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w equation
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  w方程
     However,a set of modified C W equation is presented to avoid a defect of the original C W equation.
     作者给出了一组修正的C-W方程以弥补其不足;
短句来源
     With the satellites circle formation as background,the C W equation in discrete time is derived,the measurement equation is given with the position coordinates as measurement variables,and Kalman filter is utilized for the estimation of relative orbit.
     结合空间圆形的编队飞行星座 ,本文给出了描述卫星近距离运动的 C- W方程 ,讨论了空间圆形的编队卫星星座的构成 ,进而设定了利用激光仪测量星间位置矢量 ,并设计了 Kalm an滤波器来实现相对轨道的确定。
短句来源
     With the aid of Mathematica,some new solitary wave solutions and periodic wave solutions of RLW equation are obtained by truncated adjunct function method,which modifies and perfects the known results. 
     利用一种截尾辅助函数法,借助于计算机代数系统Mathematica得到了R-L-W方程的新的孤子解和周期解,修正和完善了已知的结果.
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  相似匹配句对
     equation
     方程(之3)
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     ON THE EQUATION
     关于方程ф(x)=ф(y)
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     With optimization, the equation of T.
     采用最优化计算方法,对T.
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     Power Equation and Its Application
     功率方程及其应用
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  w equation
Later, Levy-Leblond 3 obtained similarly gs2 but from a ss1r2 non-relativistic wave w equation.
      
Correspondingly, the buoyancy term in the w equation is also evaluated in the small steps.
      


The relative motion of two spacecrafts between two near circular orbits is described the linearized C-W equations. The problem of minimumfuel and fixed-time rendezvous of two spacecrafts under the constant-thrusl is discussed and an algorithm calculating the directions and the switch function of optimal thrusts is obtained on the basis of the linearized equations.

邻近近圆轨道上两个飞行器的相对运动可以用线性化C—W方程描述。本文利用线性化C—W方程研究了常推力作用下两个飞行器的固定时间最省燃料交会问题,给出了最优推力作用的开关函数和最优推力方向的计算方法。

Co located geostationary satellites are described as a group of GEO satellites that share the same nominal longitude and a common control box of typical ±0 1° in latitude and longitude.It's convenient to study relative motions in a reference orbital coordinate system using Clohessy Wiltshire equation,provided that the reference orbit is a standard geostationary orbit.However,a set of modified C W equation is presented to avoid a defect of the original C W equation.The satellites follow...

Co located geostationary satellites are described as a group of GEO satellites that share the same nominal longitude and a common control box of typical ±0 1° in latitude and longitude.It's convenient to study relative motions in a reference orbital coordinate system using Clohessy Wiltshire equation,provided that the reference orbit is a standard geostationary orbit.However,a set of modified C W equation is presented to avoid a defect of the original C W equation.The satellites follow a combined eccentricity and inclination vector separation strategy,so that the group geometry can be expressed simply by the orbital elements of each member.The group geometry in space (or reference to ground station)can be keeped unchanged with a simple modification of the orbital elements of each member.

共享星位式静止轨道卫星群(Co-locatedGeostationarySatelites)共占一个星位以完成对地通信任务。在这种共享星位的方式下每颗卫星间的位置差异很小,整个卫星群在经度和纬度方向上的允许偏差通常小于±0.1°。在这个范围内必须对卫星精确控制。经典的C-W方程形式简单,便于分析,但它的结果不能精确地反映卫星的相对运动,因而不宜用来研究共位式静止卫星群的几何构形及其控制。作者给出了一组修正的C-W方程以弥补其不足;并且根据卫星群偏心率与倾角综合的分离思想,讨论了两种策略,使得卫星群的构形可通过每个成员的轨道要素简单表出。适当调整每颗卫星的轨道要素可以保持卫星群的构形在空间不变,或者对地(近赤道观测站)不变。

A baroclinic typhoon model with a moving triple-nested grid has been applied for marine envi- ronmental forecasts in the National Marine Environmental Forecasting Center of China. The governing equa- tions of the model and the numerical methods have been described in the first part of this paper. An outline of the model grid, variational adjustment initialization and forecast experiments will be continued in the paper. The outmost region with coarse grids is fixed and the inner fine resolution regions follow...

A baroclinic typhoon model with a moving triple-nested grid has been applied for marine envi- ronmental forecasts in the National Marine Environmental Forecasting Center of China. The governing equa- tions of the model and the numerical methods have been described in the first part of this paper. An outline of the model grid, variational adjustment initialization and forecast experiments will be continued in the paper. The outmost region with coarse grids is fixed and the inner fine resolution regions follow the track of typhoon center. In the model, variables at the coarse and fine grid. interact through two-way coupling. The equilibrium equation and the w-equation, an idealized typhoon field and variational adjustment scheme are used for initial- ization of the typhoon model. Prediction results are improved by using a simple but effective data assimilation method in which the initial fields are adjusted by using a simple but effective data assimilation method in which the initial fields are adjusted by using the sixth hour's typhoon report and the week-constraint varia- tional principle. Finally the results of the forecasts are shown in the paper. The .statistics of the forecast errors show that the model has certain capability to predict typhoon tracks and gives good results for surface wind and pressure forecasts. And the typhoon model has been linked with a sea-wave model and satisfactory fore- cast for wave height has been gotten.

一种斜压多重移动套网格台网模式在国家海洋环境预报中心已被应用于海洋环境预报。本文第一部分已描述了模式方程组和数值方法。本文继续概述模式网格、变分调整初始化和预报试验结果。最外粗网格域固定,内部细网格域随台风中心轨迹移动。模式中,粗细网格变量采用双向耦合。平衡方程和方程,理想台风场和变分调整方案被用于台风模式初始化。一种简单而有效的资料同化方法,即用第6h台风报和弱约束变分原理调整初始场,被应用于提高预报结果。最后本文给出预报试验结果。预报误差统计显示本模式对台风路径预报具有相当能力,而且可以提供海面风和气压场较好的预报。本模式已经与海浪模式联结,得到满意的波高预报结果。

 
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