Moored environmental profiler

Variations in the environmental parameters of the ocean cause amplitude and phase fluctuations to be introduced to an acoustic signal propagating in the ocean. To be able to completely under stand the nature of these fluctuations, it is necessary to have the capability to sample the environmental parameters of the medium as a function of depth at selected points along the propagation path. To meet this latter requirement, the Naval Research Laboratory (NRL) has developed a low-cost environmental sampling device which can measure and record selected environmental parameters in the upper portion of the water column.