GEOSAT Follow-On (GFO): Operational Orbit Determination Data for 1998-2008 (NODC Accession 0085961)

The GEOSAT Follow-On (GFO) program is the Navy's initiative to develop an operational series of radar altimeter satellites to maintain continuous ocean observation from the GEOSAT Exact Repeat Orbit. GFO was launched in February 1998. On 29 November 2000 the Navy accepted the satellite as operational. GFO officially ended on October 22, 2008. NOAA worked together with the Naval Oceanographic Office to process the altimeter data and provides Geophysical Data Record (GDR) to the scientific research community (all data are unclassified). This accession contains a copy of GFO Operational Orbit Determination Data (OODD), which was generated by the United States Naval Satellite Operations Center (NAVSOC).

大地卫星后续计划（GEOSAT Follow-On, GFO）是美国海军主导的项目，旨在研发雷达高度计卫星业务化系列，以维持GEOSAT精确重复轨道下的持续海洋观测任务。GFO卫星于1998年2月发射升空，2000年11月29日正式通过美国海军验收并投入业务运行，最终于2008年10月22日正式退役。美国国家海洋和大气管理局（National Oceanic and Atmospheric Administration, NOAA）与海军海洋局合作处理该高度计数据，并向科研界提供地球物理数据记录（Geophysical Data Record, GDR）——所有数据均为非保密级资料。本数据集收录了由美国海军卫星作战中心（United States Naval Satellite Operations Center, NAVSOC）生成的GFO业务轨道确定数据（Operational Orbit Determination Data, OODD）副本。