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Dual-Comb Ranging Review

Zebin Zhu, Guanhao Wu

Engineering 2018, Volume 4, Issue 6,   Pages 772-778 doi: 10.1016/j.eng.2018.10.002

Abstract: Dual-comb ranging is emerging as a powerful tool that exploits phase resolution and frequency accuracyUsing two coherent frequency combs, dual-comb ranging allows time and phase response to be measured rapidly

Keywords： Ranging     Dual-comb interferometer     Phase noise     Timing jitter     Tight-locking     Post-correction    

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A Realization to Enhance the Signal Noise Ratio With Superposition on the Same Phase Signal

Han Xiuting,Wang Jiechun,Jiao Zhenqaing,Gao Fei,Song Yubo

Strategic Study of CAE 2005, Volume 7, Issue 10,   Pages 64-68

Abstract: The method, in which mccltiple similar signals are superposed, can not only decrease the noise in theSince the noise in signals could be treated as white noise, after multiple superposition the added noise

Keywords： vibrating wave     reflection wave     signal enhancement     software for superposition signal    

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Design of noise-reduction seats for high-speed trains

Xiaojun DENG, Yanju ZHAO, Haijin ZHANG, Renzhong SHUAI, Leiwei ZHU

Frontiers of Mechanical Engineering 2018, Volume 13, Issue 3,   Pages 385-389 doi: 10.1007/s11465-017-0438-x

Abstract: reduce noise.interior noise spectral characteristics.seats substantially reduced the noise in an entire train car.noise level at a standard point in the passenger car by 1.5 dB.Therefore, the noise-reduction seats are effective in noise reduction.

Keywords： high-speed train     sound-absorbing materials     perforated board     noise-reduction seats    

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Anovel approach of noise statistics estimate using H∞ filter in target tracking

Xie WANG,Mei-qin LIU,Zhen FAN,Sen-lin ZHANG

Frontiers of Information Technology & Electronic Engineering 2016, Volume 17, Issue 5,   Pages 449-457 doi: 10.1631/FITEE.1500262

Abstract: Noise statistics are essential for estimation performance.In practical situations, however, a priori information of noise statistics is often imperfect.Previous work on noise statistics identification in linear systems still requires initial prior knowledgeof the noise.Then by applying state estimates obtained from the H∞ filter, better estimates of the noise mean and

Keywords： Noise estimate     H∞     filter     Target tracking    

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Ambient Noise Tomography for Coral Islands Article

Shaohong Xia, Changrong Zhang, Jinghe Cao

Engineering 2023, Volume 25, Issue 6,   Pages 182-193 doi: 10.1016/j.eng.2021.09.022

Abstract: recorded by a dense array on an isolated coral island in the South China Sea, we analyzed the ambient noisecharacteristics and obtained a 3D subsurface structure of the coral island using ambient noise tomographyWe made the following findings: ① The ambient noise frequencies can be roughly categorized into threeThe spectral characteristics of the noise below 5 Hz were consistent at different stations, but therewere significant differences in the characteristics of the noise above 5 Hz. ② For ambient noise frequencies

Keywords： Coral island     Ambient noise tomography     Engineering geology     South China Sea    

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Investigation of flow dynamics and decrease of vortex noise inside volute of centrifugal fans

LI Chunxi, WANG Songling

Frontiers in Energy 2008, Volume 2, Issue 2,   Pages 235-240 doi: 10.1007/s11708-008-0040-3

Abstract: The generation, evolution, and noise of the vortex were investigated when cylinder-shaped and cone-cylinder-shapedExperimental results indicated A-sound level and spectrum noise of the refitted fan decreased and thetwo anti-vortex rings were effective in decreasing vortex noise.more effective than the cylinder-shaped one in breaking large-scale vortexes and decreasing vortex noise

Keywords： cylinder-shaped     evolution     computational     effective     large-scale    

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Application of python-based Abaqus preprocess and postprocess technique in analysis of gearbox vibration and noise

Guilian YI, Yunkang SUI, Jiazheng DU

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 2,   Pages 229-234 doi: 10.1007/s11465-011-0128-z

Abstract:

