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PLL Based Detector for Coherent Beacon Receivers Using DSP Techniques

Rocha, A. ; Sousa, R. ; Pires, A. ; Martins, R.

PLL Based Detector for Coherent Beacon Receivers Using DSP Techniques, Proc IEEE International Symp. on Control, Communications and Signal Processing - ISCCSP, St. Julians, Malta, Vol. Submitted, pp. 15761579 - 1579, March, 2008.

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Abstract
Amplitude and relative phase measurement of noisy CW signals require appropriate techniques, such as coherent detection, for maximum dynamic range and accuracy. We hereby describe a two channel system, developed for satellite microwave propagation beacon experiments, that comprises a user developed card, a DSP kit and dedicated software. The solution, that uses digital signal processing programmable chips and a DSP software managed PLL offers considerable advantages over a classical analogue system. Several prototype experimental results, tested with realistic signals, are presented and discussed.