6533b7cefe1ef96bd1256f05
RESEARCH PRODUCT
Apodization of imaging systems by means of a random spatially nonstationary absorbing screen
Manuel Martínez-corralMarek KowalczykPedro Andréssubject
Physicsbusiness.industryStochastic processAstrophysics::Instrumentation and Methods for AstrophysicsShot noiseImpulse (physics)Atomic and Molecular Physics and OpticsElectronic Optical and Magnetic Materialssymbols.namesakeAmplitudeOpticsFourier transformApodizationsymbolsComputer Vision and Pattern RecognitionSpatial frequencybusinessImpulse responsedescription
The amplitude impulse response (AIR) of coherent imaging systems with random binary apodizers is analyzed. Formulas for the mean value and the variance of the AIR are derived for two statistical one-dimensional models of apodizers: (1) nonuniform low-density shot noise and (2) a nonuniform unipolar synchronous random process. We show that for both models a high signal-to-noise ratio is achieved within the central peak and the low-order sidelobes of the AIR. Apodizers based on the second model permit higher values of the signal-to-noise ratio than those based on the first one.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1992-11-01 | Journal of the Optical Society of America A |