Digital synchronous detector sampling

Boots – shoes – and leggings

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364576, 364574, 25023114, 250237G, G06G 712

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active

049949918

ABSTRACT:
Disclosed is an apparatus and method for the measurement of weak signals in an output device, including weak signals in the presence of obscuring noise, by pseudorandom sampling of a repetitive alternating potential waveform and digitally extracting the fundamental hormonic to reconstruct an accurate transfer function for the device being measured.

REFERENCES:
patent: 4658132 (1987-04-01), Nishiura et al.
patent: 4658133 (1987-04-01), Nishiura
patent: 4713782 (1987-12-01), Blackham
patent: 4786861 (1988-11-01), Hulsing, II et al.
patent: 4807146 (1989-02-01), Goodrich et al.
E. N. Kotlikov et al., "Digital Synchronous Detector," Instruments and Experimental Techniques, vol. 23, No. 3, May-Jun. 1980, pp. 683-685.
"Explore the Lock-In Amplifier," Princeton Applied Research, Technical Note 15; copyright 1976.
J. R. Ragazzin and G. F. Franklin, "Sampled-Data Control Systems," McGraw HillBook Co., Inc., 1958, pp. 12-28.
C. C. Chen and C. S. Gardner, "Performance of PLL Synchronized Optical PPM Communication Systems," IEEE Trans. Commun., vol. COM-34, No. 10, Oct. 1986, pp. 988-994.
W. A. Gardner, "The Role of Spectral Correlation in Design and Performance Analysis of Synchronizers," IEEE Trans. Commun., vol. COM-34, No. 11, Nov. 1986, pp. 1089-1095.
G. W. Small and K. E. Leslie, "Synthesizing Signal Generator for Use with Lock-In Amplifiers in Audiofrequency Measurements," IEEE TRans. Instrument & Measurement , vol. IM-35, No. 3, Sep. 1986, pp. 249-255.
C. N. Georghiades, "Joint Baud and Frame Synchronization in Direct Detection Optical Communications," IEEE Trans. Acoust., Speech, Signal Processing, vol. COM-33, No. 4, Dec. 1982, pp. 937-942.
R. J. Marks, II, "Restoration of Continuously Sampled Band-Limited Signals from Aliased Data," IEEE Trans. Acoust., Speech, Signal Processing, vol. ASSP-30, No. 5, Dec. 1982, pp. 937-982.
C. M. Radar, "Recovery of Undersampled Periodic Waveforms," IEEE Trans. Acoust., Speech, Signal Processing, vol. ASSP-25, No. 3, Jun. 1977, pp. 242-249.
M. H. Hayes, J. S. Lim and A. V. Oppenheim, "Signal Reconstruction from Phase or Magnitude," IEEE Trans. Acoust., Speech, Signal Processing, vol. ASSP-28, No. 6, Dec. 1980, pp 672-680.
S. H. Nawab, T. F. Quatieri and J. S. Lim, "Signal Reconstruction from Short-Time Fourier Transforms Magnitude," IEEE Trans. Acoust., Speech, Signal Processing, vol, ASSP-31, No. 4, Aug. 1983, pp. 986-998.
R. W. Schafer and L. R. Rabiner, "A Digital Signal Processing Approach to Interpolation", Proc. IEEE, vol. 61, No. 6, Jun. 1973, p. 692-702.
R. J. Marks, II, "Differintegral Interpolation from a Bandlimited Signal's Samples," IEEE Trans. Acoust., Speech, Signal Processing, vol. ASSP-29, No. 4, Aug. 1981, pp. 872-876.

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