Abbreviations/Acronyms: A

active pixel sensor; active pixel system; Advanced Photon Source; American Physical Society; atom probe spectroscopy; autocorrelated photon spectroscopy

absolute (kelvin degrees), absorption, acoustic, alpha particle, analog, anode, ampere, amplitude, area, atomic, atomic mass, Helmholtz free energy, mass number, nucleon number

acousto-optic

attoampere

analog to analog, anti-aliasing (AA optical filter e.g. low pass filter), approximate absolute temperature, atomic absorption

Analog Adaptive Resonance Theory

The ABg model or Harvey-Shack is a method of describing bidirectional scattering from isotropic or polished surfaces.

software package Atmospheric Correction Now

acquisition control processor

AC thin film electroluminescent display devices

adaptive delta modulation; add-drop multiplexer

ammonium dihydrogen phosphate, adaptive Doppler processing

adaptive differential pulse code modulation; varies the binary step interval for the required bandwidth for a given signal-to-noise ratio.

angular displacement sensor

automatic data transmission; anthradithiophene

Auger electron spectroscopy; atomic emission spectrometry

atomic force microscope

atomic fluorescence spectroscopy

aerospace ground equipment

Advisory Group on Electron Tubes

ampere-hour

airborne intelligent display; area imaging device

American Institute of Physics

atomic layer deposition

atomic layer epitaxy

adaptive learning image analysis system

advanced lightwave platform

active matrix; air mass; amplitude modulation

active-matrix liquid crystal display

ampere

acousto-optic beam deflector

acousto-optic deflector

area of interest; automatic optical inspection

acousto-optic modulator

acousto-optic tunable filter

all points addressable

automatic power control; angle polished connector

atmospheric pressure chemical vapor deposition

avalanche photodiode

application programming interface

average picture level

American Precision Optics Manufacturers Association

automatic picture transmission

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

activated reactive evaporation

acceptable reliability level

antiresonant reflecting optical waveguide

automatic spectrum display and signal recognition system

amplified spontaneous emission

active swept frequency interferometer radar