SUMMARY
The global positioning system (GPS) and the deformation monitoring system accuracies for different observation periods were evaluated and the results showed that the deformation monitoring system performance is comparable to the GPS, especially for longer observation period solutions, with daily solution accuracies of 1 mm horizontally and 2 mm vertically. The algorithmically corrected real-time acquisition of the ground deformation monitoring system signals with the precision leveling measurements between the error was less than 1 mm. The measured and precisionleveled BDT1, BDT2, and BDT3 measurement point vertical displacement deviations of the platforms ranged from -1.5 mm . . .
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