Research on fish ecology of a new generation of "video"sonar DIDSON. DIDSON is currently the only use of audio"lens" to generate almost equivalent image quality image of high resolution sonar in the low turbid water. At present in the sale of 271 units of DIDSON, there are 120 for fishery ecological areas, accounting for 44% of the total, in 12 countries around the world, there are nearly 6 years.

DIDSON can be used to evaluate the fish biomass,understanding of fish behavior, observation of fishupstream and downstream movement, study on fish habitat,gear research etc..

Technical characteristics

Implementation of automatic or manual counting fish

Dynamic picture is equivalent to the video quality,convenient behavior research

To observe the realization, mating, spawning, feedingmigratory behavior under natural conditions

The rock complex water environment, can deduct background, enhancing display on fish

The technical data of equipment

The technical data of equipment

Some users to the field of fishery

American geological survey USGS

American National Oceanic and Atmospheric AdministrationNOAA

The Irish Institute of Oceanography

National Engineering Research Institute of Japan

America coastal fishing and habitat Research Institute

International Pacific Halibut Commission (IPHC)

America Nebraska Fisheries Commission

Pacific salmon Commission (Canada)

The German Society of aquatic products

USA Denver Bureau of reclamation

American Alaska board of Fisheries and fishing

America fisheries and Wildlife Management Bureau

The British Ministry of the environment

In New South Wales, Australia's primary industry

American Louisiana State University

America South University of Florida

University of Tokyo of Japan

Canadian ocean and Fishery Bureau