Auto-BAHN: Software for near real-time GPS orbit and clock computations

被引：34

作者：

Zhang, Q. ^{[1
]}

Moore, P. ^{[1
]}

Hanley, J. ^{[2
]}

Martin, S. ^{[2
]}

机构：

[1] Univ Newcastle, Sch Civil Engn & Geosci, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England

[2] LogicaCMG, Leatherhead KT22 7LP, Surrey, England

来源：

ADVANCES IN SPACE RESEARCH | 2007年 / 39卷 / 10期

基金：

英国工程与自然科学研究理事会;

关键词：

real-time GPS orbit and clock; extended kalman filter; IGS final solution; Auto-BAHN;

D O I：

10.1016/j.asr.2007.02.062

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

The Auto-BAHN software under development at Newcastle University aims to incorporate a near real-time capability for GPS orbits and clocks into the GPS software BAHN, currently in operational use for IGS related activities at ESOC/ESA. As a first step the deterministic least-squares batch processor in BAHN has been replaced by an Extended Kalman Filter facilitating continuous computation of GPS satellite orbits and clocks and other receiver and satellite parameters. In this paper the underlying methodology behind the Extended Kalman Filter approach is introduced as required to handle GPS phase and code data from a global network of GPS tracking stations. In addition, details are presented about the replacement of global, arc-dependent and epoch-dependent deterministic parameters by stochastic processes. Current accuracies for the GPS orbits and clocks achieved with Auto-BAHN are illustrated through comparisons with IGS final solutions. (C) 2007 COSPAR. Published by Elsevier Ltd. All rights reserved.

引用

页码：1531 / 1538

页数：8

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