RTI products because of its principle, the advantages of break through the traditional mechanical rotation sensor current meter, on the basis of using acoustic transducer as sensor, transducer transmitting sound pulse wave, pulse acoustic wave through the uneven distribution of sediment particles in water and plankton backscattered backscatter body, received by transducer signal, the determination of doppler frequency shift and measure the velocity. It has the features of velocity profile which can directly measure section, undisturbed flow field, short testing time and large velocity range.

Doppler current meter is a necessary underwater device in the seabed observation network system. It can be configured with three different frequencies of 300KHz / 600KHz / 1200KHz according to different scanning distance.