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An oscilloscope display is described that can be used for signal-to-noise enhancement, presentation of spectral data in compact form, and X-Y data plotting. The display also functions as an optical signal averager and is useful in the detection of signals whose frequencies are not known a priori and signals whose frequencies drift in time. Results obtained in simulation tests and in experimental research on plasma waves and instabilities are described.
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Lashinsky et al. (1971) studied this question.
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