我们曾使用转子式海流计在天津新港测量过海底泥沙的洄淤,因泥沙的附着和对转子机械零件的磨损等原因而使测得结果极不可靠。此后,我们开展了声学多普勒测流仪器的研制。利用多普勒原理测流时,机体不会影响流速场的固有特性,并可得到每秒毫米级的流速。泥沙及生物附着都不会影响测量结果。在河口、港湾等浅水海区更能发挥仪器的优点。 We have used rotor-type flowmeters to measure the siltation of seabed sediment in Xingang, Tianjin. The result of the measurement is very unreliable due to sediment adhesion and wear to the rotor parts. Since then, we have developed acoustic Doppler flow measurement equipment. When using the Doppler principle to measure the flow, the body does not affect the inherent properties of the flow field, and the flow rate in millimeters per second is obtained. Sediment and biological attachments will not affect the measurement results. In the estuaries, harbors and other shallow waters more able to play the advantages of the instrument.