Multichannel heterodyning for wideband interferometry, correlation and signal processing
- Oakland, CA
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.
- Research Organization:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- DOE Contract Number:
- W-7405-ENG-48
- Assignee:
- Regents of University of California (Oakland, CA)
- Patent Number(s):
- US 5943132
- OSTI ID:
- 872474
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
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
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