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Title: OPTIMIZATION OF THE SIGNAL-TO-NOISE RATIO IN PRESENCE OF NOISE AND PILE-UP FLUCTUATIONS.

Authors:
; ;
Publication Date:
Research Org.:
Centro Informazioni Studi Esperienze, Milan (Italy)
OSTI Identifier:
4378002
Report Number(s):
CISE--107; CONF-670520--1
Resource Type:
Technical Report
Resource Relation:
Other Information: From Conference on Semiconductor Nuclear Particle Detectors and Circuits, Gatlinburg, Tenn. UNCL. Orig. Receipt Date: 31-DEC-67
Country of Publication:
Country unknown/Code not available
Language:
English
Subject:
N26110* --Instrumentation--Radiation Detection Instruments-- General Detectors & Monitors; AMPLIFIERS; BACKGROUND; CRYSTAL COUNTERS; EFFICIENCY; NOISE; OPTIMIZATION; PULSES; SEMICONDUCTORS; SIGNALS; VARIATIONS

Citation Formats

Bussolati, C., De Lotto, I., and Gatti, E.. OPTIMIZATION OF THE SIGNAL-TO-NOISE RATIO IN PRESENCE OF NOISE AND PILE-UP FLUCTUATIONS.. Country unknown/Code not available: N. p., 1967. Web.
Bussolati, C., De Lotto, I., & Gatti, E.. OPTIMIZATION OF THE SIGNAL-TO-NOISE RATIO IN PRESENCE OF NOISE AND PILE-UP FLUCTUATIONS.. Country unknown/Code not available.
Bussolati, C., De Lotto, I., and Gatti, E.. 1967. "OPTIMIZATION OF THE SIGNAL-TO-NOISE RATIO IN PRESENCE OF NOISE AND PILE-UP FLUCTUATIONS.". Country unknown/Code not available. doi:.
@article{osti_4378002,
title = {OPTIMIZATION OF THE SIGNAL-TO-NOISE RATIO IN PRESENCE OF NOISE AND PILE-UP FLUCTUATIONS.},
author = {Bussolati, C. and De Lotto, I. and Gatti, E.},
abstractNote = {},
doi = {},
journal = {},
number = ,
volume = ,
place = {Country unknown/Code not available},
year = 1967,
month = 1
}

Technical Report:
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  • A superconductive resonant cavity is energized with radio frequency energy. The cavity includes a tuning stub having a piece of semiconductor material mounted on the end. An incoming communication signal modulates a light source which is optically coupled to the semiconductor by a fiber optic bundle. piece of semiconductor material mounted on the end. An incoming communication signal modulates a light source which is optically coupled to the semiconductor by a fiber optic bundle. This varies the dielectric constant of the semiconductor which, in turn, varies the resonant frequency of the cavity. An angle modulation demodulator senses the frequency ofmore » the radio frequency oscillations in the cavity and produces a replica of the communication signal with improved signal to noise ratio.« less
  • A bootstrap algorithm for reconstructing the temporal signal from four of its fractional Fourier intensity spectra in the presence of noise is described. An optical arrangement is proposed which realises the bootstrap method for the measurement of ultrashort laser pulses. The measurement of short laser pulses which are less than 1 ps is an ongoing challenge in optical physics. One reason is that no oscilloscope exists today which can directly measure the time structure of these pulses and so it becomes necessary to invent other techniques which indirectly provide the necessary information for temporal pulse reconstruction. One method called FROGmore » (frequency resolved optical gating) has been in use since 19911 and is one of the popular methods for recovering these types of short pulses. The idea behind FROG is the use of multiple time-correlated pulse measurements in the frequency domain for the reconstruction. Multiple data sets are required because only intensity information is recorded and not phase, and thus by collecting multiple data sets, there is enough redundant measurements to yield the original time structure, but not necessarily uniquely (or even up to an arbitrary constant phase offset). The objective of this paper is to describe another method which is simpler than FROG. Instead of collecting many auto-correlated data sets, only two spectral intensity measurements of the temporal signal are needed in the absence of noise. The first can be from the intensity components of its usual Fourier transform and the second from its FrFT (fractional Fourier transform). In the presence of noise, a minimum of four measurements are required with the same FrFT order but with two different apertures. Armed with these two or four measurements, a unique solution up to a constant phase offset can be constructed.« less