Production of images
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United States of America Patent
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Feb 16, 1993
Issued Date -
N/A
app pub date -
Jul 18, 1988
filing date -
Jun 20, 1985
priority date (Note) -
Expired
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Importance
Abstract
For reducing speckle in echo signals derived from reflections of pulsed coherent waves, the echo signals are subjected to amplitude and phase/frequency demodulation and the resultant amplitude and phase/frequency data are multiplied to generate an image signal. Selective control of the multiplication process may be provided in accordance with signal amplitude and/or signal-to-noise ratio.
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