GNSS时间序列分析与降噪软件的实现  

GNSS time series analysis and noise reduction software

作　　者：熊常亮 贺小星[3] 孙喜文 马下平[5] XIONG Changliang;HE Xiaoxing;SUN Xiwen;MA Xiaping(CAS Innovation Academy for Precision Measurement Science and Technology,Wuhan 430077,China;University of the Chinese Academy of Science,Beijing 100049,China;School of Civil Engineer and Architecture,East China Jiaotong University,Nanchang 330013,China;Shaanxi Railway Institute,Weinan,Shaanxi 714000,China;College of Geomatics,Xi’an University of Science and Technology,Xi’an 710054,China)

机构地区：[1]中国科学院精密测量科学与技术创新研究院,武汉430077 [2]中国科学院大学,北京100049 [3]华东交通大学土木建筑学院,南昌330013 [4]陕西铁路工程职业技术学院,陕西渭南714000 [5]西安科技大学测绘科学与技术学院,西安710054

出　　处：《导航定位学报》2021年第5期152-162,共11页Journal of Navigation and Positioning

基　　金：国家自然科学基金青年项目(42104023);国家自然科学基金项目(42061077,41904171,41804007);江西省自然科学基金项目(20202BAB214029,20202BABL214055);江西省数字国土重点实验室开放基金项目(DLLJ201909);江西省教育厅科学技术研究项目(GJJ200639,GJJ171293)。

摘　　要：针对全球卫星导航系统(GNSS)时间序列精密数据处理分析、降噪等过程繁琐且算法复杂的问题,基于矩阵实验室(MATLAB)图形用户界面,设计了一款GNSS时间序列分析与降噪的数据处理软件。该软件实现了三种改进的经验模态分解(EMD)降噪算法,可有效剔除GNSS时间序列中的噪声;其次,软件中实现了多种共模误差分离算法,可为不同尺度的GNSS观测网进行共模误差分析。结果表明:软件功能完善、界面友好、可靠性高,且改进的方法有效提高了降噪精度,为GNSS时间序列数据处理分析提供参考。For Global Navigation Satellite System(GNSS)time series precision data processing and analysis,noise reduction and other processes are cumbersome and involve many complex algorithms.This paper designs a data processing software for GNSS time series analysis and noise reduction based on MATrix LABoratory(MATLAB)graphical user interface.The software implements three improved Empirical Mode Decomposition(EMD)noise reduction algorithms,which can effectively eliminate noise in GNSS time series.Secondly,a variety of common mode error separation algorithms are implemented in the software,which can perform common mode error analysis for GNSS observation networks of different scales.The data experiment results show that the software has complete functions,friendly interface,and high reliability,and the improved method effectively improves the accuracy of noise reduction,and provides a powerful solution software for GNSS time series data processing and analysis.

关 键 词：全球卫星导航系统 软件设计 时间序列 数据处理 

分 类 号：P228[天文地球—大地测量学与测量工程]