GPS-MET Report: Missing of NOAA NGS CORS Dataset

July 7, 2017

Number of GNSS Raw Data from NOAA NGS CORS in 2017

NOAA NGS CORS (CORS, hereafter) is primary provider of raw GNSS data in the USA. Number of the raw data downloaded from CORS is ~850 after addition of GNSS stations in GPS-MET system in early March, 2017.

There was sudden missing data event from July 1, 2017 (DOY 182 = July 1, 2017), and no data was available in some periods in the event even though multiple trail (4 times) of download n GPS-MET system.

Number of GNSS Raw Data from NOAA NGS CORS from June 1, 2017

The data missing problem started around 00Z, July 1, 2017, and continued till 12Z, July 5, 2017. During the problematic period, number of data changes from 0 (totally missing) to ~850 (normal condition).

Related Links

CORS https://www.ngs.noaa.gov/CORS/
CORS Products https://www.ngs.noaa.gov/CORS/data.shtml
CORS Site Notices https://www.ngs.noaa.gov/CORS/notices.shtml

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