Definitions for "VREF"
Approach reference speed. The speed at which an aircraft is stabilized and flown during a landing approach.
approach speed - landing reference speed in the normal landing configuration
Reference Voltage
Vref Volts A Voltage applied to the Non-Inverting input of an Amplifier to level shift the output signal.
Keywords:  velocity, deck, height, wind, reference
the reference wind velocity at deck height, m/s