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| 1 | Principle and simulation of coherent interference suppression by a three-sensor array显示文摘The Principles of coherent interference suppression are presented by a three-sensor array. The formulae of extracting expected signals from strong interference are derived. The selection of sensor space is discussed and then relationships between the space and frequency point, at which the signals can be extracted, are given. When expected signals are band- limit, the conditions of the selected sensor space, which should be satisfied, are given. Lastly, Performance of interference suppression is analyzed when the amplitude of interference power spectra of signals Received by three sensors fluctuates, and the expressions of relative error of the extracted signals and processing gain are derived. The theoretical and simulation results show that signals can be extracted from strong background interference without any information about signals and interference expect for the arriving direction of signals, that the space between sensors should be smaller than half wavelength of upper limit freqency when the expected signals are band-limit, and that performance of extracting signals will decline with the increase of fluctuation of interference spectrum amplitude. | ZHU weijie, SUN Jincai, SUN Yiyuan (Institute of Acoustic Engineering, Northwestern Polytechnical University Xi’an 710072) | 2002 | Chinese Journal of Acoustics2002，21，2： | 10 |
| 2 | Parameter estimation of sinusoidal signals by using principle of signal matched-phase显示文摘A method for estimating frequency, amplitude and phase of a sinusoidal signal is presented based on the principle of signal matched-phase. The formulae for estimating signal parameters are derived, and the algorithm of searching for signal parameters is also given in the case where the signal frequency is unknown. The algorithm is simple and time_saving. The simulation results show that this new method is valid. | ZHU Weijie , SUN Yiyuan, SUN Jincai and LI Zhishun(College of Marine Engineering, Northwestern Polytechnical University, Xi’an 710072, China) | 2002 | Progress in Natural Science:Materials International2002，12，4： | 10 |
| 3 | Photocatalytic debromination of decabromodiphenyl ether by graphitic carbon nitride显示文摘The graphitic carbon nitride(g-C3N4) is found to be an efficient photocatalyst for the reductive degradation of decabromodiphenyl ether(BDE209) under UV irradiation(>360 nm).g-C3N4 was prepared by heating dicyandiamide.X-ray diffraction,X-ray photoelectron spectroscopy,and UV-vis spectra were used to characterize the properties of as-prepared catalysts.The photoreductive degradation kinetics of BDE209 was further investigated under different reaction conditions.The degradation of BDE209 is a stepwise process,and the bromines at meta positions are much more susceptible to remove than those at the ortho and para positions.A possible photoreductive mechanism was also proposed. | SUN ChunYan CHEN ChunCheng MA WanHong ZHAO JinCai | 2012 | Science China Chemistry2012，55，12： | 8 |
| 4 | Modification of energy balance equations in Statistical Energy Analysis显示文摘The energy balance equations in the Classical Statistical Energy Analysis (CSEA) are modified by the equations of power flow among the thtee serial coupled oscinators. The modified equations include not only the direct power flow, but also the indirect power flow. The parameters in the modified equations can be expressed by those in the classical equations when the accuracy of the predicted results is able to satisfy the needs for ellgineering. | SUN Jincai WANG Chong and SUN Zhaohui (Institute of Acoustic Engineering Northwestern Polytechnical University Xi’an, 710072) | 1996 | Chinese Journal of Acoustics1996，15，1： | 7 |
| 5 | Design theory and experimental investigation of the low frequency and high power rare earth magnetostrictive flextensional transducer (Ⅰ). Theoretical part显示文摘The energy relationships among all the elements, by which the magnetostrictive transducers are manufactured, in Finite Element Method (FEM) are analyzed, then the expres- sions of FEM dynamics equations and performances formulas for magnetostrictive transducers are derived. The vibrating modes of the class VII transducer and its shell vibration are calcu- lated theoretically and the results point out that there is a breathing mode and if the transducer works at this mode, the transducer will vibrate with a greater volume speed and source level. | HE Xiping (Applied acoustic institute, Shaanxi Teachers University Xi’an 710072) (College of Marine Engineering Northwestern Polytechnic University Xi’an 710O72) SUN Jincai LI Bin (Colloge of Marine Engineering Northwestern Polytechnic University Xi’an 71 | 2001 | Chinese Journal of Acoustics2001，20，4： | 6 |
