查询词典 coupling

An algorithm to resolve the coupling effect problem is proposed during the cross point assignment stage.

提出了一种在过点分配阶段解决噪声耦合效应问题的算法。

The main job and contribution of this paper are as follows:Based on narrowband signal processing, we propose a new method for FH signal blind detection and blind parameter estimation. Firstly, compute the cross-correlation function of FH signals from multichannels, then we get the cross power spectral density matrixCSDM Secondly, select the hops of FH signals from the CSDM via processing and analyzing the CSDM, meanwhile reduce the influence coming from noise, fixed frequency signal and other interferences; Lastly, estimating the DOA of every hop and according to the DOA, we can separate the hops, get the number of FH signals and their parameters. Propose a new method for designing the threshold in FH signal detection. This method makes it easy to get the threshold by theoretic computing and it can extremely reduce the interference of non-FH signals.Based on broadband signal processing, we propose a new method for FH signal blind detection and blind parameter estimation. Firstly, get the DOA of the signals by wideband spatial spectrum estimation; secondly, separate the signals by spatial filtering using wideband beamformer; Lastly, we propose two methods for FH signal blind detection and blind parameter estimation, one is for several constant hop-rate FH signals whose dwell-time are different and another is for a single FH signal whose hop-rate is alterable.By employing spatial interpolation in broadband signal beamforming, it can reduce the number of antenna elements and corresponding RF modules, A/D converters, etc. It can also eliminate the mutual coupling between antenna elements while getting the narrower main beamwidth and lower sidelobe level.

本文的主要研究工作和贡献如下：●提出了一种基于窄带处理的FH信号盲检测和参数盲估计的实现方法，即首先求出多路信号之间的互相关，进而得到互功率谱密度矩阵，然后通过对CSDM进行对折处理来抑制噪声、定频信号及其他干扰的影响，并将所有属于FH信号的hop(每一跳的驻留时间在时频图上持续的线段)从CSDM中筛选出来，最后用阵列信号处理中的到达方向估计理论在频域中估计出各个hop的方向参数，利用方位信息完成FH信号分离并得到FH信号的数目及其各自的参数集；●提出了一种确定FH信号检测门限的策略，该策略不仅使得检测门限能够通过理论计算得到，而且还显著地抑制了非跳频信号的干扰，从而能有效地检测出FH信号；●提出了一种基于宽带处理的短波FH信号盲检测和参数盲估计的实现方法，即首先利用宽带空间谱测向技术得到接收信号的DOA，然后采用宽带波束形成技术对特定方向进行空间滤波，实现多个信号的分离，最后分别提出了两种FH信号的盲检测和参数盲估计方法，第一种方法适用于空间某个特定方向上存在着几个驻留时间不同的恒跳速FH信号和其他干扰信号的混合信号，第二种方法适用于空间某个特定方向上仅含一个可变跳速的FH信号和噪声的混合信号；●将空间插值的概念和宽带波束形成技术结合起来，提出了一种基于频域处理的宽带恒定束宽的波束形成方法。

When the crosshead coupling is in the application, the kinematics model can be made by applying the principle of mechanism.

用机构学原理，建立了滑块联轴器及其应用时的运动学模型，分析了其产生的位移、速度、加速度和惯性力等运动学问题，并推导出相应的计算公式。

The coupling stiffness and damping coefficients of the thrust bearing under the crosswise vibration of the rotor were studied.

对推力轴承在转子横向振动下的偶合刚度和阻尼系数进行了系统的研究。

Crosswise coupling disturbance of a loading system with multiple degree of freedom is analyzed.

针对多自由度加载系统中存在的横向耦合干扰问题进行了理论分析，推导出横向耦合干扰的数学计算公式，并提出了横向耦合干扰的补偿方案

The body, back, coupling and croup must all be short to give the required square build.

身体，背，腰和臀部必须短，以保持方形的体型。

Crown gear coupling is an important elementary assembly in mechanical transmission, used in mechanical equipment widely.

鼓形齿联轴器是机械传动的重要基础部件，在机械设备中广泛应用。

The main work of this paper includes:① The calculation of the structure parameters and 3D modeling in I-DEAS of the crown gear coupling are carried on.

本文的主要研究内容有：①对鼓形齿联轴器进行结构尺寸设计计算，应用I-DEAS 软件对鼓形齿联轴器进行三维实体造型。

The transmission properties of crown gear coupling are analyzed comprehensively. The crowning curve and the gear parameters are optimized.

本文较全面地分析了鼓形齿联轴器的传动特性，提出了鼓形齿轮鼓度曲线及齿轮参数优化设计新方案。

From the experiment on multitooth mesh, several valuable results are obtained. It is verified that the crown gear coupling with optimum crowning curve has advantage in transmission properties.

进行了鼓形齿联轴器多齿啮合实验，得出若干有价值的实验结论，并通过实验，验证了优化鼓度曲线的鼓形齿联轴器具有优越的传动特性。

He has to relate with three women in the movie, and yet remain implicitly faithful to the unseen Lucinda.

让克劳德布里亚里成功地饰演试验了一个难度很大的角色：和三个女人打交道，但还要底下对观众未曾谋面的卢馨达保持忠诚。

The experiment was conducted to study effects of inulin on the growth performance, indices of immune organs and serum immunoglobulin of laying chicklings as well as the performance of inulin which replaced the antibiotics in diets by adding 0.2%, 0.4% and 0.8% of inulin, respectively.

试验旨在通过在蛋用雏鸡日粮中添加0.2%、0.4%和0.8%的菊粉，研究菊粉对蛋雏鸡生长性能、免疫器官指数和血清免疫球蛋白的影响，以及菊粉替代抗生素对蛋雏鸡的应用效果。