Aquatic & Fisheries GPS Fish Positioning System Star-Oddi.com

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 geographic 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 (FPS) (see picture below).

 

• 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 computer, using Star-Oddi's software and communication box
• Customers define their own text to appear on each DST GPS housing, for return purposes
• For use in rivers, lakes and smaller ocean areas, Star-Oddi delivers a portable acoustic transmitter, Fish Positioning Sounder

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 routes, and provide major contribution to sustainable management of fish resources.

• 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

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.