Getting a Grip on Multi-GNSS: The International GNSS Service MGEX Campaign
Getting a Grip on Multi-GNSS: The International GNSS Service MGEX Campaign
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发表时间：
2013-07
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通讯作者：
O. Montenbruck;C. Rizos;R. Weber;G. Weber;R. Neilan;U. Hugentobler
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作者：
O. Montenbruck;C. Rizos;R. Weber;G. Weber;R. Neilan;U. Hugentobler
在全球导航卫星系统国际服务组织（IGS）内，全球200多个机构多年来汇集了资源和永久性全球导航卫星系统台站数据，以生成精确的全球导航卫星系统产品，支持地球科学研究、多学科应用和教育。到目前为止，这种服务仅限于两个系统，即全球定位系统和全球轨道导航卫星系统。认识到全球导航卫星系统的快速发展，IGS建立了多个全球导航卫星系统实验（MGEX），以探索和促进新的导航信号和星座的使用。它将使人们能够尽早熟悉新的全球导航卫星系统，确定和克服相关挑战，并准备在IGS常规产品中使用新兴导航系统。MGEX包括建立一个新的传感器站网络，确定用户设备和空间部分的特征，开发新的概念和数据处理工具，以及为伽利略、QZSS和北斗生成早期数据产品。MGEX由IGS Multi-GNSS工作组（MGWG）协调，该工作组与其他IGS实体密切互动，如RINEX工作组、天线工作组、数据中心工作组和卫星结构委员会。本文首先描述了MGEX网络，该网络构成了整个MGEX项目的起点和最初的重点。在介绍系统特征鉴定活动之后，介绍了多重全球导航卫星系统数据产品的现状以及为在全球导航卫星系统内开展多重全球导航卫星系统相关工作制定新标准而正在作出的努力。
Within the International GNSS Service (IGS), more than 200 worldwide agencies have, for many years, pooled resources and permanent GNSS station data to generate precise GNSS products in support of Earth science research, multidisciplinary applications, and education. So far, this service has been restricted to two systems — namely, GPS and GLONASS. In recognition of the rapidly evolving GNSS landscape, the IGS has set up the Multi-GNSS Experiment (MGEX) to explore and promote the use of new navigation signals and constellations. It will enable an early familiarization with new GNSS, identify and overcome relevant challenges, and prepare use of emerging navigation systems in routine IGS products. MGEX comprises the build-up of a new network of sensor stations, the characterization of the user equipment and space segment, the development of new concepts and data processing tools, and the generation of early data products for Galileo, QZSS, and BeiDou. MGEX is coordinated by the IGS Multi-GNSS Working Group (MGWG), which interacts closely with other IGS entities, such as the RINEX WG, the Antenna WG, the Data Center WG, and the Infra-structure Committee. The article starts out with a description of the MGEX network that formed the starting point and initial focus of the overall MGEX project. Following a description of system characterization activities, the current status of multi-GNSS data products and ongoing efforts for the development of new standards for multi-GNSS-related work within the IGS are presented.