Dutch Permanent GNSS Array (DPGA)

The Dutch Permanent GNSS Array (DPGA) consists of about 18 continuously operating GPS (and GLONASS) receivers in the Netherlands and a data and computing center. The main purpose of the network is to to provide GNSS data to the International GNSS Service (IGS), EUREF Permanent GNSS Network (EPN), EUMETNET GPS water vapour programme (E-GVAP), and other national and international projects, and to facilitate research and educational applications.<br>The local data center in Delft provides data for the first order GNSS infrastructure in the Netherlands. The station setup and data is conform international standards. The stations fulfill different purposes: some of them are active reference stations (AGRS.NL), of which several are co-located with tide gauges along the North Sea coast, others are Integrated Geodetic Reference Station (IGRS) equipped corner reflectors for InSAR. Several stations are part of international networks, such as the International GNSS Service (IGS), Euref Permanent GNSS Network (EPN), and others; the data for these stations is forwarded to regional and global data centers.<br>High-rate, hourly and daily RINEX data from the Dutch Permanent GPS Array are available through through the TU Delft DPGA website and via anonymous ftp. Station meta-data, station coordinates, and tracking performance data and charts are available through the website.<br>The Dutch Permanent GNSS array also hosts a NTRIP caster providing real-time data streams for the stations in RTCM-3 MSM7 format and as raw-data streams.荷兰永久GNSS阵列（Dutch Permanent GNSS Array，DPGA）由荷兰境内约18台持续运行的GPS（及GLONASS）接收机与一套数据与计算中心组成。该网络的核心目标是为国际GNSS服务（International GNSS Service，IGS）、EUREF永久GNSS网络（EUREF Permanent GNSS Network，EPN）、EUMETNET GPS水汽项目（EUMETNET GPS water vapour programme，E-GVAP）及其他国内外项目提供GNSS数据，并支撑相关研究与教育应用。 位于代尔夫特的本地数据中心可为荷兰的一级GNSS基础设施提供数据支撑。该类站点的搭建规范与数据格式均符合国际标准。各站点承担差异化职能：部分为主动参考站（AGRS.NL），其中若干站点与北海沿岸的潮位仪并址布设；其余站点为集成大地测量参考站（Integrated Geodetic Reference Station，IGRS），配备了用于合成孔径雷达干涉测量（Interferometric Synthetic Aperture Radar，InSAR）的角反射器。部分站点隶属于国际网络，如国际GNSS服务（IGS）、EUREF永久GNSS网络（EPN）等；此类站点的数据将被转发至区域及全球数据中心。 荷兰永久GPS阵列的高采样率、每小时及每日RINEX（Receiver Independent Exchange Format）数据，可通过代尔夫特理工大学（Technische Universiteit Delft，TU Delft）DPGA官网及匿名FTP获取。站点元数据、站点坐标、跟踪性能数据及相关图表均可通过该官网查询。 荷兰永久GNSS阵列还搭载了NTRIP广播节点（NTRIP caster），可提供RTCM-3 MSM7格式的站点实时数据流与原始数据流。