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	A/D Acceleration measurement Acoustic applications Acoustic arrays Acoustic beams Acoustic calibration Acoustic communication Acoustic correlation Acoustic correlators Acoustic detectors Acoustic devices Acoustic diffraction Acoustic direction-finding Acoustic distance measurement Acoustic Doppler current meters Acoustic Doppler current profiler (ADCP) Acoustic fields Acoustic filters Acoustic imaging Acoustic imaging/mapping Acoustic intensity Acoustic interferometry Acoustic materials Acoustic measurements Acoustic mode Acoustic navigation Acoustic networks Acoustic noise Acoustic noise measurement Acoustic parametric devices Acoustic particle velocity Acoustic position measurement Acoustic positioning Acoustic propagation Acoustic propagation in nonhomogeneous media Acoustic propagation in nonlinear media Acoustic propagation in random media Acoustic propagation loss Acoustic pulses Acoustic ranging Acoustic receivers Acoustic reflection Acoustic refraction Acoustic remote sensing Acoustic resonators Acoustic scattering Acoustic sensing Acoustic sensors Acoustic signal analysis Acoustic signal detection Acoustic signal processing Acoustic signal variability Acoustic surface waves Acoustic surface-wave devices Acoustic telemetry Acoustic testing Acoustic thermometry Acoustic tomography Acoustic towed array Acoustic tracking Acoustic transducer arrays Acoustic transducers Acoustic transient propagation Acoustic variables measurement Acoustic velocimeters Acoustic velocity Acoustic velocity measurement Acoustic wave absorption Acoustic wave interferometry Acoustic wave propagation Acoustic wave reflection Acoustic wave refraction Acoustic wave scattering Acoustic wave transmission Acoustic waveguides Acoustic-beam steering Acoustical imaging Acoustical oceanography Acoustical propagation Acoustics Acoustoelectric signal processing Acoustoelectric transducers Active classification Active contour models Active sonar Actuators Acute Adaptive Adaptive arrays Adaptive beamformer	Adaptive beamforming Adaptive control Adaptive control, nonlinear systems Adaptive decoding Adaptive detection Adaptive equalization Adaptive equalizers Adaptive estimation Adaptive filtering Adaptive filters Adaptive Kalman filtering Adaptive radar Adaptive sampling Adaptive signal detection Adaptive signal processing Adaptive systems ADCP Advanced instrumentation Aircraft Aircraft detection and tracking Aircraft parameter estimation Aircraft radar Aircraft-deployed Algorithms Aliasing Altimetry AM Ambient noise Ambient noise measurement Ambiguity function Amino acid Amplitude modulation Amplitude shift keying Analog processing circuits Analytical research Anechoic coating Angle spread Angular velocity control Anisotropic medium Anisotropic noises Anodes Antenna arrays Antenna measurements Antenna radiation patterns Antenna temperature Antenna theory Aperiodic arrays Aperture antennas Applications in passive sonar, radar and geophysical work Approximation methods Aquaculture Aquatic animals Architecture Arctic acoustics Arctic regions Argos (satellite location) ARQ (automatic-repeat-request) Array beamforming Array element localization Array gain Array geometry Array navigation Array positioning Array processing Array shape estimation Array shape estimation/tracking Array signal Array signal processing Array synthesis Arrays Artificial intelligence Asymmetric beam pattern Asymptotic stability Attenuation Attenuation compensation Attitude control Aurora Autocoherence Automated surveying Automatic target tracking Automatic testing Automatic-repeat-request Autonomous acoustic recording buoy Autopilots Autoregressive modeling Autoregressive moving-average processes Autoregressive processes AUV (autonomous underwater vehicle) AUV navigation AUV propulsion Azimuth resolution

- B -
	Backpropagation algorithm Backpropagation training Backscatter Backscattering Bandpass filters Bartlett Bathymetric map matching Bathymetric surveys Bathymetry Bathymetry precision Batteries Bayes (optimal) threshold detection and estimation Bayes methods Bayes procedures Beam forming techniques Beam noise Beam pattern analysis Beam patterns Beam space Beam steering Beam-forming Bearing estimation Bearings-only target motion analysis Bed topography Behavioral modeling Benchmarking Bessel functions Bibliographies Bicoherence Bioacoustics Biocommunications Biology computing Bioluminescence Bioluminescent plankton Biomedical acoustics	Biomimesis Biomimetics Biosensors Biosonar Bistatic reverberation Bit-serial Blind estimation Block coding Bohai sea ice Book reviews Bottom interaction Bottom loss Bottom mounts Bottom scattering Boundary layers Boundary value problems Boundary-element methods Boundary-layer measurements Bragg scattering Breaking waves Broad-band propagation Broadband Broadband acoustic multipath Broadband communication Bubble dissolution Bubble entertainment Bubble measurements Bubble plumes Bubble pulse Bubble size distribution Bubbles Buoys Buried-object detection Burst noise