Search found 62 matches

by CDDIS_support_Lori
Wed Sep 28, 2022 12:52 pm America/New_York
Forum: Questions/Comments
Question: Questions regarding Hourly updates of RINEX FIles
Replies: 4

Re: Questions regarding Hourly updates of RINEX FIles

ARK,

I don't know if that's possible or how you would go about getting them. I am sorry we can't help with that.

The CDDIS Team
by CDDIS_support_Lori
Wed Sep 28, 2022 12:00 pm America/New_York
Forum: Questions/Comments
Question: Creating a Python program to automatically download the ionex file given any date as input to the program.
Replies: 1

Re: Creating a Python program to automatically download the ionex file given any date as input to the program.

The most common reason for this is that you are not properly passing your credentials to Earthdata login. If you do not pass your credentials properly you are automatically redirected to the Earthdata Login web page. Since you are making an HTTPS request, the server is assuming you are using a web b...
by CDDIS_support_Lori
Tue Sep 27, 2022 4:56 pm America/New_York
Forum: Questions/Comments
Question: Questions regarding Hourly updates of RINEX FIles
Replies: 4

Re: Questions regarding Hourly updates of RINEX FIles

Dear ARK, Thank you for your question. In order to create the hourly files, the CDDIS requires input from external sources. These sources upload the files hourly so the CDDIS cannot create the hourly files in less than an hour. Though the input files are supposed to be uploaded hourly, sometimes the...
by CDDIS_support_Lori
Wed Aug 10, 2022 12:54 pm America/New_York
Forum: Questions/Comments
Question: Motion of geosynchronous orbits
Replies: 1

Re: Motion of geosynchronous orbits

We are passing this question along to our science community.
by CDDIS_support_Lori
Wed Aug 10, 2022 12:53 pm America/New_York
Forum: Questions/Comments
Question: Motion of geosynchronous orbits
Replies: 1

Motion of geosynchronous orbits

I am interested in the motion of geosynchronous orbits. I am looking for a drifting geosynchronous satellite equipped with laser retroreflectors for which I could find a precise ephemeris. I am looking for an ephemeris approximately 120 days in length. An accuracy of 1 to 5 meters would be sufficien...
by CDDIS_support_Lori
Fri Jul 08, 2022 11:57 am America/New_York
Forum: Questions/Comments
Question: ERP and SP3 file missing
Replies: 1

Re: ERP and SP3 file missing

The files should be available now.
by CDDIS_support_Lori
Fri Jul 08, 2022 11:55 am America/New_York
Forum: Questions/Comments
Question: How to download the gnss product from cddis with C#
Replies: 1

Re: How to download the gnss product from cddis with C#

We do not have an example for downloading data via C#. We have examples using other techniques at:

https://cddis.nasa.gov/Data_and_Derived_Products/CDDIS_Archive_Access.html
by CDDIS_support_Lori
Wed May 11, 2022 1:35 pm America/New_York
Forum: Questions/Comments
Question: Question about .sp3 files
Replies: 1

Re: Question about .sp3 files

You have the correct directory locations for the different sp3 files. The short name sp3 files are located in https://cddis.nasa.gov/archive/gnss/products/ , and the long name ones are in https://cddis.nasa.gov/archive/gnss/products/mgex . You just need to add the GPS week subdirectory you want afte...
by CDDIS_support_Lori
Wed May 11, 2022 1:31 pm America/New_York
Forum: Questions/Comments
Question: Question about .sp3 files
Replies: 1

Question about .sp3 files

I am writing to ask how to find a .sp3 file with full records in CDDIS. I tried to get through all .sp3 files in " https://cddis.nasa.gov/archive/gnss/products/ " and " https://cddis.nasa.gov/archive/gnss/products/mgex " and did not find a right one which was like that dipicted i...
by CDDIS_support_Lori
Mon Apr 18, 2022 1:24 pm America/New_York
Forum: Questions/Comments
Question: GNSS分析软件
Replies: 1

Re: GNSS分析软件

The CDDIS is a separate archive from BKG, so we are not responsible for their data. The BKG data center has been experiencing an outage since Mar. 25. The CDDIS does not archive BRDC*GN.rnx files. We only have the mixed navigation files with name format, BRDC*MN.rnx. The BRDC files available at the ...