GPS標準測位サービス(SPS)の性能分析 2016

テキサス大学オースティン校 応用研究所 宇宙地球物理研究室
[ Link to gps.gov ]

　2017年5月付で発表されたGPS標準測位サービスの性能評価報告書である。概要は次のとおり：
　Applied Research Laboratories, The University of Texas at Austin (ARL:UT) examined the performance of the GPS throughout 2016 for the GPS Directorate (SMC/GP). This report details the results of that performance analysis.
　Performance is defined by the 2008 Standard Positioning Service (SPS) Performance Standard (PS). The Performance Standards provide the U.S. government’s assertions regarding the expected performance of GPS. This report does not address each of the assertions in the performance standards. This report emphasizes those assertions which can be veried by anyone with knowledge of standard GPS data analysis practices, familiarity with the relevant signal specication, and access to a GNSS data archive.
　The assertions evaluated include those of accuracy, integrity, continuity, and availability of the GPS signal in space (SIS) and the position performance standards. Chapter 2 of the report includes a tabular summary of the assertions that were evaluated　and a summary of the results. The remaining chapters present details on the analysis associated with each assertion.
　All the SPS PS metrics examined in the report were met in 2016 with one exception. The exception was the report notication