There is a need for development of a commercially available economical acoustic doppler backscatter instrument which canbe easily deployed and used to simultaneously acquire current profile data and backscatter amplitude information relating to particle concentrations in the water column. the… More

A requirement exists for an enconomical system of area navigation for use by divers in a variety of military and commercial applications. we propose to develop an acoustic transponder based range/range type of navigation system withincreased capability in terms of position accuracy, diver position… More

There is a need for a high data rate underwater acoustic telemetry system which will operate at a high rate of data or voice transmission in a reverberent, multipath environment. this proposal describes a system concept which, if successfully implemented, will allow transmission of data at rates up… More

There is a requirement for reliable, secure communication between a submarine and torpedo. this proposal describes a new system concept for digital acoustic data transmission based on spread spectrum coded acoustic signal transmission. the final goal of this system development will be production of… More

There is a requirement for a reliable, secure method for retrieval of data from moored instrumentation arrays. thesearrays, which contain current meters, tide gauges, temperature sensors, and other oceanographic instruments, acquire and store data over a period of weeks or months and then are… More

There is a requirement for a reliable tactical underwater data link to link under- water and surface Navy assets. In this Phase I effort, we propose to evaluate 3 alternative techniques which are potential solutions to meeting the requirement, as well as recommend the one which is the most feasible.… More

There is a requirement for a seafloor mapping system that will provide high resolution imagery in very shallow water when rigidly mounted to a 24 foot boat that is advancing at up to 10 knots. In this Phase I effort we propose to determine the feasibility of meeting this requirement with a prototype… More

There are many requirements for a seafloor imaging system which has high resolution capability in both cross track and along track directions. Current technology provides for side looking sonar coross track resolution of a few centimeters, however, along track resolution is limited because of… More

Datasonics is, at the present time, working with NSWC on the development of an underwater acoustic communications system designed to extend LINK-11 tactical Navy battle group communications to include submarines and/or other Navy underwater assets. Our underwater acoustic telemetry is based on a… More