This step describes sensors which are connected to small platforms e.g. bouys, glider, etc and for platform itself e.g. satellites.
- The platform transfers its sensor data via satellite internet connection link to e.g. a ftp-server or sends its by mail
- The "Near Realtime Data Collection"-System (NRT-System) installed at the AWI computer department provides the downloading of these sensor data automatically. The system checks the server at a specified time or in time intervals for new sensor data. If available the data will be downloaded and stored at a central temporary disk space, ready for the archiving procedure
- Further more the NRT-System can separate certain sensor data out of the downloaded file(s) for storing in the central database (NRT-DB). Thereby the file-format must meet the requirements of a standard NRT-Data-Input-File (read more).
To define this procedure for the NRT-System some informations are to declare once:
- For accessing the server for downloading the access control parameters consist of servername, username, password are necessary.
- For selection the downloadable file(s), the directory- and filename(s) must be defined by regular expressions.Placeholder as YEAR, MONTH and DAY are possible.
- At last we need the time period for checking of new sensor data.
If these few information are compiled, it is time for step 3...
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