I have 3D position of few of GNSS stations obtained from AUSPOS service in ITRF2014 frame. I have 3D position of same stations from CSRS-PPP service in ITRF2020 reference frame. I want to transform ITRF2014 position into ITRF2020 position to compare the results. I came to know the transformation parameters to move from ITRF2014 to ITRF2020 are available in IERS website. However, I needed an explanation on how to achieve this such as brief theoretical overview, softwares or scripts that does this job, any walk-through resources e.g. document or videos that streamlined this process.
You need a software for the Helmert transformation or an online converter. Here are some useful links:
General information: https://en.wikipedia.org/wiki/Helmert_transformation
Online converter: https://www.lddgo.net/en/convert/helmert-coordinate-transform
Software including the Helmert transformation:
https://software.applied-geodesy.org/en/
https://proj.org/en/9.4/operations/transformations/helmert.html
App demo video: https://www.youtube.com/watch?v=4BEg9qCT5HI
Search for more: https://www.google.com/search?q=helmert+transformation
Here are two online converters used by the geodetic community:
ETRF/ITRF Coordinate Transformation Tool (ECTT)
EUREF Permanent GNSS Network (oma.be)
and
HTDP – Horizontal Time-Dependent Positioning
HTDP - Horizontal Time-Dependent Positioning (noaa.gov)
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