 3, 4, 5, 6 and 8 by using of Steane's construction, some of these quantum codes are present known best codes.

Code (set theory)

Expander code

10.1016/j.proeng.2012.01.510

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A Model of Probabilistic Event for CPS Based on Hidden Markov Model

Advances in intelligent systems and computing (2019)

Cheng Zhou Youqian Feng Zhonghai Yin Yali Wang Yunmin Huang

Cyber-physical system

Probability model

10.1007/978-3-030-02804-6_125

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Improved RPN for Single Targets Detection Based on the Anchor Mask Net

Communications in computer and information science (2019)

Mingjie Li Youqian Feng Zhonghai Yin Cheng Zhou Fanghao Dong

Net (polyhedron)

10.1007/978-981-13-9917-6_2

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Formation control of Multi-agents Based on Method of Matrices

MATEC Web of Conferences (2018)

Cheng Zhou Youqian Feng Zhonghai Yin Lei Wang Xin Zhao

Formation control is one of the most actively studied topics in multi-agents systems, in which all agents will form a desired formation to complete certain tasks. In this paper, a method of matrices is proposed to describe information about formation. Additionally, a flocking algorithm with virtual agents is proposed to control all agent to complete task of desired formation. Simulation results show that all agents can form a desired formation and their velocities consensus are verified.

Flocking (texture)

10.1051/matecconf/201817303091

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Research on radar shift-frequency jamming suppression based on sparse decomposition

Youqian Feng Fuping Yu Dahua Gao Qinli An

Shift-frequency Jamming is effective jamming to pulse compress radar of the Linear Frequency Modulation signal(LFM). To suppress shift-frequency jamming,the idea of constructing the combining redundancy dictionary is proposed.A set of LFM shift-time signals and LFM shift-frequency signals are built up according to the features of transmitted signal and jamming signal,the two-part signals form the combining redundancy dictionary.Then jamming suppression and the signal reconstruction are achieved with the sparse decomposition method and BP(Basis Pursuit)algorithm.The simulation results show that the proposed method is effective and correct.

SIGNAL (programming language)

Source

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Image Denoising Method with Adaptive Bayes Threshold in Nonsubsampled Contourlet Domain

AASRI Procedia (2012)

Chui Ming-wei Youqian Feng Wei Wang LI Zheng-chao Xiaodong Xu

In this paper, an improved image denoising method based on a nonlinear thresholding function with adaptive bayes threshold in Nonsubsampled Contourlet Transform (NSCT) domain. In overcoming the shortcomings of the same threshold, the noise deviation of the different sub-band are estimated based on the coefficients of different directional and level sub-bands in NSCT domain, and the thresholds of every sub-band is estimated by Bayesian threshold estimation method. After choosing the thresholds, a nonlinear thresholding function was chosen to overcome the shortcomings of the soft and the hard thresholding function. The simulation results show that the proposed method in this paper can remove Gaussian white noise more effectively, and get a higher PSNR value and keep image texture and detail information more clearly, which also has a better visual effect.

Contourlet

10.1016/j.aasri.2012.06.080

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Citations (16)

Plant leaf classification based on weighted locally linear embedding

Shanwen Zhang Youqian Feng Jing Liu

Locally linear embedding (LLE) is effective in discovering the geometrical structure of the data. But when it is applied to real-world data, it shows some weak points, such as being quite sensitive to noise points and outliers, and being unsupervised in nature. In this paper, we propose a weighted LLE. The experiments on synthetic data and real plant leaf data demonstrate that the proposed algorithm can efficiently maintain an accurate low-dimensional representation of the noisy manifold data with less distortion, and acquire higher average recognition rates of plant leaf compared to other dimensional reduction methods.

Data point

Representation

Distortion (music)

Manifold (fluid mechanics)

10.1109/iwaci.2010.5585156

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Citations (1)

A New Method for Joint Estimation of Frequency and DOA of Coherent Signals

Radio and communications technology (2008)

Youqian Feng

Smoothing

Mode (computer interface)

Source

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