electrical scanning

noun
1.
Electronics. a technique for varying the sector covered by a transmitting or receiving antenna by electrical means without moving the antenna.
2.
Also called electronic scanning. Television. the technique used in scanning a surface to reproduce or transmit a picture.
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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Other methods such as laser, sonar, and electrical scanning are used to evaluate such features.
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