Abbreviations/Acronyms

Abbe refractometer; acoustic radiometer; acoustic resonance; active region; alpha ray; amplitude ratio; antireflective; aperture ratio; applied research; argon; aspect ratio; atomic reactor; augmented reality

clear aperture

common-aperture multifunction array radar

launch numerical aperture; low-noise amplifier

mutual coherence function — The mutual coherence function is a complex quantity that is the time-averaged value of the cross correlation function of a light field at two points within an aperture with a time delay that relates the path difference to the point of observation of the interference fringes. The mutual coherence function is the key function in coherence theory and the study of partially coherent light.

numerical aperture

reduced aperture

synthetic aperture radar

variable-aperture far-field