GPSrChive Discussion Forum

Posted: **Mon Jan 04, 2021 6:24 pm**

Hi,
I've noticed that the navigation file URL included in the RINEX file header is no longer valid due to server change.

As reported on https://cddis.nasa.gov/

US Government security requirements no longer permit CDDIS to offer data via traditional unencrypted anonymous ftp; this service was discontinued on October 31, 2020. All data are still available, however access must be via HTTPS or ftp-ssl.
Instructions with examples and our FAQ can be found at: https://cddis.nasa.gov/Data_and_Derived ... ccess.html

Example of RINEX header as generated today (GPSMap 66s, firmware 6.00, chipset 2.80)

Code: Select all

     3.04           OBSERVATION DATA    M (MIXED)           RINEX VERSION / TYPE
RINEXWRITER         GARMIN              20210104 163750 UTC PGM / RUN BY / DATE
Download navigation file using this link:                   COMMENT
ftp://cddis.gsfc.nasa.gov/gnss/data/daily/2021/004/21p/     COMMENT
BRDC00IGS_R_20210040000_01D_MN.rnx.gz                       COMMENT
GARMIN MARKER                                               MARKER NAME
                                                            MARKER NUMBER
                                                            MARKER TYPE
                                                            OBSERVER / AGENCY
GPSMAP 66s 6.00                                             REC # / TYPE / VERS

You can get the file from this URL: ftp://gdc.cddis.eosdis.nasa.gov/pub/gps/data/daily/ (anonymous access, require FTPS)

Posted: **Mon Jan 04, 2021 7:17 pm**

Thank you for the sharp eye and bug report!

We have forwarded this information to Garmin software engineers for evaluation.

GPSrChive Discussion Forum

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Re: RINEX navigation file URL