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Title: Multichannel heterodyning for wideband interferometry, correlation and signal processing

Abstract

A method of signal processing a high bandwidth signal by coherently subdividing it into many narrow bandwidth channels which are individually processed at lower frequencies in a parallel manner. Autocorrelation and correlations can be performed using reference frequencies which may drift slowly with time, reducing cost of device. Coordinated adjustment of channel phases alters temporal and spectral behavior of net signal process more precisely than a channel used individually. This is a method of implementing precision long coherent delays, interferometers, and filters for high bandwidth optical or microwave signals using low bandwidth electronics. High bandwidth signals can be recorded, mathematically manipulated, and synthesized.

Inventors:
 [1]
  1. (Oakland, CA)
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
872474
Patent Number(s):
5943132
Assignee:
Regents of University of California (Oakland, CA) LLNL
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
multichannel; heterodyning; wideband; interferometry; correlation; signal; processing; method; bandwidth; coherently; subdividing; narrow; channels; individually; processed; frequencies; parallel; manner; autocorrelation; correlations; performed; reference; drift; slowly; time; reducing; cost; device; coordinated; adjustment; channel; phases; alters; temporal; spectral; behavior; net; process; precisely; implementing; precision; coherent; delays; interferometers; filters; optical; microwave; signals; electronics; recorded; mathematically; manipulated; synthesized; narrow bandwidth; microwave signal; signal processing; narrow band; wave signal; signal process; coherent delay; wave signals; reducing cost; bandwidth optical; /356/

Citation Formats

Erskine, David J. Multichannel heterodyning for wideband interferometry, correlation and signal processing. United States: N. p., 1999. Web.
Erskine, David J. Multichannel heterodyning for wideband interferometry, correlation and signal processing. United States.
Erskine, David J. Fri . "Multichannel heterodyning for wideband interferometry, correlation and signal processing". United States. https://www.osti.gov/servlets/purl/872474.
@article{osti_872474,
title = {Multichannel heterodyning for wideband interferometry, correlation and signal processing},
author = {Erskine, David J.},
abstractNote = {A method of signal processing a high bandwidth signal by coherently subdividing it into many narrow bandwidth channels which are individually processed at lower frequencies in a parallel manner. Autocorrelation and correlations can be performed using reference frequencies which may drift slowly with time, reducing cost of device. Coordinated adjustment of channel phases alters temporal and spectral behavior of net signal process more precisely than a channel used individually. This is a method of implementing precision long coherent delays, interferometers, and filters for high bandwidth optical or microwave signals using low bandwidth electronics. High bandwidth signals can be recorded, mathematically manipulated, and synthesized.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {1}
}

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