Recent GPS Results at SLAC

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The Alignment Engineering Group (AEG) makes use of GPS technology for fulfilling part of its above ground surveying tasks at SLAC since early 2002. A base station (SLAC M40) has been set up at a central location of the SLAC campus serving both as master station for real-time kinematic (RTK) operations and as datum point for local GPS campaigns. The Leica RS500 system is running continuously and the GPS data are collected both externally (logging PC) and internally (receiver flashcard). The external logging is facilitated by a serial to Ethernet converter and an Ethernet connection at the station. Internal logging ... continued below

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2 pages

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Behrend, Dirk; Imfeld, Hans L. & /SLAC August 17, 2005.

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Description

The Alignment Engineering Group (AEG) makes use of GPS technology for fulfilling part of its above ground surveying tasks at SLAC since early 2002. A base station (SLAC M40) has been set up at a central location of the SLAC campus serving both as master station for real-time kinematic (RTK) operations and as datum point for local GPS campaigns. The Leica RS500 system is running continuously and the GPS data are collected both externally (logging PC) and internally (receiver flashcard). The external logging is facilitated by a serial to Ethernet converter and an Ethernet connection at the station. Internal logging (ring buffer) is done for data security purposes. The weatherproof boxes for the instrumentation are excellent shelters against rain and wind, but do heat up considerably in sun light. Whereas the GPS receiver showed no problems, the Pacific Crest PDL 35 radio shut down several times due to overheating disrupting the RTK operations. In order to prevent heat-induced shutdowns, a protection against direct sun exposure (shading) and a constant air circulation system (ventilation) were installed. As no further shutdowns have occurred so far, it appears that the two measures successfully mended the heat problem.

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2 pages

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  • Presented at 8th International Workshop on Accelerator Alignment (IWAA 2004), Geneva, Switzerland, 4-7 Oct 2004

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  • Report No.: SLAC-WP-055
  • Grant Number: AC02-76SF00515
  • Office of Scientific & Technical Information Report Number: 878756
  • Archival Resource Key: ark:/67531/metadc873829

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  • August 17, 2005

Added to The UNT Digital Library

  • Sept. 21, 2016, 2:29 a.m.

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  • Dec. 9, 2016, 10:22 p.m.

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Behrend, Dirk; Imfeld, Hans L. & /SLAC. Recent GPS Results at SLAC, article, August 17, 2005; [Menlo Park, California]. (digital.library.unt.edu/ark:/67531/metadc873829/: accessed August 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.