Hybrid spectrum analyzer system

Details Hybrid spectrum analyzer system Hybrid spectrum analyzer system

1982-09-16

1984-06-26

Tokar, Michael J.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Analysis of complex waves

364713, 364485, 364726, G01R 2317

Patent

active

044568770

ABSTRACT:
One or more input signals to be processed are summed with a pseudo random noise signal to preserve the signal phase, are placed on a carrier, are processed by a one-dimensional optical spectrum analyzer, and a time history thereof is stored in a digital corner-turn memory in a time/frequency domain. The memory is read with an address map that corner-turns the stored data, where the resulting frequency/time signal then is fed to a second one-dimensional optical spectrum analyzer. Since signal phase is preserved, a two-dimensional analog signal in a frequency/frequency plane is provided.

REFERENCES:
patent: 3952186 (1976-04-01), Speiser et al.
patent: 4016413 (1977-05-01), Bramley
patent: 4106103 (1978-08-01), Perrault
Optical Engineering, "Acousto-Optic Implementation of Real- & Near-Real-Time Signal Processing," Berg et al., Jul./Aug. 79, pp. 420-428, vol. 18, No. 4.
Active Optical Devices, "New Acousto-Optic Signal Processing Architectures & Applications", Casasent et al., 1979, pp. 186-192, SPIE vol. 202.
SPIE vol. 180, Real-Time Signal Processing 11 (1979), "Wideband Real Time Fourier Analyzer Using Folded Spectrum Techniques", Anderson, et al., pp. 128-133.

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