Continuously Operating Reference Stations - CORS

Dataset Name

File Name Type File Name Structure File Name Example
(RINEX File Layouts
Daily GNSS Observation Data {ssss}{ddd}0.{yy}o.gz

dsrc1330.10o.gz
bru1940.98.o.gz
gait1120.94o.gz
1lsu0010.04o.gz
Summary of the Daily Observation Rate File {ssss}{ddd}0.{yy}S gait1120.94S
oro_2490.97S
ybhb3000.99S
dscr1330.10S
Daily Meteorological Data File (RINEX MET) {ssss}{ddd}0.{yy}m.gz prmi0120.08m.gz
usno1570.08m.gz
vikh3660.08m.gz
vith0010.10m.gz
Daily Global Navigation File brdc{ddd}0.{yy}n.gz brdc0400.94n.gz
brdc1000.98n.gz
brdc2120.00n.gz
brdc1330.10n.gz
Site Log File
Site Log File - Current Format {ssss}_{yyyy}-{mm}-{dd}.log 1lsu_20031206.log
txpr_20070727.log
dsrc_20050706.log
ztl4_20090609.log
Site Log file - Historical Format ** {ssss}_{yyyy}-{mm}.log grar0112.log
dsrc0207.log
hklo0012.log
hopb9802.log


** This is a historical format that will occur one time on initial load of the data. This will not be a continuous log file CLASS would receive.

Keys for Variable in file Layout
Key Definition
{ssss} 4-digit site name, alpha-numeric character station code, lowercase characters, may be zero padded (currently is not), may include special characters, e.g. underscore.
{yyyy} 4-digit year
{yy} 2-digit year
{ddd} 3-digit day of year; Julian Date
{dd} 2-digit day
{hh} 2-digit hour
{mm} 2-digit month

 

Key for Constants in File Layout
Key Definition
0 Daily File
o Observation File
m Meteorological File
n Navigation File
brdc Designates Global broadcast navigation files from all the satellites
.gz g-zipped compression
S Summary File
.log Log file

 

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Datatype

The data types available for CORS are:

RINEX File Layouts

- Daily GNSS Observation Data: Daily observation data, created at original sampling rate, and file is gzipped.

- Summary of the Daily Observation File (RINEX SUM/TEQC summary file of the daily observation data file): Translation, Editing, and Quality Check (TEQC) summary fole of contents of daily observation data file (at original sampling rate)

- Daily Meteorological Data File (RINEX MET): Daily meteorological data and qzip-compressed

- Daily Global Navigation File: Navigation data broadcast from Global Navigation Satellite System (GNSS) satellites

Site Log File

- Site Log File - Current Format: This file format will be utilized for all additional Site Log Files that will be archived by CLASS.

- Site Log File - Historical Format: Historical reference of site log files. This naming structure is no longer in use, but currently there are 1969 site log files with this structure that need to be stored and referenced.

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Station

Lists the 1,000+ stations/sites from which data is collected.

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Temporal

Refers to the time span of interest to the user. This section of the search page allows the user to define the range of dates/times of interest.

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UTC

Coordinated univeral Time (UTC) is the international time standard. It is the current term for what was referred to as Greenwich Meridian Time (GMT). Zero (0) houts UTC is midnight in Greenwich, England, which lies on the zero longitudinal meridian. Universal time is based on a 24 hour clock, therefore, afternoon hours such as 4 pm UTC are expressed as 10:00 UTC (sixteen hours, zero minutes).

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