Super Short Baseline System

SSBL (Super Short Base Line) is a common underwater acoustic positioning technology widely used for real-time location tracking of underwater targets such as ROVs, AUVs, tow fish, and divers. The system features both transmitter and receiver installed on a single vessel or platform. By analyzing the phase and time difference of the returned acoustic signals from the underwater target, it calculates the relative position.

SSBL systems have a simple structure and are easy to install, making them especially suitable for environments with limited space or where rapid deployment is needed. Depending on application requirements and accuracy levels, SSBL can be categorized into basic, multi-channel high-precision, and hybrid systems integrated with inertial navigation. These advancements not only enhance underwater operational stability but also support complex navigation control and dynamic compensation.

The technology continues to evolve and has expanded from traditional uses to energy development, ocean research, and seabed infrastructure monitoring, making it a key component in modern underwater positioning systems.