Doppler signal analyzing apparatus

Details Doppler signal analyzing apparatus Doppler signal analyzing apparatus

1986-03-10

1988-01-19

Tokar, Michael J.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Analysis of complex waves

324 77E, G01R 2316

Patent

active

047206748

ABSTRACT:
A Doppler signal analyzing apparatus is capable of frequency analysis of a Doppler signal with frequency and time resolutions that match the frequency band of a signal to be analyzed. The signal to be analyzed is divided into a plurality of frequency bands by bandpass means (10.sub.1, 10.sub.2, 10.sub.3), and signals in the frequency bands which have passed through the bandpass means are acquired by signal acquiring means (11) over time slots that are smaller for higher-frequency signals and larger for lower-frequency signals. The signals acquired by the signal acquiring means are subjected to a Fourier transform by Fourier transform means (14).

REFERENCES:
patent: 3842384 (1974-07-01), Murata et al.
A Measurement Technique for L-F, R. Murthy et al., J. Phys: Sci Instum., vol. 12, 1979.
Simple Spectrum Analyzer for Low and Infra low Frequencies, V. M. Zhestovski et al, Instum & Exp Tech., No. 2, Mar. 1970.
A Low Frequency Spectrum Analyzer, Hewlett & Packard J. (U.S.A) vol. 23, No. 1, Sep. 1971.

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