| 6 | Power flows of three non-conservatively series-coupled oscillators, Part Ⅱ: Numerical analysis显示文摘The direct and indirect power flows among three non-conservatively series-coupled oscillators subjected to random forces have been investigated by the numerical method. The relationship between the power flows and the parameters of the oscillators and couplings have been studied. It is shown that the indirect power flow is caused by the resonant transmission between the indirectly coupled oscillators. Once the parameters of the oscillator elements have been settled, the indirect power flow is mainly determined by the coupling stiffness k3 and k4, and is less infiuenced by coupling dampings c3 and c4. The indirect power flow cannot be ignored in strong coupling conditions. Because of the resonant transmission between the indirectly coupled oscillators, the indirect power flow still cannot be neglected even if the coupling stiffness is relatively small and the coupling damping is relatively | WANG Minqing(Xi’an Jiaotong University Xi’an 710049)SHENG Meiping Ren Keming SUN Jincai(Institute of Acoustics Engineering, Northwestern Polgtechnical University Xi’an 710072) | 1998 | Chinese Journal of Acoustics1998，17，3： | 4 |
| 7 | Analysis of the causes of formation of negative loss factors显示文摘Based on classical energy balance equations for two coupled systems in Statistical Energy Analyis (SEA), the possibility of causing negative loss factors in measuring SEA parameters by using the equations is analyzed. The physical causes of formation of negative loss factors are theoretically invstigated by vibration analysis of the two non-conservatively coupled oscillator sets. Mom the analytical results, it is shown that the necessary condition of foedng negatbo loss factors is that the coupling of the coupled systems is non-conservative and strong and the suffiient condition is that the excitation frequency of the external force is not equal to the natural frequencies of the two oscillators at the sam tAne or the parameters of the two oscillators are much different. The absolute values of the negative loss factors increase with the increase of the coupling pararneters. | SUN Zhaohui SUN Jincai WANG Chong and SHENG Meiping(Institute of Acoustic Engineering, Northwestern Polytechnical University Xi’an, 710072) | 1996 | Chinese Journal of Acoustics1996，15，3： | 4 |
| 8 | Vibration power flow in infinite stiffened-plate with force excitation applied on plate显示文摘The formula of the vibration response and power flow in beam-stiffened plate with force excitation applied on.the plate, have been obtained by using the Steepest Descent Integral method. The characteristics of the power flow have been studied through computer simulation.It is shown that the stiffener acts as an extra lineal excitation applied on the plate and changes the characteristics of the power flow of the infinite plate greatly The greater the stiffness and the smaller the distance between the exciting point and the stiffener is, the greater the induence is. Lastly, experiments have been carried out by using the dualaccelerometer measurement technique that based on cross spectrum, and the test data agree well with the theoretical | WANG Minqing (Xi’an Jiaotong University Xi’an 710049) SHENG Meiping SUN Jincai SUN Zhaohui (Institute of Acoustical Engineering, Northwestern Polytechnical University Xi’an 710072) HUANG Xieqing (Xi,an Jiaotong University Xi’an 710049) | 1998 | Chinese Journal of Acoustics1998，17，2： | 3 |
| 9 | The coupling loss factors for non-conservatively coupled structures显示文摘The method to calculate the coupling loss factors for non-conservatively coupled structures by using the mobilities of substructures is studied. By using the form of the energy balance equations of conservatively coupled systems, the relationship between the coupling loss factors and the energy ratios in non-conservatively coupled systems is derived. The method to calculate the energy ratios by using the mobilities of substructures is introduced, and experiment verification is carried out. The test data agree well with the predicted results. | SHENG Meiping(Institute of Acoustic Enmneering, Northwestern Polytechnzcal Uniuersity Xi’an 710072)Wang Minqing(Institute of Vibration and Noise Control, Xi ’an Jiaotong University Xi’an’ 710049)SUN Jincai(Institute of Aconstic Engineering, Northwestern P | 1998 | Chinese Journal of Acoustics1998，17，4： | 3 |
| 10 | Experimental research for direction of arrival estimation based on signal phase matching principle显示文摘为了测试信号阶段匹配的有效性,原则(SPMP ) 把评价用于到达(DOA ) 的方向,实验用 16 传感器数组在一座水库被执行。二种方法,为匹配原则(LSMSPM ) 的信号的最不方形的方法和为匹配原则(SVDSPM ) 的信号的单个值分解方法,被用于 DOA 评价。他们的表演被分析并且与音乐相比并且常规形成横梁(CBF ) 方法。 3 dB 横梁宽度由 SPMP 获得了的结果表演是到像由音乐 method.In 增加, LSMSPM 和 SVDSPM 由 CBF 和 1/2 获得了到 1/3 那一样的 1/7 的 1/4 为多来源 DOA 评价和高度是可得到的分辨率 DOA 评价,它证明由 SPMP 方法的那个 DOA 评价由音乐和 CBF 方法比那好。 | HOU Hong XIAO Hui SUN Jincai | 2007 | Chinese Journal of Acoustics2007，26，1： | 3 |
