Ground station Weilheim



The Weilheim Ground Station Complex consists of several spacecraft tracking stations concentrated in an area of approx. 0.15 kmĀ². They provide support for space missions mainly in the S-band and Ku-band frequency ranges.

In compliance with the Consultative Committee for Space Data Systems (CCSDS), the Weilheim station complex is classified as both, a Deep Space Network (Category B), and a Non Deep Space Network (Near Earth Network, Category A).

The stations are operated independently from each other and are equipped with redundant hardware components. The station complex provides a commercial electrical power aggregate of 720 kW. All antennas and station facilities are monitored and controlled from a dedicated station control room. The operational support is managed and scheduled by the Control Center at Oberpfaffenhofen.

A detailed overview about the antennas is given below.

 

4,5m antenna

The 4.5-meter ground station antenna provides telecommunications with geostationary spacecrafts. The station operates as a receive-only (R/O) terminal. The station can receive, demodulate, and record user spacecraft data telemetered in the S-band (2200 - 2300 MHz). The antenna used for data reception consists of a prime focus system with an elevation over azimuth mount. It is capable of program controlled operation, with manual capability as backup.

9m antenna

The 9-meter ground station antenna provides telecommunications with geostationary and orbiting spacecrafts. The station can receive, demodulate, and record user spacecraft data telemetered in the S-band (2200 - 2300 MHz). Command transmission is possible in the 2025 - 2110 MHz S-Band. The antenna consists of a prime focus system with an elevation over azimuth mount. It is capable of program controlled operation, with autotrack and manual capability as backup.

11m antenna

The ground station usees an 11.1m diameter main reflector antenna for telecommunications with near earth/LEOP missions and geostationary spacecrafts in the Ku-band frequency range. The ground station can receive, demodulate, process and record spacecraft data telemetered in the Ku-band (10.70 - 12.75 GHz). The antenna used for telemetry reception is a shaped Cassegrain system with an elevation over azimuth mount. The system is capable of monopuls autotrack operation, with computer control and manual capability as backup. The station can transmit command signals to spacecrafts in the Ku-band frequency range (13.75 - 14.50 GHz). The commands are generated at the GSOC Control Center and routed to the station via data lines.
The station is equipped with a high-precision Tracking System, which can provide range and angle data. The station has been constructed to support the Positioning and LEOP of spacecrafts operating in the Ku-band frequency range.

15m antennas

Two ground stations use 15-meter diameter main reflector antennas for telecommunications with near earth missions and geostationary spacecrafts in the S-band frequency range. The two stations are identical in function, however there are minor differences in the technical hardware design. The antennas are shaped Cassegrain systems with an elevation over azimuth mount. Each system is capable of monopuls autotrack operation, with computer control and manual capability as backup. The ground stations can receive, demodulate, process and record spacecraft data telemetered in the S-band (2200 - 2300 MHz). The stations can transmit command signals to spacecrafts in the S-band frequency range (2025 - 2120 MHz). The commands are generated at the GSOC Control Center and routed to the station via data lines.
The two 15-meter ground stations can provide range, range rate (Doppler), and angle data. The stations have successfully demonstrated their capabilities in a number of Launch and Early Orbit (LEOP) activities, and in several scientific space missions.

30m antenna

The antenna is a shaped Cassegrain system with an elevation over azimuth mount. It was constructed for the  Helios-A/B satellite missions. Later on the antenna was used to support the scientific space missions Giotto, AMPTE and Equator-S as well as for various scientific experiments.

The antenna is able to transmit to and receive commands from the spacecraft in the S- and X-bands. In the C-Band the antenna is a receive only terminal. The antenna operates in the frequency range of the Deep Space S-Band (2290 - 2300 MHz), the S-Band for near earth spacecrafts (2000 - 2290 MHz), in the X-band (8400 - 8440 MHz) and in the C-band (5625 - 6125 MHz) to receive telemetry from the spacecraft. The transmission of commands can be done in the S-band (2110 - 2120 MHz) as well as in the X-band (7160 - 7180 MHz).

 


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Texte zu diesem Artikel
HELIOS (http://www.dlr.de/rb/en/desktopdefault.aspx/tabid-2814/4262_read-6340/usetemplate-print/)
AMPTE (http://www.dlr.de/rb/en/desktopdefault.aspx/tabid-2814/4262_read-6339/usetemplate-print/)
Equator-S (http://www.dlr.de/rb/en/desktopdefault.aspx/tabid-2814/4262_read-6335/usetemplate-print/)