Longitude Determination by Two Different Stars Observed at the Same Altitude East and West of the Meridian

Abstract

The determination of time by east and west observation of the zenith distance of a star near the prime vertical shows discrepancies as much as 2 seconds of time. A new method with higher accuracy has been developed. It is based on observation of an individual pair of stars. The observation of each star (one east, the other west of the meridian) consists of determining the instant of time at which it crosses a fixed preselected unknown zenith in order to determine the circumstances when greatest accuracy can be expected. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Mar 14, 1981
Accession Number
ADA109329

Entities

People

  • Angel A. Baldini

Organizations

  • Geospatial Research Laboratory

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Accuracy
  • Altitude
  • Continents
  • Equations
  • Errors
  • Geographic Regions
  • Grids
  • Latitude
  • Longitude
  • Micrometers
  • Military Research
  • Observation
  • Observatories
  • Observers
  • Sensitivity
  • Theodolites

Readers

  • Geodesy
  • Space/Atmospheric Physics.