摘要
在对比分析单元谐波估计与多元谐波估计这2种最小二乘谐波估计方法的数学原理及实现方法基础上,基于实际监测点的GNSS坐标时间序列,通过实验对比2种方法在提取多路径效应方面的效果。结果表明,单元谐波估计和多元谐波估计均能较好地提取多路径效应;在未发生数据中断的情况下,相比于单元谐波估计,多元谐波估计的去噪效果更明显,E、N、U三方向的剔除率分别有2.67%、2.50%、4.48%的改善;但在数据中断严重的情况下,单元谐波估计的去噪效果更好,相比于多元谐波估计,单元谐波估计在E、N、U三方向的剔除率分别有2.42%、4.65%、0.05%的提高。
This paper firstly compares and analyzes the difference between the unit harmonic estimation and the multi-harmonic estimation in extracting multipath effects,introduce the mathematical principles and implementation methods of the two methods,then compare the effects of the two methods through a field experiment.The experimental results show that both unit-harmonic estimation and multi-harmonic estimation can significantly extract the multipath effect.In the case of no data interruption,the denoising effect of multi-harmonic estimation is more obvious.The rejection rate of E/N/U directions is improved by 2.67%/2.50%/4.48%respectively,but in the case of severe data interruption,the denoising effect of the unit harmonic estimation is better.The rejection rate of the unit harmonic estimation in the E/N/U direction is improved by 2.42%/4.65%/0.05%respectively.
作者
曹婷婷
李志峰
苟浩洋
CAO Tingting;LI Zhifeng;GOU Haoyang(College of Surveying and Geo-Informatics,Tongji University,1239 Siping Road,Shanghai 200092,China;Shandong Transportation Planning and Design Institute Co Ltd,576 West-Wuyingshan Road,Ji’nan 250000,China)
出处
《大地测量与地球动力学》
CSCD
北大核心
2022年第2期139-142,共4页
Journal of Geodesy and Geodynamics
基金
上海市教育发展基金会和上海市教育委员会“曙光计划”(20SG18)
上海市优秀学术带头人项目(20XD1423800)。
