2013 UNAVCO Community & Facility Bridge Proposal: Geodesy Revealing the Earth in Action

1255679MillerNSF和UNAVCO，Inc.之间的这项合作协议(CA)支持继续管理和运营国家地球科学全球定位系统(GPS)和大地测量技术支持设施(UNAVCO设施)。所支助的活动包括为全球定位系统和大地测量技术实地项目提供规划和工程支助、积极管理持续运作的全球定位系统网络、宣传全球定位系统项目和地面激光扫描项目、技术开发和测试、数据服务以及教育和社区参与活动。所有这些活动都是UNAVCO代表地球范围板块边界观测站(PBO)管理的活动之外的活动，目前通过EAR/EarthScope方案管理的合作协议单独提供资金。对这个CA的支持包括NSF地球科学和极地计划部门的资金以及美国国家航空航天局(NASA)的支持。UNAVCO，Inc.是一家非营利性公司，由UNAVCO成员选举产生的董事会管理，主要由在大地测量方面拥有活跃研究计划的美国学术机构组成。目前有100多个成员机构和近80个准(无表决权的成员)，包括外国大学、国际政府天文台、学院和机构。值得注意的是，自2007年提交上一份融资机制支助提案以来，财团成员增加了约53%。CA项下将支持的具体活动包括：1)维护最先进的全球定位系统池(目前设施池中有350个接收器)和便携式三脚架安装的地面激光扫描仪？(3)为国家科学基金会和美国航天局资助的全球定位系统和全球定位系统项目规划、后勤和实地工程支助(每年支持约60-70个非极区项目，每年支持30-40个极地项目，每年支持约30-40个全球定位系统项目)；(3)为国家科学基金会和美国航天局资助的全球定位系统和全球定位系统项目规划、后勤和实地工程支助提供专门人员(每年支持约60-70个非极区项目，每年支持30-40个极地项目，每年支持约30-40个全球定位系统项目)；4)维护和运行美国航天局全球全球定位系统网络的61个站，这是国际全球定位系统网络的一个子集，为国际地球自转和参考系统服务处提供国际地球参考框架解决方案所需的关键数据；5)开发和维护全球定位系统数据档案(现已接近39TB的存储空间，由于近100个全球定位系统站点的发展而迅速增长，这些站点现在以1赫兹或更高的频率记录观测数据)和基于网络的检索工具；6)维护和开发一个合成孔径雷达图像档案和分配系统，用于对100千米空间尺度上与构造、火山、地震和地下流体动力学有关的连续统一体形变场进行干涉研究(档案包含欧洲航天局ERS 1、ERS2、Envisat、加拿大Radarsat和德国TerraSAR X SAR卫星提供的数千个空间合成孔径雷达图像场景；约20 TB的持有量)；7)规划和协调各种大地测量社区活动(如科学讲习班、指导委员会会议)；8)开发、评价和测试新的商业全球定位系统和大地测量技术(如天线相位中心校准、半永久性全球定位系统和共用环境传感器站的新型电力和遥测解决方案、测试能够记录美国全球定位系统、欧洲伽利略和俄罗斯全球导航卫星系统载频的具有全球导航卫星系统能力的新型接收器)；9)利用精密大地测量技术，代表美国学术研究界确保一个具有代表性和响应性的治理进程；和10)向学生和公众提供关于精密大地测量研究应用、地球科学和联合国志愿人员组织的教育和宣传材料及网络工具。

1255679MillerThis Cooperative Agreement (CA) between NSF and UNAVCO, Inc. supports continued management and operation of the national Earth sciences Global Positioning System (GPS) and geodetic technology support facility (?the UNAVCO Facility?). Activities supported include planning and engineering support for GPS and geodetic technology field projects, active management of continuously operated GPS networks, campaign GPS project and terrestrial laser scanning (TLS) project support, technology development and testing, data services and education and community engagement activities. All these activities are external to activities UNAVCO manages on behalf of the EarthScope Plate Boundary Observatory (PBO) and which are currently and separately funded via a Cooperative Agreement managed by the EAR/EarthScope Program. Support for this CA includes NSF Division of Earth Sciences and Polar Programs funding as well as support from the National Aeronautics and Space Agency (NASA). UNAVCO, Inc. is a non-profit corporation governed by a Board of Directors elected by the UNAVCO membership comprised predominantly of U.S. academic institutions with active research programs in geodesy. There are currently over 100 member institutions and nearly 80 associate (non-voting members) which including foreign universities, international government observatories, academies, and agencies. It is noteworthy that the consortium membership has grown by some 53% since the time of submission of the last Facility support proposal in 2007. Specific activities to be supported under the CA include: 1) maintenance of a pool of state-of-the-art GPS (currently 350 receivers in the Facility pool) and portable tripod mounted ?terrestrial laser scanners? (TLS; currently 6) available to NSF-supported scientists;2) continuing support for maintenance, telemetry and ultimate archival of semi-permanent continuous GPS station observations with station locations spanning the globe (currently 2,200 cCPS stations provide data to the UNAVCO Facility archive, not counting the ca. 1,110 cGPS station that comprise PBO);3) provision of personnel dedicated to NSF and NASA funded GPS and TLS project planning, logistics and field engineering support (ca. 60-70 non-Polar region projects supported each year and 30-40 Polar projects per year and ca. 30-40 TLS projects supported each year with rapid growth in the latter);4) maintenance and operations of the 61 stations in the NASA Global GPS Network (GGN), a subset of the International GPS Network (IGS) that provides crucial data to the International Earth Rotation and Reference Systems Service (IERS) needed for International Terrestrial Reference Frame (ITRF) solutions;5) development and maintenance of a GPS data archive (now approaching 39 Tb of storage with rapid growth forced by the evolution of near 100 cGPS stations that now record observation at high rate , 1 Hz or greater, and web-based access tools;6) maintenance and development of an archive and distribution system for synthetic aperture radar (SAR) scenes used for interferometric (InSAR) study of the continuum deformation fields associated with tectonic, volcanic, seismic and subsurface fluid dynamics over spatial scales of 100s of kilometers (the archive contains thousands of scenes of spaceborne SAR imagery from the European Space Agency ERS 1, ERS2, EnviSAT, Canadian RadarSAT and German TerraSAR X SAR satellites; some 20 Tb of holdings);7) planning and coordination of various geodetic community activities (e.g., scientific workshops, steering committee meetings);8) development, evaluation and testing of new commercial GPS and geodetic technologies (e.g., antenna phase center calibrations, novel power and telemetry solutions for semi-permanent cGPS and co-located environmental sensor stations, testing of new GNSS capable receivers that are capable of recording new U.S. GPS, European Galileo and Russian GLONASS carrier frequencies);9) ensuring a representative and responsive governance process on behalf of the U.S. academic research community using precision geodetic techniques; and10) provision of education and outreach materials and web-based tools to students and the public about precision geodetic research applications, the Earth sciences, and UNAVCO.