The actual accuracy of latitude observations

Details The actual accuracy of latitude observations The actual accuracy of latitude observations

Dec 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979acasn..20..344z&link_type=abstract

Acta Astronomica Sinica, vol. 20, Dec. 1979, p. 344-348. In Chinese, with abstract in English.

Physics

Geophysics

Astrometry, Error Analysis, Instrument Errors, Latitude Measurement, Accuracy, Astronomical Coordinates, Geophysics, Periodic Variations, Tectonics

Scientific paper

The properties of the local non-polar terms in latitude observations have been studied. On the basis of analyzing the differences between instantaneously obtained latitude data of two different instruments at one station, it was demonstrated that the actual accuracy of latitude observations is much less than the internal accuracy of an instrument. It was concluded that the main part of the non-polar term is composed of the error-factors, such as irregular refraction in observing room, while the geophysical factors such as tectonic movement and change of plumb line are of little importance.

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