Timing System Design Considerations for a Mobile Astrolabe,

Abstract

The Danjon Astrolabe at the naval Observatory has been traditionally used to determine Universal Time and improve the systematic accuracy of star positions. During the past year, it has been used to determine latitudes and longitude at remotely scattered sites for geodetic purposes. Operating this instrument away from the Observatory necessitated a mobile support and timing system rugged enough to operate dependably in ever changing, and sometimes harsh, environmental conditions. This paper describes the performance of the astrolabe timing system, gives the basic engineering design considerations, and describes the equipment and instrumentation. (Author)

Document Details

Document Type
Technical Report
Publication Date
Apr 02, 1984
Accession Number
ADP004592

Entities

People

  • C. F. Lukac
  • P. J. Wheeler
  • R. E. Keating
  • R. T. Clarke

Organizations

  • United States Naval Observatory

Tags

DTIC Thesaurus Topics

  • Accuracy
  • Engineering
  • Grids
  • Instrumentation
  • Intervals
  • Latitude
  • Longitude
  • Machines
  • Measuring Instruments
  • Mechanical Equipment
  • Observatories
  • Positioning Devices (Machinery)
  • Production Engineering
  • Star Position
  • Time Intervals

Readers

  • Geodesy
  • Positioning, Navigation, and Timing (PNT) Technology.
  • Systems Analysis and Design