May 2008 Update
•NEW! On Fisheries page: NEW turtle.
•NEW! On Hull and Berth page: NEW mosaic image of a hull.
•NEW! On Leak and Flow page: NEW video of high flow.
•NEW! On Product Options page: New Spreader Lens.
•NEW! Two new pages on the website: Links and News. The links page features people and companies who use DIDSON in some way. News has news and press on it.

WEB LINKS ABOUT DIDSON
This incomplete list is a sample of some web findings. A simple web search using the word DIDSON will yeild many more. Other suggested search topics include: DIDSON survey, DIDSON mosaic, DIDSON 3D, DIDSON inspection, to name just a few.

Fisheries
• Alaska Department of Fish & Game Sports Fish Home page with many reports and much information available
• Alaska Department of Fish & Game Commercial Fisheries Home page with many reports and much information available
• Big Brothers (DIDSON & SIPPER) Peer Into Black Drum Bedrooms
• Measuring Nighttime Spawning Behavior of Chum Salmon Using DIDSON
• Estimating Fish Size from DIDSON images
• Counting Fish in Rivers Just Got Easier
• Validation of a DIDSON-LR for Fish Passage Enumeration
• Using Sound Images to Count Salmon in the Fraser River, Canada
• Field Testing of New Acoustic Camera
• Fisheries Assessment & Monitoring - Fairbanks, Alaska
• Forward Looking Sonar (DIDSON) Image Enhancement-Brown Univ.
• New Technology Holds Great Promise for Fisheries Science
• Assessment of Salmon Runs to the Copper River
• Clear vision on fishy behavior
• Use of the DIDSON Camera to Evaluate Upstream Fish Passage
• Sonar reveals the secret fears of fish
• Underwater sonar reveals the hidden secrets of NSW rivers
• The role of sonar in Copper River salmon escapement monitoring and commercial fisheries management
• River Teifi Hydro acoustic Fish Counter Update-2006
• Coastal Fisheries Institute Hydro-acoustics Lab Web Page-Louisiana State Univ.
• Alaska King Salmon Adventure
• Fish Behavior and the Performance of Baited Fishing Gear
• Preliminary results toward the development of trawl modifications to reduce seafloor effects on the Bering Sea shelf
• Fish Counting Technology for Sustainable Fisheries Management
• US Department of Interior/Bureau of Reclamation search
• Follow that Fin! Using Sonar to Monitor Eels

Other Applications
• USGS Vessel Used to Test Counter-Terrorism Surveillance Equipment
• Selected Technologies: Identification (ID)
• Threatened Shipwreck Sites in Southeast Alaska

REPORTS
Fisheries
• Evaluation of a DIDSON for Detecting and Estimating the Size of Migrating Salmon -Alaska Dept of Fish & Game -Aug 2007
• AFS San Francisco Abstracts List -Sept 2007
• DIDSON Fish Assessment Selected Advanced Tools Tutorial -Updated April 2006
• Assessment of DIDSON for application in fish migration studies -New South Wales, Australia -April 2006
• Video and acoustic camera techniques for studying fish under ice: a review and comparison -PNNL in Alaska -April 2006
• Applying Sonar Technology to Pollock Fisheries Management -North Pacific Research Board -2005
• Evaluation of DIDSON as Fisheries Monitoring Tool: Exploiting the Acoustic Advantage -UK Env. Agency -March 2005
• Accuracy and precision of fish-count data from a DIDSON imaging system -ICES Journal of Marine Science -Aug 2005
• Validation of a Long Range DIDSON for Fish Passage Enumeration in the Methow River -Columbia River Inter-Tribal Fish Commission & Yakama National Dept of Fisheries -Nov 2005
• Use of DIDSON to Verify Split-Beam Estimates of Salmon Flux and to Examine Fish Behaviour in the Fraser River -Pacific Salmon Commission -Nov 2005
• Case Study: Alaska Dept Fish & Game Uses DIDSON to Count Spawning Salmon -Ed Belcher, Sound Metrics -Jan 2004
• The Feasibility of Estimating Migrating Salmon in Turbid Rivers Using DIDSON -Alaska Dept Fish & Game -March 2004
• Imaging Fall Chinook Salmon Redds in the Columbia River -USGS Western Fisheries Research Center -2004
• Fish Release Site -CA Dept. of Water Resources -2003
• Alaska DIDSON Mounts

Security & Inspection
• Vision in Turbid Water -MTS/ADCI -2006
• DIDSON Diver Evaluation -Nat. Ocean Service -2005
• Ship Hull Inspection by Hull-Relative Navigation and Control -Bluefin Robotics & MIT -2005
• DHINS Technology Demonstration -US Coast Guard Group, Key West, FL-2004
• Acoustic Lens Camera and Underwater Display Combine for Hull and Berth Inspections -Oceans 2003
• Dual-Frequency Acoustic Camera: A Candidate for Untethered Underwater Vehicles -University of Washington, IEEE -2002
• Object Identification with Acoustic Lenses -MTS -2001

SOUND METRICS PUBLICATIONS
• SMC 2 page brochure
• DIDSON – an Acoustic Camera
• Evolution of Counting Fish
• Special Features for Fisheries Applications
• Fisheries Applications Two Page Flyer
• Inspection & Security Applications Two Page Flyer
• Diver Held Unit Two Page Flyer
• DIDSON Mounted on Vehicles Flyer
• DIDSON Mounts Flyer

SOUND METRICS POSTERS
Feel free to use these!
• General Informational Poster about DIDSON - pdf
• Products Overview Poster - pdf
• DIDSON used for Inspections Poster - pdf
• DIDSON used for Identification Poster - pdf
• DIDSON used in Fisheries Poster - pdf
• DIDSON Mounts Poster - pdf