Technology focus - how does an ADCP work?

[@senalchandrasekara8874]

5 sound emitters. How do we decern which out of the five pings emitted by each of the emitters is observed once reflected back to the device? Would it really matter though if we can't decern each reflected ping? Does it really effect the reading by a significant amount?

[@Sonardyne]

This relates back to the fundamentals of how an ADCP works. Radial motion (along the path of the acoustic pulse) is the only motion that affects Doppler shift. An ADCP applies the Doppler shift principle to measure velocities along its individual beams and with the divergent design of an ADCP, each beam will make measurements for different locations.