Hi
Need help
I m doing static GPS sessions in Pakistan. Now I want to process these sessions to establish control points. One method is that I forward the data to OPUS, AUSPOS etc. But I want to process these data sets by downloading IGS stations data in TBC by making IGS stations as master control points.
My question is can I download GPS data of IGS stations.
If yes please send me the link as well
Check the SOPAC gps data center. SOPAC has the most complete data base I've come across,
gschrock, post: 433706, member: 556 wrote: If you go to the IGS map: http://www.igs.org/network you can click on a stations and see if there are daily rinex files for download.
Just to expand on that, IGS doesn't actually host the RINEX files, but they tell you what data center has the files. This station's page lists the primary data center as CDDIS.
http://www.igs.org/igsnetwork/network_by_site.php?site=hyde
This page tells you that CDDIS is NASA's Crustal Dynamics Data Information System and has a link where you can go find the RINEX files.
http://www.igs.org/about/data-centers
Larry Scott, post: 433773, member: 8766 wrote: Check the SOPAC gps data center. SOPAC has the most complete data base I've come across,
SOPAC also has, or links, rapid and post, clock and ephemeris data from just about every source. It's one stop shopping.
Thanks a lot that's really helpful
When I worked in India (early 90's), the nearest CORS was in Taiwan. That was all we had. No AUSPOS, OPUS, RTX, etc. We did several days of observations, then processed against the CORS. If I recall the spread over three days was in the 3 to 5 cm range after forcing a float solution (Trimble software) and using the precise ephemerides. Plenty good enough for the times. It was to establish a local base station to be used in a World Bank project to try and put out some huge mine fires. I wonder if that base is still there. It was in Dhanbad, Bihar state.
More recently I needed some CORS data in Ecuador. I had to go IN PERSON to the IGM (their NGS-USGS-NGA-BLM equivalent) office and pay $51 for a day of CORS data. Cash only. And they would not accept a $50 bill (they do use the US dollar there, they prefer the US dollar coins over dollar bills). Only $20's or lower, I guess due to counterfeiting concerns.
Try this site:
https://cddis.nasa.gov/Data_and_Derived_Products/GNSS/RINEX_Version_3.html
There is a link to the CDDIS ftp site. Follow the link to the RINEX 3 files. You can also start here: ftp://cddis.gsfc.nasa.gov/gnss/data/
Peter Lazio
