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Beamforming or spatial filtering is a signal processing technique used in sensor arrays for directional signal transmission or reception. [1] This is achieved by combining elements in an antenna array in such a way that signals at particular angles experience constructive interference while others experience destructive interference.
An adaptive beamformer is a system that performs adaptive spatial signal processing with an array of transmitters or receivers. The signals are combined in a manner which increases the signal strength to/from a chosen direction.
Pronunciation follows convention outside the medical field, in which acronyms are generally pronounced as if they were a word (JAMA, SIDS), initialisms are generally pronounced as individual letters (DNA, SSRI), and abbreviations generally use the expansion (soln. = "solution", sup. = "superior").
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Stedman's Medical Dictionary is a medical dictionary developed for medical students, physicians, researchers, and medical language specialists. Entries include medical terms , abbreviations , acronyms , measurements , and more.
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Time domain beamformer works by introducing time delays. The basic operation is called "delay and sum". It delays the incoming signal from each array element by a certain amount of time, and then adds them together. A Butler matrix allows several beams to be formed simultaneously, or one beam to be scanned through an arc. The most common kind ...
Abbreviation Meaning U OSM: urine osmolality UA: urinalysis unstable angina U/A upon arrival UAE: Uterine Artery Embolization (synonym for Uterine Fibroid Embolization) : UBT: urea breath test