精密星历

本文研究的结果提供了一套由精密星历计算轨道参数的方法及一套各个GPS卫星在一个较长时间段内各历元时刻的轨道参数，为进一步的研究提供数据。

The result of this study provides a method calculating GPS satellite orbit parameters through IGS precise ephemerides . Orbit parameters of each GPS satellite at each epoch over a long period are calculated , which can be used for further research .

广播星历和精密星历解算GPS基线成果的比较分析

Comparison of Broadcasting Ephemeris and Precise Ephemeris on GPS Baselines Processing

GPS精密星历插值方法的比较研究

The Comparison Research on GPS Precise Ephemeris Interpolation Methods

基于IGS精密星历的GPS卫星轨道分析

GPS Satellite Orbit Analysis Based-on IGS Precise Ephemerides

青藏高原地壳运动与形变的GPS研究&第1期观测的精密星历解

Study on the Crust Movement & Deformation in QH-XZ Plateau via GPS Observation ── the Solution Using Precies Ephemeris for the First term Observation

IGS提供的精密星历描述了GPS卫星在地固系中的三维位置。

GPS satellite precise ephemerides provided by IGS describe there dimension position of GPS satellites in ITRF .

考虑到GPS卫星的设计轨道具有明显的周期性，用三角函数多项式方法进行精密星历插值，并与经典的拉格朗日插值方法进行了比较。

On the basis of the periodicity of the designed orbit of GPS satellite , trigonometric function polynomial interpolation method is used to interpolate the IGS precise ephemeris .

IGS精密星历和钟差插值方法的研究

Research on interpolation method for IGS precise ephemeris and clock bias

基于IGS精密星历的卫星坐标和钟差插值

The Interpolation Methods for Satellite Coordinate and Clock Offset Based on IGS Precise Ephemeris

IGS精密星历的误差分析

Error analysis of IGS Precise Ephemeris

以IGS精密星历为基础，分析了IGR星历和IGU星历的精度。

The precision of IGR ephemeris and IGU ephemeris is analyzed through IGS precise ephemeris .

根据导航电文中的广播星历和IGS提供的精密星历对GPS共视比对结果中的几何时延误差进行了改正。

The geometric delay errors for GPS common view time comparison between remote clocks are corrected according to broadcasting ephemeris of navigation information and precise ephemeris that IGS provides .

重庆市GPS监测网观测资料，利用GAMIT/GLOBK9.93（Linux）软件进行数据处理，采用松弛解处理模式和精密星历，并利用IGS跟踪站进行约束。

Observation data are processed by GAMIT / GLOBK 9.93 ( Linux ) software , which is adopted relax calculation dealt mode and precise ephemeris , proceed bind with IGS track station .

广播星历表与MEDOC精密星历表的比较

Comparison of the broadcast ephemeris and the Medoc precise ephemeris

在此基础上，采用JPL提供的间隔为30s的sp3事后精密星历和卫星钟差，对GPS双频相位平滑伪距及其单点定位的精度进行了研究。

Based on this modified Hatch-type filter and precise ephemeris , the accuracy of GPS dual frequency phase-smoothed pseudorange and its point positioning is researched .

对只接收到一组GPS卫星广播星历的情况下应用广播星历拟合计算卫星在轨位置的方法进行了研究，通过与精密星历进行比较，对拟合计算的精度进行了说明。

A method of GPS satellite orbital coordinates calculating with Chebyshev Polynomial Simulation was devised in this paper based only on receiving a group of GPS broadcast ephemeris . By comparing with GPS precise ephemeris , the accuracy of calculation was analyzed .

同精密星历相比，2天轨道弧段的定轨精度为1～4m（坐标中误差）。

Compared with the precise orbit , the accuracy of the determined 2 day arcs of the orbits is 1 ~ 4m ( standard deviation in coordinates ) .

本文还重点考虑到卫星位置对非差单点定位的影响，采用内插IGS精密星历，使得程序运行更简单，更具有实用性。

In this approach , the IGS precise orbits and satellite clocks are used together for single point positioning to make the program run more simple and more practical .

采用美国喷气推进实验室JPL发展的GIPSY软件解算区域GPS网，比较了固定精密星历和同时固定精密星历及卫星钟参数2种解算方案。

Based on the GIPSY , a GPS data analysis software package developed at JPL , the strategies of fixed precise orbits and fixed precise orbits and clocks for regional GPS data analysis are compared .

结果表明，对800～3000km的GPS基线，利用精密星历计算，边长及其经纬度分量重复测量精度可达10－8～10－9；

The results show that for baselines of 800 ~ 3000 km the repeatability of baseline lengths and their latitude and longitude components is 10 - 8 ~ 10 - 9 as calculated with precise ephemerides ;

本文详细地介绍了目前发展较迅速的与IGS跟踪站联测并利用精密星历进行精密相对定位技术，并通过具体的实例进行深入地分析和比较。

The paper introduced in detail the techniques of joint measurement with IGS tracing station and using precision star calendar for precision relative positioning that currently have been rapidly developed and further carried out the analysis and comparison by using concrete cases .

通过比较广播星历和IGS（国际GPS服务机构）目前提供的3种精密星历的精度和时延性，得出只有超快星历（IGU）才能满足对流层监测的时间要求。

Through comparing the accuracy and latency of broadcast ephemeris and three kinds of precise ephemeris provided by IGS ( the International GPS Service ), it was found that only IGS ultra rapid products ( IGU ) can meet the need for time of tropospheric monitoring .

建立同步卫星精密星历表的最佳数值方法

The Best Numerical Method for Making Precise Ephemeris of Synchronous Satellite

广义延拓插值在卫星精密星历插值中的应用

Application of Generalized Extended Interpolation Method in Precise Ephemeris Interpolation

利用精密星历进行单点定位的数学模型和初步分析

The Model of Single-point Positioning by Use of Precise Ephemeris and Result Analysis

快速精密星历替代精密星历定位的初步研究

Preliminary Study on Rapid Ephemeris Replacing the Precise Ephemeris in GPS Locating Calculation

一种卫星精密星历的插值方法

An Interpolation Method for High Precision Satellite Ephemeris

实例分析了广播星历和精密星历对于不同长度基线相对定位精度的影响。

Through example , analyzing positioning precise influence which broadcast ephemeris and precise ephemeris process different length baselines .

同时，精密星历的使用及更完善的误差模型修正也使得动态定位后处理在定位精度方面更具优势。

Also , the use of the precise ephemeris and better error correction model makes the Post-Processing has certain advantages in terms of positioning accuracy .

详细分析了其中的技术细节，包括精密星历产品的使用、动力学模型的数值积分算法以及滤波器的详细设置，给出了实时定轨算法的流程。

The technical details are carefully analyzed , including the use of precise ephemeris products , numerical integration algorithm of dynamic model and explicit filter settings , also the overall algorithm flow .