shot noise

(redirected from Photon noise)
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Related to Photon noise: Shot noise

shot noise

or

shot effect

n
(Electronics) the inherent electronic noise arising in an electric current because of the discontinuous nature of conduction by electrons. Also called: Schottky noise
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"We hope to approach the photon noise limit, which will give us contrast ratios close to 10-8, allowing us to see planets 100 million times fainter than the star."
In order to further investigate the robustness of the proposed FCN, before reconstruction via FBP, photon noise is introduced into the dual-energy projections.
Poisson noise is also known as short or photon noise.
However, two properties of this instrument favor the use of filters: the need to properly sample the interferogram to reach the required spectral resolution, and the distributed photon noise.
In our case: [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII] is photon noise signal, [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII] is noise signal of current equal to photo diode one, and [U.sub.n] is total noise signal.
The error in the nightly measurements, primarily due to photon noise, is about 0.05%.
Furthermore, we can compute a theoretical error for this estimate, based on camera gain, readout noise and photon noise considerations.
This 3T architecture also suffers from temporal noises (i.e., photon noise and reset noise) which can be reduced using correlated double sampling (CDS) architectures in the voltage domain, and by using improved, finely tuned, nonstandard CMOS processes.