A new quadrature sampling and processing approach
Liu, H.; Ghafoor, A.; Stockmann, P.H.
Aerospace and Electronic Systems, IEEE Transactions on
Volume 25, Issue 5, Sep 1989 Page(s):733 - 748
Digital Object Identifier   10.1109/7.42090
Summary:A quadrature sampling and array signal processing technique that differs from earlier approaches in that is processes the data before the Hilbert transformation is presented. A fast Fourier transformation (FFT) technique that performs the discrete Fourier transformation (DFT) on the sampled data directly without Hilbert transformation is proposed for frequency-domain signal processing. For array signal processing, the proposed approach does not perform Hilbert transformation prior to signal combining. It features high processing speed, low distortion, and hardware simplicity. Error analyses, performance evaluation, and computer simulation results are included

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