: 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
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
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