{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,13]],"date-time":"2026-04-13T17:38:58Z","timestamp":1776101938383,"version":"3.50.1"},"reference-count":33,"publisher":"MDPI AG","issue":"13","license":[{"start":{"date-parts":[[2024,6,28]],"date-time":"2024-06-28T00:00:00Z","timestamp":1719532800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Young Scientists Fund of the National Natural Science Foundation of China","award":["42304099"],"award-info":[{"award-number":["42304099"]}]},{"name":"Young Scientists Fund of the National Natural Science Foundation of China","award":["JYTZD2023071"],"award-info":[{"award-number":["JYTZD2023071"]}]},{"name":"Young Scientists Fund of the National Natural Science Foundation of China","award":["KF2023YB01-03"],"award-info":[{"award-number":["KF2023YB01-03"]}]},{"name":"Young Scientists Fund of the National Natural Science Foundation of China","award":["YESS20200308"],"award-info":[{"award-number":["YESS20200308"]}]},{"name":"Young Scientists Fund of the National Natural Science Foundation of China","award":["Z211100002121068"],"award-info":[{"award-number":["Z211100002121068"]}]},{"name":"Liaoning Provincial Department of Education Basic Research Project","award":["42304099"],"award-info":[{"award-number":["42304099"]}]},{"name":"Liaoning Provincial Department of Education Basic Research Project","award":["JYTZD2023071"],"award-info":[{"award-number":["JYTZD2023071"]}]},{"name":"Liaoning Provincial Department of Education Basic Research Project","award":["KF2023YB01-03"],"award-info":[{"award-number":["KF2023YB01-03"]}]},{"name":"Liaoning Provincial Department of Education Basic Research Project","award":["YESS20200308"],"award-info":[{"award-number":["YESS20200308"]}]},{"name":"Liaoning Provincial Department of Education Basic Research Project","award":["Z211100002121068"],"award-info":[{"award-number":["Z211100002121068"]}]},{"name":"Key Laboratory of Smart Earth","award":["42304099"],"award-info":[{"award-number":["42304099"]}]},{"name":"Key Laboratory of Smart Earth","award":["JYTZD2023071"],"award-info":[{"award-number":["JYTZD2023071"]}]},{"name":"Key Laboratory of Smart Earth","award":["KF2023YB01-03"],"award-info":[{"award-number":["KF2023YB01-03"]}]},{"name":"Key Laboratory of Smart Earth","award":["YESS20200308"],"award-info":[{"award-number":["YESS20200308"]}]},{"name":"Key Laboratory of Smart Earth","award":["Z211100002121068"],"award-info":[{"award-number":["Z211100002121068"]}]},{"name":"Young Elite Scientists Sponsorship Program by CAST","award":["42304099"],"award-info":[{"award-number":["42304099"]}]},{"name":"Young Elite Scientists Sponsorship Program by CAST","award":["JYTZD2023071"],"award-info":[{"award-number":["JYTZD2023071"]}]},{"name":"Young Elite Scientists Sponsorship Program by CAST","award":["KF2023YB01-03"],"award-info":[{"award-number":["KF2023YB01-03"]}]},{"name":"Young Elite Scientists Sponsorship Program by CAST","award":["YESS20200308"],"award-info":[{"award-number":["YESS20200308"]}]},{"name":"Young Elite Scientists Sponsorship Program by CAST","award":["Z211100002121068"],"award-info":[{"award-number":["Z211100002121068"]}]},{"name":"Beijing Nova Program","award":["42304099"],"award-info":[{"award-number":["42304099"]}]},{"name":"Beijing Nova Program","award":["JYTZD2023071"],"award-info":[{"award-number":["JYTZD2023071"]}]},{"name":"Beijing Nova Program","award":["KF2023YB01-03"],"award-info":[{"award-number":["KF2023YB01-03"]}]},{"name":"Beijing Nova Program","award":["YESS20200308"],"award-info":[{"award-number":["YESS20200308"]}]},{"name":"Beijing Nova Program","award":["Z211100002121068"],"award-info":[{"award-number":["Z211100002121068"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>The high-precision satellite velocities and accelerations calculated by the Global Navigation Satellite System (GNSS) are essential for tasks such as airborne gravity data processing. Users generally interpolate satellite positions in the precise ephemeris to calculate satellite velocity and acceleration. However, due to the edge effect, the accuracy of the interpolation is relatively low near day boundaries. In this study, a method for calculating GNSS satellite velocity and acceleration based on orbit fitting and orbit integration was proposed, and the high-precision transformation relationship between satellite velocity and acceleration in the Earth-Centered Inertial (ECI) coordinate system and the Earth-Centered, Earth-Fixed (ECEF) coordinate system was derived. The experimental results show that the satellite velocity accuracy is 1.5 \u00d7 10\u22126 m\/s and the acceleration accuracy is 1.0 \u00d7 10\u22128 m\/s2 according to the proposed method. Thus, the proposed method improves the accuracy of calculating satellite velocity and acceleration near day boundaries, and helps GNSS users to obtain satellite velocity and acceleration information with consistent precision throughout the day.<\/jats:p>","DOI":"10.3390\/rs16132366","type":"journal-article","created":{"date-parts":[[2024,6,28]],"date-time":"2024-06-28T06:51:53Z","timestamp":1719557513000},"page":"2366","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Calculating Global Navigation Satellite System Satellite Velocities and Accelerations by Utilizing the Orbit Fitting and Orbit Integration Methods"],"prefix":"10.3390","volume":"16","author":[{"given":"Chuanfeng","family":"Song","sequence":"first","affiliation":[{"name":"School of Geomatics, Liaoning Technical University, Fuxin 123000, China"}]},{"given":"Shilong","family":"Geng","sequence":"additional","affiliation":[{"name":"School of Geomatics, Liaoning Technical University, Fuxin 123000, China"}]},{"given":"Liang","family":"Chen","sequence":"additional","affiliation":[{"name":"School of Geomatics, Liaoning Technical University, Fuxin 123000, China"}]},{"given":"Xiangdong","family":"An","sequence":"additional","affiliation":[{"name":"School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3772-1966","authenticated-orcid":false,"given":"Hongyang","family":"Ma","sequence":"additional","affiliation":[{"name":"School of Geomatics Science and Technology, Nanjing Tech University, Nanjing 210037, China"}]}],"member":"1968","published-online":{"date-parts":[[2024,6,28]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"345","DOI":"10.1007\/s00190-016-0968-8","article-title":"CODE\u2019s five-system orbit and clock solution\u2014The challenges of multi-GNSS data analysis","volume":"91","author":"Prang","year":"2016","journal-title":"J. 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