Deep Sound Channel (DSC) aka SOFAR
The SOFAR channel (short for Sound Fixing and Ranging channel), or deep sound channel (DSC),[1] is a horizontal layer of water in the ocean at which depth the speed of sound is at its minimum. The SOFAR channel acts as a waveguide for sound, and low frequency sound waves within the channel may travel thousands of miles before dissipating.
Initializations for Detection, Classification, and Localization and Detection, Classification, and Localization - Density Estimation respectively. It corresponds to using sensor data to detect, classify, and localize marine fauna. Density estimation is also referred to as "Whales per cubic foot"
Critical System Sensor Density
This is a measurment that calculates a minimum number of sensors required to completely cover a geographical or localized region. It refers to the placement and number of the sensors.