To reduce vibration and noise, a damping layer and constraint layer are usually pasted on the innersurface of a gearbox thin shell, and their thicknesses are the main parameters in the vibration and noiseacceleration of the point on the gearbox surface is the main index that can reflect the vibration and noisepoint, and the normal accelerations of different points can reflect the degree of the vibration and noisestructure, and the vibration acceleration level is adopted to measure the degree of the vibration and noise

Keywords： Abaqus secondary development     Python language     vibration and noise reduction     K-S function     vibration acceleration    

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Performance research on anti-noise FM jamming of pseudo-random code phase modulation and sine FM combined

Tu Youchao,Zhao Huichang,Zhou Xingang

Strategic Study of CAE 2009, Volume 11, Issue 9,   Pages 68-73

Abstract: The anti-noise FM jamming performance of pseudo-random code phase modulation and sine FM combined fuzeprinciple of the combined fuze was introduced, and its overall SJR gain is reduced in detail under the noiseFM jamming, then, the factors affecting its anti-noise FM jamming performance were analyzed, such asThe results provide the important theoretic foundation for the improvement on anti-noise FM jamming performance

Keywords： pseudo-random code     fuze     sine FM     SJR gain     anti-jamming    

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Integrated virtual-design methods for forecasting radiated noise of single cylinder diesel block

GUO Lei, HAO Zhiyong, XU Hongmei, LIU Lianyun

Frontiers in Energy 2008, Volume 2, Issue 4,   Pages 416-421 doi: 10.1007/s11708-008-0097-z

Abstract: Finally, the radiated noise such as sound power level and efficiency in the out sound field were obtained

Keywords： bearing     dynamical     frequency response     dynamical simulation     hybrid dynamical    

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of structural responses using an optimal passive tuned mass damper under stationary Gaussian white noise

Min-Ho CHEY, Jae-Ung KIM

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 3,   Pages 267-280 doi: 10.1007/s11709-012-0170-x

Abstract: a TMD, such as the optimal tuning frequency and optimal damping ratio, to stationary Gaussian white noise

Keywords： tuned mass damper     parametric optimization     passive control     white noise     earthquake excitation    

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Multi-UAV cooperative target tracking with bounded noise for connectivity preservation

Rui Zhou, Yu Feng, Bin Di, Jiang Zhao, Yan Hu,jzhao@buaa.edu.cn

Frontiers of Information Technology & Electronic Engineering 2020, Volume 21, Issue 10,   Pages 1413-1534 doi: 10.1631/FITEE.1900617

Abstract: We investigate cooperative target tracking of multiple unmanned aerial vehicles (UAVs) with a limited communication range. This is an integration of UAV motion control, target state estimation, and network topology control. We first present the communication topology and basic notations for , and introduce the distributed . Then, convergence and boundedness of the estimation errors using the filter are analyzed, and potential functions are proposed for communication link maintenance and collision avoidance. By taking stable target tracking into account, a distributed potential function based UAV motion controller is discussed. Since only the estimation of the target state rather than the state itself is available for UAV motion control and UAV motion can also affect the accuracy of state estimation, it is clear that the UAV motion control and target state estimation are coupled. Finally, the stability and convergence properties of the coupled system under are analyzed in detail and demonstrated by simulations.
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A 0.20–2.43 GHz fractional-

Wei Zou, Daming Ren, Xuecheng Zou,weizou@hust.edu.cn,damingren@hust.edu.cn,estxczou@hust.edu.cn

Frontiers of Information Technology & Electronic Engineering 2021, Volume 22, Issue 2,   Pages 141-286 doi: 10.1631/FITEE.1900653

Abstract: VCOs that determine the out-band of a phase-locked loop (PLL) based are optimized using an automaticmismatch suppression architecture is proposed to improve the current match of the CP and reduce the PLL phase

Keywords： Frequency synthesizer     Charge pump (CP)     Voltage-controlled oscillator (VCO)     Current mismatch     Phasenoise    

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Numerical analysis of aerodynamic noise radiated from cross flow fan

CHEN Anbang, LI Song, HUANG Dongtao

Frontiers in Energy 2008, Volume 2, Issue 4,   Pages 443-447 doi: 10.1007/s11708-008-0063-9

