Measuring precision of time-variation of plumb-line deflection by repeated gravimetry

Details Measuring precision of time-variation of plumb-line deflection by repeated gravimetry Measuring precision of time-variation of plumb-line deflection by repeated gravimetry

Oct 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005acasn..46..460l&link_type=abstract

Acta Astronomica Sinica, vol. 46, no. 4, p. 460-473

Statistics

Computation

Gravimetry, Time-Variation Of Plumb-Line Deflection, Time-Variation Of Gravity Potential

Scientific paper

Two differential formulas for evaluating time-variation of plumb-line deflection are given, and precision of measuring time-variation of plumb-line deflection by repeated gravimetry is studied in theory. At present, the accuracy of time-variation of plumb-line deflection can be attained to 0.005'' and the influence in far area can be ignorable. By analog computation of gravimetric network, the conclusions above are verified. On the basis that the effective area of the gravimetric network is limited, effective integral radius, resolution, adverse region and so on are discussed; local factor effecting the change of precision is analyzed roughly.

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