| GPS中长基线观测值随机特性分析 |
| |
| 引用本文： | 李博峰, 沈云中, 楼立志. GPS中长基线观测值随机特性分析[J]. 武汉大学学报 ( 信息科学版), 2010, 35(2): 176-180. |
| |
| 作者姓名： | 李博峰 沈云中 楼立志 |
| |
| 作者单位： | 1同济大学测量与国土信息工程系,上海市四平路1239号200092;2现代工程测量国家测绘局重点实验室,上海市四平路1239号,200092 |
| |
| 基金项目： | 国家自然科学基金资助项目(40674003,40874016); 现代工程测量国家测绘局重点实验室开放研究基金资助项目(TJES0809) |
| |
| 摘 要： | 探讨了中长基线GPS观测值随机特性的评估方法,先采用历元间高次差分的高通滤波算法有效地消除低频系统误差,只保留高频噪声;然后建立评估中长基线观测值精度、交叉相关性和时间相关性的数学模型。实测数据计算分析了GPS观测值的精度与高度角的关系、不同类型观测值的交叉相关性以及各类观测值的时间相关性。
|
| 关 键 词： | GPS 随机模型 系统误差 高次差分 频谱分析 |
| 收稿时间： | 2009-12-15 |
| 修稿时间： | 2009-12-15 |
Analysis of the Stochastic Characteristics for Medium and Long Baseline GPS Measurements |
| |
| LI Bofeng, SHEN Yunzhong, LOU Lizhi. Analysis of the Stochastic Characteristics for Medium and Long Baseline GPS Measurements[J]. Geomatics and Information Science of Wuhan University, 2010, 35(2): 176-180. |
| |
| Authors: | LI Bofeng SHEN Yunzhong LOU Lizhi |
| |
| Affiliation: | 1Department of Surveying and Geo-informatics Engineering,Tongji University,1239 Siping Road,Shanghai 200092,China;2Key Laboratory of Advanced Surveying Engineering of SBSM,1239 Siping Road,Shanghai 200092,China |
| |
| Abstract: | We develop a new strategy for evaluating the GPS stochastic model in long baseline scenario.Firstly,we employ high frequency pass filtering of multiple differences in time domain to efficiently eliminate the systematic biases.Then,the mathematic models are proposed to assess the different aspects of GPS stochastic characteristics.Finally,the real GPS data is used to demonstrate the performance of the developed models.The findings can benefit the quality evaluation and integrity of CORS measurements and the ... |
| |
| Keywords: | GPS stochastic model systematic error multiple difference spectrum analysis |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《武汉大学学报(信息科学版)》浏览原始摘要信息 |
|
点击此处可从《武汉大学学报(信息科学版)》下载全文 |
