Doppler integration intervals and correlation

Statistics – Applications

Scientific paper

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Doppler Effect, Measure And Integration, Time Constant, Time Optimal Control, Independent Variables, Matrix Methods, Tables (Data)

Scientific paper

Numerical tests have been carried out to determine the effect of changing the adopted integration time intervals used in the reduction of satellite Doppler data and to establish the contribution of geometrical correlation between adjacent Doppler counts. This has been done by using observational data obtained from a recent United Kingdom Doppler campaign involving 13 primary triangulation stations. Nine different integration intervals were used, ranging from the smallest possible 4.6 s Doppler count to the largest practical interval of 2 min. The tests were carried out for both uncorrelated and correlated Doppler counts. The correlation model used was the standard geometrical correlation pattern for adjacent Doppler counts and range differences. The results of the analysis seem largely to confirm the current mode of practice of using uncorrelated Doppler counts corresponding to time intervals ranging from 20 to 40 s.

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