...
Note | ||
---|---|---|
| ||
Please note that operations of the Fishing Echo Sounder Simrad EK 60 / EK 80 requires experienced scientific staff on board and can be only operated on request. The system is not operated by the ship's crew. Announce Request operations with the Fishing the Fishing Echo Sounder Simrad EK 60 / EK 80 to AWI-Logistics in sufficient time prior to the cruise and clarify the data transfer after the cruise. Data quality of Fishing Echo Sounder Simrad EK 60 / EK 80 is decreased by operating other Echo Sounders. Repeatable disturbances wered were detected from simultaneously operating a) POSIDONIA, b) Deep Water Sounder Simrad EA 500 DWS, c) Sonar Doppler Speed Log DOLOG and dc) Sediment Echo Sounder Parasound P70. Switch off these Echo Sounders for high data quality. |
Summary
Sensorweb integration | ||||
---|---|---|---|---|
| ||||
The sounder operates several frequencies simultaneously thus allowing to detect fish in different depths. |
Sensorweb integration | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
| ||||||||||
|
Sensorweb integration | ||||
---|---|---|---|---|
| ||||
Transducer Frequency:
Metadata (Metadata Plugin) | ||
---|---|---|
| ||
18, 38, 70, 120, 200 kHz |
...
Contacts
Sensorweb integration | |||||||||
---|---|---|---|---|---|---|---|---|---|
| |||||||||
|
Components
Metadata (Metadata Plugin) | ||
---|---|---|
| ||
The system consits of five "split beam" transducers (ES-18, ES-38B, ES-70C, ES-120C, ES-200C) located in the box keel, five General Purpose Transceivers (GPTs) in Geräteraum and a computer with data acquisition and processing software installed in wissenschaftlichen Arbeitsraum. |
...
38 kHz
...
70 kHz
...
120 und 200 kHz
...
...
...
Subdevices
Position
Subdevices
Sensorweb integration | ||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ||||||||||||||||||||||||
|
Position
Sensorweb integration | ||||||||
---|---|---|---|---|---|---|---|---|
| ||||||||
|
Data logging, storage and archiving
Logged parameters
Sensorweb integration | ||||||
---|---|---|---|---|---|---|
| ||||||
|
...
Central geographical ship's position and time standard
Metadata (Metadata Plugin) | ||
---|---|---|
| Time synchronising of the computers is regulated via the affiliation to the Windows domain. Additionally, the NMEA-String ZDA is stored in the data files.||
Rawdata storage on board
Metadata (Metadata Plugin) | |||
---|---|---|---|
| |||
Geographical ship's position |
Zentrale geographische Schiffsposition und Zeitnormal
Die Zeitsynchronisierung der PCs wird über die Zugehörigkeit zur Windows-Domain geregelt. In den Datendateien wird zusätzlich der NMEA-String ZDA abgespeichert.
Die geographische Schiffsposition wird mit dem NMEA-String an den Master-PC übergeben und in den Datendateien abgespeichert.
Eine Zentrierung der GPS-Position auf die Schwinger findet nicht statt.
-------------------Parameters
Resources
Events
---------------------------------------------------
Additional information
External Manuals
Zentrale geographische Schiffsposition und Zeitnormal
Die Zeitsynchronisierung der PCs wird über die Zugehörigkeit zur Windows-Domain geregelt. In den Datendateien wird zusätzlich der NMEA-String ZDA abgespeichert.
Die geographische Schiffsposition wird mit dem NMEA-String an den Master-PC übergeben und in den Datendateien abgespeichert.
Eine Zentrierung der GPS-Position auf die Schwinger findet nicht statt.
Datenspeicherung und Archivierung
...
*Rohdaten an Bord:* Die herstellerspezifische Datenerfassungs\- und Verarbeitungs-Software ER60 erzeugt Rohdaten mit folgender Dateistruktur: || Stammverzeichnis || Verzeichnisname || Dateiname || | \\polsrv1\data01\fishsounder\ | Reisenummer | Dateipräfix-Dyyyymmdd-Thhmmss.raw | mit yyyy = Jahr; mm = Monat; dd = Tag; hh = Stunde; mm = Minute; ss = Sekunde. so z.B.: || Stammverzeichnis || Verzeichnisname || Dateiname || | \\polsrv1\data01\fishsounder\ | ANT25-3\ | ANT25_3-D20090113-T144735.raw | | | | ANT25_3-D20090113-T145849.raw| Dabei belegt die Dateistruktur das folgende Volumen: {metadata-list}|| Volumen (MB pro Tag) ca. | 3500 || || Anzahl Dateien pro Tag ca. | 100 ||{metadata-list} *Rohdaten an Land:* Je nach Absprache mit der AWI-Logistik und mit dem oben genannten Geräteverantwortlichen besteht die Möglichkeit die gewonnenen Rohdaten, nachdem sie mit Metadaten versehen worden sind, über [PANGAEA|http://www.pangaea.de/search?l&q=polarstern] zur Verfügung zu stellen.
Metadata list |
---|
Dship
Metadata (Metadata Plugin) | ||
---|---|---|
| ||
Metadata list |
---|
Data archiving on land
Metadata (Metadata Plugin) | ||
---|---|---|
| ||
Metadata list |
---|
Calibration
The EK80 system must be calibrated. Ideally, the calibration is executed before and after the measurement in the working area. So, the calibration parameters can be defined dependent the actual water conditions. For this reason a calibration on previous cruises will not lead to optimal results.
The calibration is performed using three winch systems positioning the calibration sphere below the transducers.
The winch system as well as their control must operated by the scientists. The laboratory electronic engineer may assist the setup of the system.
A calibration must be planned like all other scrientific work prior the cruise, because the calibration work needs time. Ideally half a day is requested, but will take longer (may be a whole day), if weather conditions decrease.
Ideally the calibration is performed in calm sea without wind. If wind forces the drift of the ship, the winches will not hang vertical anymore but will also drift. Under this conditions it is very difficult, to move the calibration sphere to the requested locations.
Furthermore, the calibration must be planned, because calibration equipment is not permanently on board. The winches etc. need storage capacities and are stored during harbour visit in Bremerhaven, only.
If you are planning to execute a calibration, please add the that work in formula "Einsatzplanung" and step in contact with schiffskoord@awi.de for further planning.
Documentation
Sensorweb integration | ||||
---|---|---|---|---|
| ||||
|
...
...