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差分修正
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  differential correction
     The design scheme of the DGPS reference station based on cheap GPS OEM is proposed. This kind of DGPS reference station is composed of GPS OEM and microprocessor. The general GPS receiver only can receive the RTCM SC 104 differential correction message, so the binary correction message output by GPS OEM must be encoded into the RTCM SC 104 standard format. The DGPS positioning experiment was made.
     介绍了差分GPS(DGPS)的定位模型以及RTCMSC 1 0 4数据格式及其电文编码 ,提出了利用廉价的GPS OEM(原始设备制造商 )建立基准站的设计方案 ,方法是利用GPS OEM和微处理器构成硬件系统 ,利用GPS OEM输出的二进制差分修正数据 ,将其编码为RTCMSC 1 0 4电文来进行设计 .
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  “差分修正”译为未确定词的双语例句
     Monitor center receives the data from moving stations, analyses them,locates the vehicle, and displays it on screen.
     监控中心的主要功能是:接收各移动站的数据,进行集中差分修正得出车辆的位置坐标,在电子地图上显示该车的位置;
短句来源
     Monitor center sends the dispatching plan to the moving station and receives the data from moving station, analyses them, locates the locomotive, and displays it on the screen.
     监控中心的主要功能是:发送各调车机的调车任务勾计划、接收各移动站的数据,进行差分修正得出车辆的位置坐标,在电子地图上显示该车的位置;
短句来源
     We can get the real differential value of a sampling point by amending the difference of the point. It means we can achieve the same precision as using high sampling rate by this means. In addition.
     通过正弦差分修正系数α来加以修正测量信号某一点处的差分,可以得到该点处微分的真值,使得对于采样率较低的数据采集系统而言,使用经过修正后的值进行计算,仍然可以取得与采样率较高时同样的精度。
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     So long as having Internet place of network, user can have to go to difference assign and revise serving through Internet enhancement network (IBAN ) of network.
     只要有Internet网的地方,用户就可以通过Internet网的增强网络(IBAN)得到差分修正服务。
短句来源
     In this paper, the mathematical models and data processing methods for Wide Area Differential GPS (WADGPS) have been discussed in detail, The relevant softwares used for determining differential corrections of ephemeris, satellite elock errors and ionosphere delay and for positioning of WADGPS have been developed.
     详细讨论了广域差分GPS数据处理的数学模型和方法,就实际观测数据,用作者研制的软件确定差分修正信息并提供给用户站定位。
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     不可压缩核废料污染问题的修正迎风差分
短句来源
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  differential correction
The numerical results show that the new approach can be efficiently used for solving the problem of differential correction of orbits of asteroids and comets on the basis of observational data.
      
A differential correction using Lieske's analytical theory was applied for a 100-year time interval, and a new system of initial parameters was obtained for numerical simulation of the motion of Jupiter's Galilean satellites.
      
The method of calculating the nonlinear aerodynamic characteristics of objects from trajectory data, based on the differential correction principle, is well known [N.
      
The solution results of observation data in two successive days are processed by a method, which combines the wavelet filtering and the differential correction between two successive days.
      
DCR2 combines the advantages of the Remez Second Algorithm (R2) and the Differential Correction Method (DC), achieving the best approximation when both DC and R2 either produce noticeably suboptimal results on the interval or fail to converge.
      
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  difference correction
We derive results for the existence of the expansion and for the application of the classical difference correction and of defect correction.
      
Thus we may use "nonstiff" multistep methods with an appropriate stabilizing difference correction applied to the Lagrangian multiplier term.
      
Data were compared using a multiple comparisons ANOVA with post-hoc least square difference correction.
      
Histogram of RMS of phase clock difference correction estimation per epoch difference.
      


A new coorolinate reduction method for solving the differential/algebtaic equationsof motion of multi-body systems is presented. The augemented equations are transformed to Unoverdeterimined systems by using matrix decomposition method. Then by using the Taylor expansion, Newton iteration and modified difference methods, the authors obtain the responses of the system. Finally a numerical example of a two link manipulator is prsesnted.

提出了多体系统动力学微分/代数方程组初值问题的一类编并数值积分方法.首先通过矩阵正交分解法对增广系统转化为非超定系统,然后用Taylor展开法将其改写为可交替迭代的格式,并用Newton迭代与差分修正求得系统响应.文末通过对平面二连杆操作手仿真验证了算法的有效性.

The common errors can be eliminated by differential technique in DGPS,which can improve the precision of positioning greatly.In this paper,according to the new GPS configuration of 24 working satellites,simulation of DGPS is studied.The research includes calculation of GPS satellites' orbit parameters,calculation of pseudoranges,not only in the base reciever but also in the user's reciever,distinguishment of visible satellites,selection of four optimatic satellites of positioning,generation of differential pseudorang...

The common errors can be eliminated by differential technique in DGPS,which can improve the precision of positioning greatly.In this paper,according to the new GPS configuration of 24 working satellites,simulation of DGPS is studied.The research includes calculation of GPS satellites' orbit parameters,calculation of pseudoranges,not only in the base reciever but also in the user's reciever,distinguishment of visible satellites,selection of four optimatic satellites of positioning,generation of differential pseudorang signals and correction of pseudoranges in user's reciever.Under the condition of laboratory,the DGPS simulation system can be replaced by actual DGPS to do some other research that are concerned with DGPS technique.

差分GPS就是利用差分技术消除GPS测量误差中的公共误差,使用户的导航定位精度得以提高本文研究差分GPS的模拟仿真,采用24颗GPS工作卫星的新布局,就卫星的运行轨迹、基准台接收机的伪距、用户接收机的伪距、可见星的选择、最佳四颗导航星的选择以及伪距差分信号的产生和用户伪距差分修正这几个方面分别进行了仿真研究此仿真系统可代替实际系统在实验室条件下进行差分GPS技术方面的各种研究工作

In this paper, the mathematical models and data processing methods for Wide Area Differential GPS (WADGPS) have been discussed in detail, The relevant softwares used for determining differential corrections of ephemeris, satellite elock errors and ionosphere delay and for positioning of WADGPS have been developed. By making use of these softwares and practical observation data, a engineering testing of WADGPS has been completed.The testing results have shown that the accuraeies can be better than±1. 0 m and±1....

In this paper, the mathematical models and data processing methods for Wide Area Differential GPS (WADGPS) have been discussed in detail, The relevant softwares used for determining differential corrections of ephemeris, satellite elock errors and ionosphere delay and for positioning of WADGPS have been developed. By making use of these softwares and practical observation data, a engineering testing of WADGPS has been completed.The testing results have shown that the accuraeies can be better than±1. 0 m and±1. 5 m for horizontal and vertical postioning respectively.

详细讨论了广域差分GPS数据处理的数学模型和方法,就实际观测数据,用作者研制的软件确定差分修正信息并提供给用户站定位。结果表明,软件可以保证平面位置精度优于1m,高程精度在1.5m左右。

 
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