全球定位系统2025，Vol.50Issue(5)：74-79,6.DOI:10.12265/j.gnss.2025057
顾及地形影响的GNSS-MR雪深反演研究
Research on GNSS-MR snow depth inversion incorporating terrain factors
王家宝 1项宇 1刘治君 1符星宇 1杨祚 1杨菂2
作者信息
- 1. 北京卫星导航中心,北京 100094
- 2. 西南交通大学地球科学与工程学院,成都 611756
- 折叠
摘要
Abstract
Snow cover monitoring is important because the accumulation and melting of snow cover is influenced by global weather and climate,as well as changes in weather and climate.GNSS Multipath Reflectometry(GNSS-MR)is an emerging method for snow depth detection,but its accuracy is lower than that of other methods due to the severe influence of the undulating terrain around the station.In order to weaken the influence of terrain undulation on the accuracy of the inversion results,this paper conducts a plane grid of the terrain around the station,and constrains the results of each grid to eliminate the reflected signal in the area with excessive undulation.In this paper,taking the P360 station of the Plate Boundary Observatory(PBO)network as an example,the snow depth value from the 50th day to the 100th day of 2015 is calculated and compared with the results obtained without this method.The experimental results show that the root mean square error(RMSE)calculated by this method is increased by 82.89%from 12.04 cm to 2.06 cm compared with the RMSE without this method,which proves that the method can better avoid the influence of terrain and improve the inversion accuracy.关键词
全球导航卫星系统多路径反射测量(GNSS-MR)/多路径效应/菲涅尔反射区/平面格网化/雪深探测Key words
GNSS-MR/multipath effect/fresnel reflection zone/plane gridding/snow depth detection分类
地球科学引用本文复制引用
王家宝,项宇,刘治君,符星宇,杨祚,杨菂..顾及地形影响的GNSS-MR雪深反演研究[J].全球定位系统,2025,50(5):74-79,6.
