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Dear Roberto,

CDDIS provides the means to download data via secure ftp. Please email me at lori.j.tyahla@nasa.gov and I can provide the ports.

Lori

This information should be available in the RINEX Version 3.04 Format Document, which is available at this link: https://files.igs.org/pub/data/format/rinex304.pdf?_gl=1*1xoj37e*_ga*MTcxMzgzNzI2LjE2NDIxNzgwODM.*_ga_Z5RH7R682C*MTY5MjExOTI2Ni4zMzMuMS4xNjkyMTE5Mjc0LjUyLjAuMA..

Hello, We can't help you directly, but try contacting the IGS ionosphere working group. Their website is: https://igsiono.uwm.edu.pl and their contact information is on that page. There are also some related mailing lists: igs-iwg@lists.igs.org iono-wg@listerv.unb.ca Hopefully they can help you out....

Starting at GPS week = 2238, the IGS switched the file name format of many of its products to a different, longer format. So, the file is no longer available in the short name format. For more information, please go to https://igs.org/products/#orbits_clocks . For the product you are looking for: Fi...

Specific information on the locations of GNSS receiver stations can be found by looking at the station logs on the IGS website available here: https://files.igs.org/pub/station/log/?_gl=1*f0gc3e*_ga*MTcxMzgzNzI2LjE2NDIxNzgwODM.*_ga_Z5RH7R682C*MTY4NjIzMDQwMi4zMDUuMC4xNjg2MjMwNDAyLjYwLjAuMA.. https://...

Can I get the exact location of the receiving station?

What may be happening is that the Python Requests library is looking for your .netrc (or _netrc on windows) file in your home directory. Since it does not find it there no credentials are passed, and you are redirected to the Earthdata Login page. What you are downloading is the HTML code for that w...

Hello,

Please see our FAQ page for downloading data at https://cddis.nasa.gov/About/CDDIS_File_Download_FAQ.html, specifically question #14.

hello： I try to use the following cmd: wget --auth-no-challenge " https://cddis.nasa.gov/archive/doris/data/cs2/2017/cs2rx17001.001.Z " to download the file ,but i got a file which is only 14kb, and i can not use uncompress cmd to unzip this file. what should i do to solve this problem. th...

Hello, Starting with week 2238, the IGS made the decision to switch the GNSS products to long name format. After week 2237, the long name files are archived in the main weekly directory, and the igs20 subdirectory is no longer used. The long name file format is described in the following document. h...