The HY-PSB series, China’s first commercial application of nonlinear sonar instrument, is compact, all-inone, integrated, small and portable parametric array  sub-bottom profiler, adopting single-beam parametric  array technology, used for sub-bottom profile exploration and precise water depth measurement. The HY-PSB  series offers a wide range of frequency options with primary frequencies available at 100/200/300 KHZ and a  broad difference frequency coverage, at the same time providing highly accurate depth results and penetration data. The transducer pressure-resistant house could be customized, for example the standard products come in three versions: 300m, 2000m and 6000m in terms of pressure resistance. Due to its small and compact structure, it is highly suitable for use on submersible platforms such as ROVs and AUVs.