星历数据

利用解析得到的实时GPS观测数据和星历数据，进行实时的卡尔曼滤波单点定位。

Implemented real-time point positioning by Kalman filter using the real-time GPS observation and ephemeris data decoded from board . 4 .

主要探讨了多种型号GPS接收机联合布设控制网的原理及可行性，介绍了野外星历数据采集及数据后处理的方法和技巧。

This article mainly discusses the theory and feasibility of setting control network using multi-model GPS receiver . It introduces the methods and skills of the field collection and post processing for the Ephemeris data .

应用GRACE卫星星历数据反演地球重力场模型

Gravity Field Model Recovery Based on GRACE Ephemerides

首先，在深入研究了导航电文帧结构的基础上，以ICD-GPS-200规范为依据，对导航电文中所包含的星历数据进行了解析，将所得数据作为求解卫星瞬时位置的依据。

Firstly , based on the study of the structure of Navigation message frame , according to ICD-GPS-200 norm , the ephemeris data in navigation message are interpreted and used as the foundation of solving the instantaneous location of satellite .

最后，本论文分析了有关象素定位误差源，指出增加地球模型描述的精确性、改进星上处理器对星历数据的记录精度，将会进一步提高绝对定位精度。

In the end , the analysis of error sources and the method of further improving location accuracy are given .

最后，分析得出本文定位模型的定位精度主要取决于地球模型的有效性、斜距和多普勒参数测量的准确性以及卫星星历数据的精确度等。

Finally , after analysis , the positioning accuracy of the positioning model in this paper is mainly influenced by effectiveness of the earth model , slant range , and the accuracy of both Doppler parameters measurement and satellite ephemeris data .

分析卫星运行原理，研究了卫星星历数据与观测数据的生成的数学原理，编制程序模块实现了这些数据的仿真。

The most important context of this paper is : ( 1 ) Analysis of principle of satellite motion , analysis of GPS ephemeris data and observation data , designing of the model which can generate simulated ephemeris data and observation data .

针对低成本的JupiterGPSOEM板接收机，直接根据星历原始数据和接收机原始观测数据以及GPS定位技术的理论进行了GPSOEM板的伪距与载波相位定位软件的开发。

To Jupiter GPS OEM board receiver of the low cost , the software was developed according to the original data of satellite , the primitive observation data of receiver and GPS theory of technology based on GPS Pseudo-range observation and Carrier phase measurement .

不同卫星星历对GPS数据处理的影响

The Effect of Different Ephemeris on the Exactness of GPS Data Processing airborne ECM set for self defence

GPS/GLONASS组合导航中的星历计算与数据融合

Orbit Computation and Data Fusion of GPS / GLONASS Integrated Navigation System

若使用IGS预报星历代替广播星历数据进行导航定位计算，可以使定位精度提高5m。

If IGS predicting ephemerides are applied to navigation calculation instead of the broadcast ones , the positioning accuracy can be increased by 5 m.

而我们在利用GPS广播星历参数及用户算法计算卫星坐标的过程中，会遇到因星历数据不完整使卫星坐标精度大大降低的情况，如何解决这个问题也是值得探讨的。

When we calculate satellite coordinates in the use of GPS broadcast ephemeris parameters and user algorithm , we may meet the condition that satellite coordinates accuracy is greatly reduced because of the missing data . How to solve this problem is worthy of discussion .