摘要
主要介绍从GPS原始数据中提取伪距噪声的方法,并利用MATLAB非线性拟合工具箱cftool中的参数逼近模型对提取出的伪距噪声建模,针对几种较好的建模结果进行数据回放和比较,确定最佳建模方案.建模结果可用于Galileo系统空间信号误差(signal-in-space error)的实时估计和用户完好性算法的研究.
A method is proposed to extract pseudo-range noise from GPS raw data in this paper.And then the obtained pseudo-range noise is modeled by using several parameter approximation models in the MATLAB non-linear curve fitting toolbox（cftool）.By data playback and compassion of several modeling results,the best modeling scheme is selected.The results presented in this paper can be used to develop real-time estimation and user integrity algorithms for signal-in space error in the Galileo system.
出处
《空间控制技术与应用》
2011年第2期44-48,共5页
Aerospace Control and Application
基金
国家高科技研究863计划(2008AA12Z303)资助项目
关键词
GPS
伪距噪声建模
拟合
GPS
pseudo-range noise modeling
curve fitting
