Instrumental errors of geodetic VLBI
نویسنده
چکیده
A model of VLBI observables includes eeects of geometry, environment of signal propagation and delays in the data acquisition system itself. Imperfection of the model of instrumental eeects can be a considerable source of errors in the estimates of the targeted parameters. Two eeects: spurious signals in phase calibration and instrumental polarization are considered in details. Methods of their detection, evaluation and calibration are outlined. Innuence of these eeects on the nal results is shown.
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