Computer Science
Scientific paper
Jul 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988osu..rept.....m&link_type=abstract
Semiannual Status Report Ohio State Univ., Columbus. Dept. of Geodetic Science and Surveying.
Computer Science
Accuracy, Earth Rotation, Geodetic Surveys, Satellite-Borne Instruments, Data Transmission, Lageos (Satellite), Laser Range Finders, Lunar Rangefinding, Run Time (Computers), Very Long Base Interferometry
Scientific paper
Additional results are presented concerning a study that considers improvements over present Earth Rotation Parameter (ERP) determination methods by directly combining observations from various space geodetic systems in one adjustment. Earlier results are extended, showing that in addition to slight improvements in accuracy, substantial (a factor of three or more) improvements in precision and significant reductions in correlations between various parameters can be obtained (by combining Lunar Laser Ranging - LLR, Satellite Laser Ranging - SLR to Lageos, and Very Long Baseline Interferometry - VLBI data in one adjustment) as compared to results from individual systems. Smaller improvements are also seen over the weighted means of the individual system results. Although data transmission would not be significantly reduced, negligible additional computer time would be required if (standardized) normal equations were available from individual solutions. Suggestions for future work and implications for the New Earth Rotation Service (IERS) are also presented.
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