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Transformation procedures in 3D conventional co-ordinate systems

Sedlak V.

Reports on Geodesy

2001

z. 4/59

57-68

Real time determination of the Poincare-Prey`s anomaly horizontal gradient

Pachuta A.

Reports on Geodesy

2000

z. 2/50

71-75

The paper contains a report from studies concerning gravity and position data determination for reductions in the Earth`s gravity field of geodetic and astronomical observations using the horizontal gradient of Poincare-Prey`s anomalies directly in terrain in real time. The author`s indications for establishment of the algorithm of the program GRAWPREY for microcomputer Psion Organiser are given.

Preliminary results of astrometric observations in Józefosław

Kruczyk M., Rogowski J., Vondrak J.

Reports on Geodesy

1999

z. 4/45

161-166

Horrebrow-Talcott method observations of latitude changes have been performed in WUT Astrogeodetic Observatory in Józefosław since 1959. Results were recalculated using positions and proper motions from HIPPARCOS Catalogue and present IAU standards because of errors in declination corrections and Iow accuracy of proper motions from old catalogues. Quality of data has been distinctly improved. The value of micrometer screw revolution was also corrected. Now there are no magnification of annual term with time. We calculate subsequently mean latitude, theoretical (so called "calculatio") latitude, 0-C term and main periodic terms in both). We gain mean latitude, secular trend, annual and semi-annual change of 0-C term and precision assessment. Residuals were object of spectral analysis in search for long term and seasonal part. This paper presents preliminary results of such computations.