A multipath mitigation method for significant environmental changes in deformation monitoring

IF 2.8 3区地球科学 Q2 ASTRONOMY & ASTROPHYSICS

Advances in Space Research Pub Date : 2025-02-01 DOI:10.1016/j.asr.2024.11.051

Chaoqian Xu , Zihuai Guo , Yibin Yao , Mingxian Hu , Peifen Pan

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引用次数: 0

Abstract

Significant environmental changes around monitoring antennas, caused by activities like earthmoving, protective structure installation, and vegetation removal, are common in GNSS deformation monitoring. Traditional multipath mitigation models fail to effectively suppress these multipath effects. To address this, we propose an Abnormal multipath Detection and Re-Mitigating (ADRM) method based on grid precision checks. The analysis results indicated that the traditional Multipath Hemispherical Model (MHM) inadequately mitigated multipath errors after environmental changes. In contrast, ADRM provided accurate detection of abnormal multipath areas. In the tested grid strategies, employing denser grids has proven more effective in mitigating multipath errors. The strategy utilizing 1°×1° grids achieved a detection accuracy exceeding 90 %, with a misjudgment rate under 10 %. This strategy is therefore recommended. Further mitigation of multipath errors after environmental changes using ADRM has significantly enhanced positioning precision, with improvements of 76.47 %, 89.17 %, and 80.83 % in the east, north, and vertical directions, respectively.

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来源期刊

Advances in Space Research 地学天文-地球科学综合

CiteScore

5.20

自引率

11.50%

发文量

800

审稿时长

5.8 months

期刊介绍： The COSPAR publication Advances in Space Research (ASR) is an open journal covering all areas of space research including: space studies of the Earth''s surface, meteorology, climate, the Earth-Moon system, planets and small bodies of the solar system, upper atmospheres, ionospheres and magnetospheres of the Earth and planets including reference atmospheres, space plasmas in the solar system, astrophysics from space, materials sciences in space, fundamental physics in space, space debris, space weather, Earth observations of space phenomena, etc. NB: Please note that manuscripts related to life sciences as related to space are no more accepted for submission to Advances in Space Research. Such manuscripts should now be submitted to the new COSPAR Journal Life Sciences in Space Research (LSSR). All submissions are reviewed by two scientists in the field. COSPAR is an interdisciplinary scientific organization concerned with the progress of space research on an international scale. Operating under the rules of ICSU, COSPAR ignores political considerations and considers all questions solely from the scientific viewpoint.