This chapter presents examples of antennas and telescopes, shortly describes the antenna control system, and presents references on the antenna mechanical and control engineering.

Examples of Antennas and Telescopes

NASA Deep Space Network

The NASA Deep Space Network (DSN) antennas communicate with spacecraft by sending commands (uplink) and by receiving information from spacecraft (downlink). To assure continuous tracking during Earth’s rotation, the antennas are located at three sites: Goldstone (California), Madrid (Spain), and Canberra (Australia). The signal frequencies are 8.5 GHz (X-band) and 32 GHz (Ka-band). The dish size of the antennas is either 34 m or 70 m. An example of the 70-m antenna is shown in Fig. 1.1. The antenna dish rotates with respect to the horizontal (or elevation) axis. The whole antenna structure rotates on a circular track (azimuth track) with respect to the vertical (or azimuth) axis. For the Ka-band frequency the required tracking accuracy is on the...


Adaptive Optic System Deep Space Network Position Loop Velocity Loop Thirty Meter Telescope 
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Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  • Wodek Gawronski
    • 1
  1. 1.Jet Populsion LaboratoryCalifornia Institute of TechnologyPasedenaUSA

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