利用卫星重力测量确定地球重力场模型的进展  被引量:12

Progress in Determining the Earth’s Gravity Field Model by Satellite Gravimetry

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作  者:罗志才 钟波[2] 周浩[1] 吴云龙 LUO Zhicai;ZHONG Bo;ZHOU Hao;WU Yunlong(School of Physics,Huazhong University of Science and Technology,Wuhan 430074,China;School of Geodesy and Geomatics,Wuhan University,Wuhan 430079,China;School of Geography and Information Engineering,China University of Geosciences,Wuhan 430074,China)

机构地区:[1]华中科技大学物理学院,湖北武汉430074 [2]武汉大学测绘学院,湖北武汉430079 [3]中国地质大学地理与信息工程学院,湖北武汉430074

出  处:《武汉大学学报(信息科学版)》2022年第10期1713-1727,共15页Geomatics and Information Science of Wuhan University

基  金:国家自然科学基金(41931074,41974015,42061134007)。

摘  要:卫星重力测量是当前探测全球一致、高精度和高分辨率地球重力场的高效技术手段,主要包括高低卫星跟踪卫星测量(satellite-to-satellite tracking in high-low mode, SST-hl)、低低卫星跟踪卫星测量(satelliteto-satellite tracking in low-low mode, SST-ll)和卫星重力梯度测量(satellite gravity gradiometry,SGG)。系统总结了利用卫星重力测量技术(包括SST-hl、SST-ll和SGG及多模式组合)反演地球重力场的主要方法,评述了利用挑战性小卫星有效载荷(challenging mini-satellite payload, CHAMP)、重力恢复与气候实验(gravity recovery and climate experiment, GRACE)/GRACE继任者(GRACE follow-on, GRACE-FO)和地球重力场和海洋环流探索器(gravity field and steady-state ocean circulation explorer, GOCE)卫星重力数据构建静态和时变重力场模型的最新进展,并对当前具有代表性的地球重力场模型精度进行了分析和评估,以期对未来的地球重力场研究及其地学应用提供参考。Satellite gravimetry is an efficient technical means to detect the global consistent, high-precision and high-resolution Earth’s gravity field,mainly including high-low satellite-to-satellite tracking(SST-hl),low-low satellite-to-satellite tracking(SST-ll) and satellite gravity gradiometry(SGG). We summarize the main methods to recover the earth’s gravity field from satellite gravimetry technologies(including SST-hl,SST-ll, SGG and multi-mode combination), and review the latest progress in constructing the static and time-variable gravity field models using challenging mini-satellite payload(CHAMP),gravity recovery and climate experiment(GRACE)/GRACE follow-on(GRACE-FO) and gravity field and steady-state ocean circulation explorer(GOCE) satellite gravity measurements. And the accuracies of the current representative static and time-variable gravity field models are analyzed and evaluated. It is expected to provide reference for the study of the Earth’s gravity field and its geoscience application in the future.

关 键 词:地球重力场 卫星重力测量 多模式观测数据融合 模型精度评估 

分 类 号:P223.4[天文地球—大地测量学与测量工程]

 

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