caa a22 4500 606162631 CHVBK 20210128100640.0 cr unu---uuuuu 210128e20150401xx s 000 0 eng 10.1007/s10291-014-0378-4 doi (NATIONALLICENCE)springer-10.1007/s10291-014-0378-4 PLL bandwidth and noise in 100Hz GPS measurements [Elektronische Daten] [Fanis Moschas, Stathis Stiros] The impact of the phase-locked loop (PLL) bandwidth on the noise and correlations of GPS measurements sampled with a 100Hz rate has been investigated using short and long baselines, and stationary or moving GPS rovers recording oscillations with known characteristics relative to "true” reference values. Data have been collected under various satellite constellations using various values of PLL bandwidth, particularly 25, 50, 100Hz, and were processed in differential mode using different software packages. Analysis of standard deviations, spectra and autocorrelation functions of the differences between recorded and true displacements revealed that an increase in the PLL bandwidth leads to reduction in correlations and increase in low- and high-frequency noise of 100Hz data. Optimal results can be obtained using either a pre-set 50Hz PLL bandwidth or a 100Hz PLL bandwidth combined with a posteriori band-pass filtering of the coordinates. Such optimal results permit accurate recording of high-frequency (>5Hz), dynamic displacements of a few millimeters and indicate that 100Hz data are useful for monitoring high-frequency structural vibrations, and also strong earthquake motions and high-frequency movements of vehicles. Springer-Verlag Berlin Heidelberg, 2014 Ultra-high-rate GPS nationallicence Structural monitoring nationallicence Receiver tracking parameters nationallicence Measurement filtering nationallicence Differential GPS nationallicence GPS seismology nationallicence Moschas Fanis Laboratory of Geodesy and Geodetic Applications, Department of Civil Engineering, University of Patras, 26500, Patras, Greece aut Stiros Stathis Laboratory of Geodesy and Geodetic Applications, Department of Civil Engineering, University of Patras, 26500, Patras, Greece aut GPS Solutions Springer Berlin Heidelberg 19/2(2015-04-01), 173-185 1080-5370 19:2<173 2015 19 10291 https://doi.org/10.1007/s10291-014-0378-4 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10291-014-0378-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Moschas Fanis Laboratory of Geodesy and Geodetic Applications, Department of Civil Engineering, University of Patras, 26500, Patras, Greece aut NATIONALLICENCE 700 1- Stiros Stathis Laboratory of Geodesy and Geodetic Applications, Department of Civil Engineering, University of Patras, 26500, Patras, Greece aut NATIONALLICENCE 773 0- GPS Solutions Springer Berlin Heidelberg 19/2(2015-04-01), 173-185 1080-5370 19:2<173 2015 19 10291