Bernese GNSS Software Version 5.2 Tutorial

6 Terminal Session: ThursdayWhen introducing this information, the program ADDNEQ2 will issue the following message:### SR AOPTNET: You are going to use relative constraints for stationcoordinates/velocities from station info file.Please keep in mind that you will NOT constrain theestimated results but only the improvements of theapriori values.If only the improvements (column Correction) for the velocities are constrained, you mustmake sure that also the a priori values (column A priori value) for the velocities are identicalto obtain (column Estimated value) the same velocities for a group of stations. You canverify this in the input velocity file ${P}/INTRO/STA/EXAMPLE.VEL:...253 WTZR 14201M010 -0.01605 0.01713 0.01009 Ib08 EURA254 WTZZ 14201M014 -0.01605 0.01713 0.01009 NNR EURA...264 ZIM2 14001M008 -0.01353 0.01807 0.01205 NNR EURA266 ZIMM 14001M004 -0.01353 0.01807 0.01205 Ib08 EURA...If this is not the case, you should unify the a priori values.The relative constraining of the velocity estimates is confirmed in the section of the inputparameters (below the a priori coordinates and velocities) of the ADDNEQ2–programoutput:...Relative constraints between stations:... relative constraints for velocitiesStation names ... N (m/year) E (m/year) U (m/year)----------------------------------------------- ... --------------------------------------WTZR 14201M010 WTZZ 14201M014 ... 0.00001 0.00001 0.00001ZIM2 14001M008 ZIMM 14001M004 ... 0.00001 0.00001 0.00001Introducing this modified station information file instead of the original one you will getthe following estimates for the station velocities in Kötzting and Zimmerwald:...Station coordinates and velocities:----------------------------------Reference epoch: 2005-01-01 00:00:00Station name Typ A priori value Estimated value Correction RMS error ...---------------------------------------------------------------------------------------- ......WTZR 14201M010 VX -0.01605 -0.01657 -0.00052 0.00038VY 0.01713 0.01797 0.00084 0.00016VZ 0.01009 0.00983 -0.00026 0.00042...VU -0.00011 -0.00051 -0.00040 0.00055 ...VN 0.01555 0.01561 0.00007 0.00017 ...VE 0.02028 0.02122 0.00094 0.00014 ...WTZZ 14201M014 VX -0.01605 -0.01657 -0.00052 0.00038VY 0.01713 0.01798 0.00085 0.00016VZ 0.01009 0.00983 -0.00026 0.00042...VU -0.00011 -0.00051 -0.00040 0.00055 ...VN 0.01555 0.01561 0.00007 0.00017 ...VE 0.02028 0.02122 0.00094 0.00014 ...Page 98AIUB