The instrument was calibrated using a combination of astronomical measurements and metrology. We find that the main wind-induced pointing errors on timescales of minutes are caused by the feed arm ...

The bigger the difference in air pressure,the faster the wind. Winds are named by the compass direction they are ... so strong that they can destroy the measuring instruments!

They work by measuring the time it takes for an ultrasonic audio pulse to be reflected the receiver across a known distance. Wind direction can be calculated by taking velocity readings from two ...

The 8-inch collection area offers superior accuracy, measuring every ... vane - Uses three cups to measure wind speed, while a wind vane measures wind direction. The vane always points in the ...

After more than four and a half years measuring global winds from space ... which report atmospheric properties like wind direction, air pressure, temperature and humidity, were grounded during ...