ground truth measurements

ground truth measurements

[′grau̇nd ‚trüth ‚mezh·ər·məns]
(geophysics)
Measurements of various properties, such as temperature and land utilization, which are conducted on the ground to calibrate observations made from satellites or aircraft.
References in periodicals archive ?
In order to check the accuracy of equipment that collects macro-texture data, a method to compare ground truth measurements with data collected by such equipment needs to be developed.