Search found 51 matches

by CDDIS_support_Lori
Wed Oct 14, 2020 4:39 pm America/New_York
Forum: Questions/Comments
Question: Precise Orbit Determination products?
Replies: 1

Re: Precise Orbit Determination products?

IGS analysis centers provide satellite orbit solutions to the CDDIS using pre-determined schedules, e.g., sub-daily, daily, or weekly, depending upon the data product. The IGS analysis center coordinator retrieves these solutions and produces a combined product, which is then in turn archived at the...
by CDDIS_support_Lori
Wed Oct 14, 2020 4:32 pm America/New_York
Forum: Questions/Comments
Question: Precise Orbit Determination products?
Replies: 1

Precise Orbit Determination products?

Where can I get Precise Orbit Determination (POD) products?
by CDDIS_support_Lori
Wed Oct 14, 2020 4:25 pm America/New_York
Forum: Questions/Comments
Question: How can I access VLBI data?
Replies: 1

Re: How can I access VLBI data?

VLBI data are available through secure ftp and other methods. VLBI databases since 1979 are available online. Access the VLBI data via the web: https://cddis.nasa.gov/archive/vlbi/ivsdata/.

Detalied information and examples for using these methods can be found on our Achive Access page.
by CDDIS_support_Lori
Wed Oct 14, 2020 4:23 pm America/New_York
Forum: Questions/Comments
Question: How can I access VLBI data?
Replies: 1

How can I access VLBI data?

How can I access VLBI data at the CDDIS?
by CDDIS_support_Lori
Wed Oct 14, 2020 4:22 pm America/New_York
Forum: Questions/Comments
Question: How are SLR data stored at the CDDIS?
Replies: 1

Re: How are SLR data stored at the CDDIS?

SLR data are available in subdirectories by data type, satellite, and year. The data type supported by the ILRS is on-site normal points, found in directories at https:// cddis.nasa.gov/slr/data/npt_crd.
by CDDIS_support_Lori
Wed Oct 14, 2020 4:10 pm America/New_York
Forum: Questions/Comments
Question: How can I access SLR data?
Replies: 1

Re: How can I access SLR data?

Satellite laser ranging (SLR) data are available through secure ftp and other methods. SLR data since 1976 are available online. Access the SLR data via the web at https://cddis.nasa.gov/archive/slr/data/ . Detalied information and examples for using other methods can be found on our Achive Access p...
by CDDIS_support_Lori
Tue Feb 25, 2020 11:34 am America/New_York
Forum: Questions/Comments
Question: IGS stations
Replies: 4

Re: IGS stations

Information on antenna files can be found at ftp://igs.org/pub/station/general/antenna_README.pdf
by CDDIS_support_Lori
Tue Feb 25, 2020 11:31 am America/New_York
Forum: Questions/Comments
Question: IGS stations
Replies: 4

Re: IGS stations

More detailed information about IGS stations including site guidelines and proposing a new station can be found at igs.org/network/information.
by CDDIS_support_Lori
Fri Feb 14, 2020 12:54 pm America/New_York
Forum: Questions/Comments
Question: BRDC navigation file
Replies: 1

Re: BRDC navigation file

The file https://cddis.gsfc.nasa.gov/archive/gnss/data/daily/ yyyy / ddd / yy n/brdc ddd 0. yy n.Z ( yyyy is the 4-digit year, ddd is the three-digit day of year and yy is the two-digit year) is the daily broadcast ephemeris file. This file is a merge of the individual site navigation files into one...
by CDDIS_support_Lori
Fri Feb 14, 2020 12:08 pm America/New_York
Forum: Questions/Comments
Question: IGS stations
Replies: 4

Re: IGS stations

The igs.org/network/list.html web page provides a list of current IGS sites and links to their site logs; a map is also available.