Electroacoustic transducers, mentioned in the section Speed measurement, measure the time that elapses between the transmission of a sharp acoustic "ping" from the keel of a ship and the return of the echo from the sea bottom.
A vision- and fringe pattern-based rotational speed measurement system was proposed to measure the instantaneous rotational speed (IRS) with high accuracy and reliability.
This current is similarly used to produce a speed measurement.
The equip functions involve: capability of distance measurement, capability of wave speed measurement.
The use of properly heated anemometers can reduce wind speed measurement uncertainty, thus reducing financial uncertainty.
The true wind speed measurement u is reduced to the 10 m reference height u10 using a neutral-layer logarithmic wind profile after Tennekes88.
It needs to be pointed out that the switching speed measurement was limited by the equipment rather than the device itself.
The present method improves the accuracy of ultrasound speed measurement further by resisting echoes.
Its speed measurement accuracy is highly concerned by drivers, lawyers, policemen and metrologists as well.
The test machine is instrumented for temperature, torque, and speed measurement.
As a result, accurate time of flight and ultrasound speed measurement are achievable.
