****************************************************************************** BSW Electronic Mail 15-May-2020 14:45:45 CET Message Number 0386 ****************************************************************************** Author: Pierre Fridez and Stefan Schaer Subject: IGb14 - additional remarks Dear BSW Users, with respect to bswmail 385 regarding "IGb14 CRD/VEL/PSD/FIX files" from 13-May-2020, we would like to clarify a few points that were raised by users: 1) the switch to IGb14 accommodates for the increasing number of IGS14 reference stations affected by discontinuities and the fact that the coordinates have to be extrapolated over an increasingly long time span. We refer to the IGS Mail 7921 describing this in more detail and which is available at: https://lists.igs.org/pipermail/igsmail/2020/007921.html 2) the procedure to switch to IGb14 is outlined in bswmail 385, you will additionally have to change the definition in your PCF file for the variables V_REFINF and V_REFPSD to IGSb14, to take into account the new ref files downloaded. 3) the switch to IGb14 is not mandatory, i.e. the software will continue to work if you choose to remain in IGS14, i.e. the use of the new IGb14 based products does not require to base your processing on IGb14. 4) the introduction of the new IGb14 based products will not introduce *significant* discontinuities in your ongoing processing even if you remain in IGS14. 5) the advantage of switching to IGb14 is an increased number of reference stations available and also of 5 more years of input data on which these coordinates are based. However, the IGb14 continues to be aligned to IGS14 and the switch to IGb14 is not expected to introduce discontinuities in the IGS product series. We therefore do recommend to switch to IGb14. We hope to have clarified the points and as always, please contact us at bernese@aiub.unibe.ch for any questions. Best regards, The BSW Team [Mailed from: pierre fridez ]