Base station files are written hourly to our FTP server in both Trimble DAT and the international RINEX file types. All files have been zipped using PKZIP. Files must be unzipped using a product such a WinZip¨ or any other package that can unzip files.
Files will be kept on the server for only two weeks. After two weeks, the files will be archived and available for a small data retrieval fee. For assistance or more information, contact the lab at (501) 569-8534.
Downloading Procedures
File Names: All files are named based on UTC time.
The format is - YYMMDDHH (Year;Month;Day;Hour) where hour is in UTC time.
World Wide Web
The current browsers of today can be used as an FTP client. Therefore, all of our
files are on our FTP server and not on the WWW server.
- 1. Go to - ftp://argis.ualr.edu/gpsdata.dat
- 2. Click on ''gpsdata"
- 3. Click on the following for what you need:
- "dat" - Trimble DAT files
- "rinex" - International RINEX files
- "almanac" - GPS satellite information.
- 4. Click on file to begin downloading
File Transfer Protocol - FTP
For those of you who do not have browsers with FTP capabilities, use a dos prompt and follow the instructions below.
- 1. ftp argis.ualr.edu
- Login: Anonymous Password: valid email address
- 2. ftp> binary (when downloading binary file i.e. base files)
- 3. ftp> cd gpsdata (to move to the data directory)
- 4. ftp> ls (to list directories)
- 3. Move to on the the following directories for what you need:
- "dat" - Trimble DAT files
- "rinex" - International RINEX files
- "almanac" - GPS satellite information
- 6. ftp> ls (to list files)
- 5. ftp> get 'filenames' (example: ftp> get 98081018.zip)
