GPS Fish Positioning System DST GPS Fish Tag, Fish Positioning Sounder and Simrad GPS Sonar Overview: Sensors: GPS acoustic receiver, temperature and depth Memory size: Custom programming Battery life: Up to 3 years Depth: Down to 3000m  System Description The GPS Fish Positioning System was developed by Star-Oddi and Simrad Norway in cooperation with the Institute of Marine Research in Norway and the Marine Research Institute in Iceland. The system consists of: -DST GPS fish tag -GPS transmitting sonar/transmitter. DST GPS can be attached externally or implanted into fish. DST GPS can receive information about geographical position from satellites via Simrad sonars onboard vessels. The vessel's GPS position is coded and transmitted underwater via the Simrad sonar signal. If a tagged fish is within 4 km range of the GPS sonar, the DST GPS will receive the vessel's geographical position and store the GPS information together with measured temperature, depth and date/time. For use in rivers, lakes and smaller ocean areas, Star-Oddi offers a small and portable acoustic GPS transmitter, named Fish Positioning Sounder (see picture below).

Related Products: Data Storage Tags,Fish Archival Tags: -DST micro  -DST milli  -DST centi -DST CTD -DST GPS Fish Tag Underwater Temperature Recorders: -Starmon mini  -DST milli-T -DST centi-T

 

Some of the research projects where the system has been used are: cod research in Icelandic territorial waters with a Simrad sonar, in Icelandic largest fjord with Star-Oddi portable Fish Positioning Sounder (FPS) , and in Lake Thingvallavatn (Iceland) on brown trout with the portable FPS.

Click here to read more about the research in Lake Thingvallavatn.

Click here and view a video (mpeg) from the tagging in Lake Thingvallavatn (20 Mb). 


The DST GPS fits well for medium sized round fish (example: cod, saithe, salmon, anadromous trout and charr) or flatfish (example: plaice, Greenland halibut, yellowtail flounder).

Simrad sonar on board vessel can transmit acoustic signals to area larger than 100 Km² in only one hour of sailing, at the sailing speed of 9 Nm/h.

Features

• The DST GPS fish tag has an acoustic receiver, listening to GPS signals, and also records the depth and temperature of the fish into its memory.
• Simrad's ship sonars SP60, SP70, and SP90 can be used for transmitting the GPS codes to Star-Oddi's DST GPS fish tags.
• When a DST GPS tagged fish is caught, the data can be uploaded from the tag into a PC computer, using the software and communication box.
• Customers define their own text to appear on each DST GPS housing, for recapture purposes.
• For use in rivers, lakes and smaller ocean areas, Star-Oddi delivers a portable acoustic transmitter, Fish Positioning Sounder.

View a short animation (mpeg) of the GPS system (5 Mb)

Fish Migratory Pattern
General knowledge about migratory route of fish is limited. Information on geographical distribution of commercially interesting fish resources are available, but until present it has not been possible to follow single fish or schools of fish in time and space over great distances. The GPS Fish Positioning System will increase knowledge on fish migratory routs, and provide major contribution to sustainable management of fish resources.

Examples of Research Objectives

• Data for improving stock assessment and management
• Data for stock models, accessibility and availability of fish resources
• Behaviour analysis, migration and distribution
• Salmon and anadromous trout and charr, coastal migration

-Click here to get more detailed examples 
-DST GPS Fish Positioning Article
- Thingvellir Iceland  DST GPS used on Brown trout Case Study

The picture below shows the migration pattern of three cods that were tagged with DST GPS tag by the Marine Research Institute in Iceland 2004.

Patent
US 6.163.503
AU 752208
CA 2.292.424
DE 0978001
DK PA 200000016
EP 0978001
FR 99906441.3
GB 0978001
IE 99906441.3
IS 4674
IS 5397
NZ 501186
SE 99906441.3