The GPS receivers are installed at the ESA Kourou Diane station that is located about 27 km from the town of Kourou, in French Guyana.
The first receiver was a Minirogue SNR-8C. It was installed in July 1992. Initially the data were downloaded directly from the receiver to ESOC using Telebit modems. After experiencing problems with the quality of the telephone line, a new solution was implemented an the system become operational on 18 October 1992. It is based on the permanent links between the station and the control centre ESOC shared by other ESA projects. The receiver was upgraded on October 1997 to a TurboRogue SNR-8100.
The software of the MiniRogue was upgraded to version 7.8 on 6 October 1994. The receiver has operated permanently without hardware problems until replaced with the TurboRogue.
In march 200 the receiver was replaced by an Ashtech Z-XII.
A parallel system (kou1), completely independent, was installed in January 2002. The receiver is a combined GPS+GLONASS Topcon Legacy. The antenna is located a few meters away from the one of the Ashtech receiver. Both receivers are connected to the same frequency standard from the station timing system.
The Cesium timing system of the station provides a stable external frequency source.
Each receiver is operated from a computer located in the ESA WAN. Remote operation from the control centre located at ESOC, Germany is feasible. The data of the Ashtech are downloaded hourly and the combined Topcon GPS+GLONASS receiver are downloaded daily according to the requirements of the IGS and IGEX communities.
A permanent concrete monument was constructed for the Dorne Margolin B antenna. The GPS reference point is at the centre of the upper surface of an horizontal metal plate embedded on the concrete monument. It is located about 25 m from the MCR building.
A similar monument was built for the GPS+GLONASS receiver.
The Station Information Form (SIF) summarises the characteristics and development of the GPS site. The last version and more information are available from the IGS Central Bureau for kour (Ashtech) and kou1 (Topcon)
And some photos of the kour site:
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Contact info. Last Update: July 2002