基于多参数模型的实时精密单点定位理论与方法研究

项目名称： 基于多参数模型的实时精密单点定位理论与方法研究

项目编号： No.41204034

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 地球物理学和空间物理学

项目作者： 李浩军

作者单位： 中国科学院上海天文台

项目金额： 25万元

中文摘要： 为了简化精密单点定位的服务内容，增强单站观测的自主能力，本项目提出了采用三频观测数据的多参数实时精密单点定位理论。主要研究三频观测信号的实时预处理方法，提高系统的预处理能力；研究三频信号频间差异快速估计，及高精度预报、模型化的相关算法。通过对三频信号频间差异的精密计算与归化，使不同观测组合对应的卫星钟差补偿具有一致性；基于各观测组合对应卫星钟差的一致性，构建多参数实时精密单点定位模型；分析影响多参数模型参数收敛时间的因素，研究参数快速收敛的有效解决方案，实现高精度定位。通过相关理论与方法系统、全面地研究，实现多参数实时精密单点定位。多参数实时精密单点定位的实现，无疑会给导航定位技术及相关产业带来重要性的变化。

中文关键词： 实时精密单点定位；多参数；多频信号；；

英文摘要： To reduce the service item and improve the independent ability of single receiver, a new strategy to realize the real-time precise point positioning in triple-frequency observations is presented, and the theory of multi-parameter model based real-time precise point positioning is constructed in this project. The capability of real-time data pre-processing is improved through studying of the pre-processing method of triple-frequency observations. The algorithms of fast estimation, precise prediction and model of the inter-frequency bias are studied. In order to enable a consistent use of the satellite clock of different observation combinations, the algorithms are used to compute and correct inter-frequency bias. Based on the consistency, the multi-parameter model of real-time precise point positioning is studied and built. The key issues of parametric convergence time are studied to present the strategy to fix the un-differenced ambiguity and realize the fast and precise positioning of multi-parameter model based real-time precise point positioning. The multi-parameter model based real-time precise point positioning can be implemented through studying of the above theories and algorithms. The positioning tchnology and related businesses will be changed by the performances of the multi-parameter model based real-

英文关键词： Real-time precise point positioning；Multi-parameter；Multi-frequency；；