apodization

noun

ap·o·di·za·tion ˌa-pə-də-ˈzā-shən How to pronounce apodization (audio)

-ˌdī-ˈzā-

electrical engineering

: the process of altering a signal (such as one emitted by an electrical sensor) to make its mathematical description smoother and more easily manipulatable

The system also implements a standard suite of spectral estimation algorithms. The user can … use apodization with different weighting functions or compensate for distortions arising from equal data spacing.

Physics Today, March 1993

apodize

ˈa-pə-ˌdīz How to pronounce apodization (audio)

transitive verb

apodizes; apodized; apodizing

Amplitude and phase errors tend to increase at high spatial frequencies, so we weighted the data with a function that is 1 at a frequency of 0 and falls to 0 at a spatial frequency of 2.8 cycles per arc second. A similar function was used to apodize the visibilities before reconstructing the images.

R. R. Howell et al., Science, 4 Oct. 1985

Word History

Etymology

borrowed from French apodisation, from a- a- entry 2 + pod- pod- (alluding to the pieds "feet" produced by diffraction in an optical image) + -isation -ization

First Known Use

1964, in the meaning defined above

单词	apodization
释义	apodization noun ap·o·di·za·tion ˌa-pə-də-ˈzā-shən -ˌdī-ˈzā- electrical engineering : the process of altering a signal (such as one emitted by an electrical sensor) to make its mathematical description smoother and more easily manipulatable The system also implements a standard suite of spectral estimation algorithms. The user can … use apodization with different weighting functions or compensate for distortions arising from equal data spacing. Physics Today, March 1993 apodize ˈa-pə-ˌdīz transitive verb apodizes; apodized; apodizing Amplitude and phase errors tend to increase at high spatial frequencies, so we weighted the data with a function that is 1 at a frequency of 0 and falls to 0 at a spatial frequency of 2.8 cycles per arc second. A similar function was used to apodize the visibilities before reconstructing the images. R. R. Howell et al., Science, 4 Oct. 1985 Word History Etymology borrowed from French apodisation, from a- a- entry 2 + pod- pod- (alluding to the pieds "feet" produced by diffraction in an optical image) + -isation -ization First Known Use 1964, in the meaning defined above
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