Abstract: calculated pressure fluctuations of the blades, the vortex wall, and the rear wall were then used as noiseThe Ffowcs Williams-Hawkings (FW-H) equation was employed to predict the noise field caused by thesepredictions show that the rear wall and the vortex wall sources contribute significantly to the total noiseand that both the predicted aerodynamic performance and noise agree well with the experimental results

Keywords： predicted aerodynamic     Williams-Hawkings     calculated pressure     aerodynamic performance     unsteady Reynolds-averaged    

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Air-borne noise of thermal module and system for notebook personal computers: experimental study

SHI Junye, JIANG Cailing, QIAO Junsheng, CHEN Jiangpin, LI Xiaoping, ZHANG Xiaojun

Frontiers in Energy 2008, Volume 2, Issue 2,   Pages 174-178 doi: 10.1007/s11708-008-0034-1

Abstract: Because the fan causes air-borne noise and affects the user’s comfort, the acoustic characteristics ofExperiments were conducted to study the noise sources, the noise characteristic and the main factorsinfluencing the noise level.The difference between the air-borne noise of the thermal module and the whole computer system was analyzedThe influence of I/O ports on the air-borne noise was also studied experimentally.

Keywords： air-borne     attention     propagating     characteristic     personal computer    

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Microfluidic production of liposomes through liquid–liquid phase separation in ternary droplets

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 6,   Pages 1017-1022 doi: 10.1007/s11705-021-2118-y

Abstract: For demonstration, we used butyl acetate-water-ethanol ternary mixtures as inner phase and an aqueoussolution of surfactants as outer phase to make oil-in-water droplets, which can evolve into water-in-oil-in-waterdouble emulsion droplets by liquid–liquid phase separation of ternary mixtures.

Keywords： microfluidics     liposomes     ternary droplets     phase separation    

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Title Author Date Type Operation

Dual-Comb Ranging

Zebin Zhu, Guanhao Wu

Journal Article

A Realization to Enhance the Signal Noise Ratio With Superposition on the Same Phase Signal

Han Xiuting,Wang Jiechun,Jiao Zhenqaing,Gao Fei,Song Yubo

Journal Article

Design of noise-reduction seats for high-speed trains

Xiaojun DENG, Yanju ZHAO, Haijin ZHANG, Renzhong SHUAI, Leiwei ZHU

Journal Article

Anovel approach of noise statistics estimate using H∞ filter in target tracking

Xie WANG,Mei-qin LIU,Zhen FAN,Sen-lin ZHANG

Journal Article

Ambient Noise Tomography for Coral Islands

Shaohong Xia, Changrong Zhang, Jinghe Cao

Journal Article

Investigation of flow dynamics and decrease of vortex noise inside volute of centrifugal fans

LI Chunxi, WANG Songling

Journal Article

Application of python-based Abaqus preprocess and postprocess technique in analysis of gearbox vibration and noise

Guilian YI, Yunkang SUI, Jiazheng DU

Journal Article

Performance research on anti-noise FM jamming of pseudo-random code phase modulation and sine FM combined

Tu Youchao,Zhao Huichang,Zhou Xingang

Journal Article

Integrated virtual-design methods for forecasting radiated noise of single cylinder diesel block

GUO Lei, HAO Zhiyong, XU Hongmei, LIU Lianyun

Journal Article

of structural responses using an optimal passive tuned mass damper under stationary Gaussian white noise

Min-Ho CHEY, Jae-Ung KIM

Journal Article

Multi-UAV cooperative target tracking with bounded noise for connectivity preservation

Rui Zhou, Yu Feng, Bin Di, Jiang Zhao, Yan Hu,jzhao@buaa.edu.cn

Journal Article

A 0.20–2.43 GHz fractional-

Wei Zou, Daming Ren, Xuecheng Zou,weizou@hust.edu.cn,damingren@hust.edu.cn,estxczou@hust.edu.cn

Journal Article

Numerical analysis of aerodynamic noise radiated from cross flow fan

CHEN Anbang, LI Song, HUANG Dongtao

Journal Article

Air-borne noise of thermal module and system for notebook personal computers: experimental study

SHI Junye, JIANG Cailing, QIAO Junsheng, CHEN Jiangpin, LI Xiaoping, ZHANG Xiaojun

Journal Article

Microfluidic production of liposomes through liquid–liquid phase separation in ternary droplets

Journal Article