000195212 001__ 195212
000195212 003__ CZ-ZdVUG
000195212 005__ 20191202121202.0
000195212 041__ $$aeng
000195212 040__ $$aABC039$$bcze
000195212 1001_ $$aŠtěpánek, Petr
000195212 24510 $$aDORIS scale consistency in GOP time series
000195212 5203_ $$aWe analyzed the scale of the DORIS (Doppler Orbitography and Radiopositioning Integrated by Satellite) solutions w.r.t. DPOD (ITRF) 2014 with the main goal to explain the scale consistencies and to find the optimal solution reaching low-biased and consistent scale time series. Our analysis profits from 5 different strategies based only on GOP analysis center solution, using DORIS Doppler exchange format data 2.2. A difference in the sequence of the solutions directly corresponds to one of the changes in the solution settings: data elevation dependent weighting (sin2 E), application of data validity indicators and application of phase center - reference point correction. We processed multi-satellite and single-satellite solutions for the time period 2011.0 - 2017.0. Our analysis examines scale inconsistency issues in 2011/2012 and in 2015. 2011/2012 scale increment is explained as a result of the concurrence of changes in satellite constellation and change in the provider data validity standards for Cryosat-2 and Jason-2. The scale increment in 2015 is explained as the effect of change in the standards for phase center - reference center corrections for Saral, Jason-2 and Cryosat-2. Moreover, comparing the solutions with and without elevation dependent data downweighting using the same elevation cut off (10 degrees), we found a significant reduction of scale bias and scale variation applying the data downweighting. We demonstrated that the solution, which is completely free from the additional data associated with observations in DORIS exchange format 2.2, includes the data downweighting law and the corrected value of HY-2A antenna offset, eventuates in a consistent scale time series with the offset w.r.t. DPOD 2014 (version 1.0) under 1cm and its weekly variations around 2 mm.
000195212 655_4 $$aprezentace
000195212 7730_ $$92018$$dZdiby:VUGTK,2018.
000195212 8564_ $$uhttps://ids-doris.org/images/documents/report/ids_workshop_2018/IDS18_s2_Stepanek_ScaleConsistencyGOPtimeSeries.pdf
000195212 85642 $$ahttps://www.rvvi.cz/riv?s=rozsirene-vyhledavani&ss=detail&n=0&h=RIV%2F00025615%3A_____%2F18%3AN0000050%21RIV19-MSM-00025615
000195212 909CO $$ooai:knihovna.vugtk.cz:195212$$pNUSL
000195212 910__ $$aABC039
000195212 980__ $$aseda
000195212 985__ $$astepanek
000195212 985__ $$ariv
000195212 985__ $$autvar24
000195212 985__ $$anusl