Community Facility Support for GNSS Data Analysis with GAMIT/GLOBK

使用 GAMIT/GLOBK 进行 GNSS 数据分析的社区设施支持

• 批准号: 1843686
• 负责人: Thomas Herring
• 金额: $ 52.43万
• 依托单位: Massachusetts Institute of Technology
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2019
• 资助国家: 美国
• 起止时间: 2019-07-15 至 2024-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1843686&HistoricalAwards=false
• 关键词: Community; Facility; Support; GNSS; Data

This Division of Earth Sciences Instrumentation and Facilities Program award supports the continued development and maintenance of the Global Navigation Satellites System (GNSS At MIT) GAMIT/Global Kalman Filter (GLOBK) suite of programs, shell scripts, and documentation that continue to be used worldwide for the analysis of GNSS data for scientific studies of a wide range of problems in Earth sciences. Support provides expert assistance to users in understanding their own data sets and analysis issues, and to continue the development of the suite to accommodate new analysis models, new generations of satellites and updated product and data formats. GAMIT/GLOBK is the sole academic developed GNSS software suite and is open source and freely distributed. It provides an important independent check on solutions produced using alternative packages (NASA/JPLs GIPSY-OASIS, the commercial Bernese package) and provides a check on reproducibility of GNSS position solutions. The investigators will also plan and conduct periodic technical short courses on the theory and use of the packages, both within the US and internationally, supporting student training. GAMIT/GLOBK is used worldwide by scientists and students to determine GPS/GNSS antenna positions, atmospheric signal propagation delay, earth orientation parameters, and satellite orbital parameters from GNSS observables. GLOBK, when used in conjunction with other geodetic data such as satellite laser ranging (SLR) and very long baseline interferometry (VLBI) is used to generate derived GNSS products such as station velocities, co-seismic offsets and post seismic motions. The software packages have thousands of users who employ it for research on crustal deformation processes, including earthquakes, volcanic activity, atmospheric water vapor tomography, ionospheric dynamics, cryosphere dynamics and even to determine soil moisture and snow pack depth, the latter relying on GNSS signal/noise ratio observations that record the effects of microwave ground reflections proximal to the GNSS antenna.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

该地球科学仪器和设施计划奖支持继续开发和维护全球导航卫星系统（GNSS）的程序，shell脚本和文档套件，继续在全球范围内用于分析GNSS数据，用于地球科学中广泛问题的科学研究。 支助部门向用户提供专家协助，帮助他们了解自己的数据集和分析问题，并继续开发这套数据集，以适应新的分析模型、新一代卫星以及更新的产品和数据格式。GAMIT/GLOBK是唯一的学术开发的GNSS软件套件，是开源和免费分发的。 它对使用替代软件包（美国航天局/喷气推进实验室的GIPSY-OASIS，伯尔尼商业软件包）产生的解决方案提供了重要的独立检查，并对全球导航卫星系统定位解决方案的再现性进行了检查。 研究人员还将计划和开展定期的技术短期课程的理论和使用的包，无论是在美国和国际上，支持学生培训。GAMIT/GLOBK被全世界的科学家和学生用来确定GPS/GNSS天线位置、大气信号传播延迟、地球定向参数和来自GNSS观测数据的卫星轨道参数。 全球大地测量数据库在与卫星激光测距和甚长基线干涉测量等其他大地测量数据结合使用时，用于生成测站速度、同震偏移和震后运动等全球导航卫星系统衍生产品。 这些软件包有成千上万的用户，他们使用它来研究地壳变形过程，包括地震、火山活动、大气水蒸气层析成像、电离层动力学、冰冻圈动力学，甚至确定土壤湿度和积雪深度，后者依赖于GNSS信号/记录GNSS天线附近微波地面反射影响的噪声比观测。该奖项反映了NSF的法定使命，通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。