| 11 | Linear Track Estimation Using Double Pulse Sources for Near-Field Underwater Moving Target显示文摘双脉搏来源(DPS ) 方法在这个工作为线性轨道评价被介绍。在在水下的移动的噪音鉴定的领域里指向, Doppler 将弄歪散发的噪音的频率和振幅。消除这,轨道评价是必要的。在 DPS 方法,我们首先估计通过放方法的基线在动人的目标安装的二正弦曲线脉搏来源的轴承。同时,每脉搏的射出并且记录的时间也被获得。然后,线性磁道参数将在两倍来源间距的帮助下基于几何学模式被完成。模仿的结果证实 DPS 改进以前的双来源间距方法的表演。模仿的实验用一辆动人的电池汽车被执行进一步评估它的表演。当目标离开是 4060m 时,实验结果证明那轨道方位角并且垂直偏导 DPS 的距离分别地在 0.6o 和 3.4m 下面。并且估计的速度的平均偏差在 0.25m/s 附近。 | Zhifei ChenI Hong Hou Jianhua Yang Jincai Sun Qian Wang | 2013 | Journal of Marine Science and Application2013，12，2： | 2 |
| 12 | Effect of six flavonoid compounds from Ixeris Sonchifolia on stimulus-induced superoxide generation and tyrosyl phosphorylation in human neutrophils 显示文摘 | Jincai Lu Xizhi Feng Qishi Sun | 2002 | Clinica Chimica Acta2002，316，： | 1 |
| 13 | Effect of six flavonoid compounds from Ixeris sonchifolia on stimulus-induced superoxide generation and tyrosyl phosphorylation in human neutrophils显示文摘 | Jincai Lu Xizhi Feng Qishi Sun Huangwei Lu Masanobu Manabe Kazunori Sugahara Deshun Ma Yasuhiro Sagara Hiroyuki Kodama | 2002 | Clinica Chimica Acta2002，，1： | 1 |
| 14 | Hydrocarbon Detection Based on Phase Decomposition in Chaoshan Depression, Northern South China Sea显示文摘Located in the northern South China Sea,Chaoshan Depression is mainly a residual Mesozoic depression,with a construction of Meso-Cenozoic strata over 7000m thick and good hydrocarbon accumulation conditions.Amplitude attribute of-90°phase component derived by phase decomposition is employed to detect Hydrocarbon in the zone of interest(ZOI)in Chaoshan Depression.And it is found that there are evident amplitude anomalies occurring around ZOI.Phase decomposition is applied to forward modeling results of the ZOI,and high amplitudes occur on the-90°phase component more or less when ZOI is charged with hydrocarbon,which shows that the amplitude abnormality in ZOI is probably caused by oil and gas accumulation. | Guangjian Zhong Renqi Jiang Hai Yi Jincai Wu Changmao Feng Gang Zhou Kun Wang Lina Liu Ming Sun | 2021 | Journal of Marine Science2021，3，2： | 1 |
| 15 | On the accuracy of the ray-tracing algorithms based on various sound receiver models 显示文摘 | Xiangyang Zeng Ke'an Chert Jincai Sun | 2003 | Applied Acoustics Volume: 64 Issue: 4 April2003，，： | 1 |
| 16 | Treatment of Melasma With Oral Administration of Tranexamic Acid显示文摘 | Sufan Wu Hangyan Shi Hua Wu Sheng Yan Jincai Guo Yi Sun Lei Pan | 2012 | Aesthetic Plastic Surgery2012，，4： | 1 |
| 17 | Effect of six flavonoid compounds from Ixeris sonchifolia on Stimulus-induced superoxide generation and tyrosyl phosphorylation in human neutrophils显示文摘 | LU Jincai FENG Xizhi SUN Qishi | 2002 | Clinica Chimica Acta2002，316，12： | 1 |
| 18 | Active control of vibration using a fuzzy control method显示文摘 | Qu Wenzhong Sun Jincai Qiu Yang | 2004 | Journal of Sound and Vibration2004，275，： | 1 |
| 19 | On the application of wavelet transform to the solution of integral equations for acoustic radiation and scattering显示文摘The application of wavelets is explored to solve acoustic radiation and scattering problems. A new wavelet approach is presented for solving two-dimensional and axisymmetric acoustic problems. It is different from the previous methods in which Galerkin formulation or wavelet matrix transform approach is used. The boundary quantities are expended in terms of a basis of the periodic, orthogonal wavelets on the interval. Using wavelet transform leads a highly sparse matrix system. It can avoid an additional integration in Galerkin formulation, which may be very computationally expensive. The techniques of the singular integrals in two-dimensional and axisymmetric wavelet formulation are proposed. The new method can solve the boundary value problems with Dirichlet, Neumann and mixed conditions and treat axisymmetric bodies with arbitrary boundary conditions. It can be suitable for the solution at large wave numbers. A series of numerical examples are given. The comparisons of the results from new approach with those from boundary element method and analytical solutions demonstrate that the new techique has a fast convergence and high accuracy. | WEN Lihua, ZAHNG Jingmei, SUN Jincai (Department of Civil Engineering & Architecture, Northwestern Polytechnical Universitg Xi’an 710072) | 2002 | Chinese Journal of Acoustics2002，21，2： | 1 |
| 20 | Parameter estimation of sinusoidal signals by least square method based on signal phase matching principle显示文摘 | SUN Jincai ZHU Weijie SUN Yiyuan | 2004 | Progress in Natural Science2004，14，10： | 1 |
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