About: Pulse-Doppler signal processing     Goto   Sponge   NotDistinct   Permalink

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Pulse-Doppler signal processing is a radar and CEUS performance enhancement strategy that allows small high-speed objects to be detected in close proximity to large slow moving objects. Detection improvements on the order of 1,000,000:1 are common. Small fast moving objects can be identified close to terrain, near the sea surface, and inside storms. It is also used to measure blood flow in Doppler ultrasonography.

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  • Traitement des données Doppler pulsées (fr)
  • Pulse-Doppler signal processing (en)
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  • Le traitement des données Doppler pulsées est la méthode d'évaluation des vitesses et de la réflectivité au moyen d'un radar Doppler pulsé. Elle consiste en un échantillonnage d'impulsions successivement émises puis retournées au radar par les cibles et desquelles le processeur extrait une séquence de valeurs appelées I et Q. L'analyse de Fourier de ces données permet d'extraire les informations voulues. (fr)
  • Pulse-Doppler signal processing is a radar and CEUS performance enhancement strategy that allows small high-speed objects to be detected in close proximity to large slow moving objects. Detection improvements on the order of 1,000,000:1 are common. Small fast moving objects can be identified close to terrain, near the sea surface, and inside storms. It is also used to measure blood flow in Doppler ultrasonography. (en)
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  • http://commons.wikimedia.org/wiki/Special:FilePath/Pulse-doppler_ambiguity_zones.png
  • http://commons.wikimedia.org/wiki/Special:FilePath/Pulse_doppler_samples.png
  • http://commons.wikimedia.org/wiki/Special:FilePath/Pulse_doppler_signal_processing.png
  • http://commons.wikimedia.org/wiki/Special:FilePath/Iq_samples.png
  • http://commons.wikimedia.org/wiki/Special:FilePath/Constant_false_alarm_rate.png
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  • Pulse-Doppler signal processing is a radar and CEUS performance enhancement strategy that allows small high-speed objects to be detected in close proximity to large slow moving objects. Detection improvements on the order of 1,000,000:1 are common. Small fast moving objects can be identified close to terrain, near the sea surface, and inside storms. This signal processing strategy is used in pulse-Doppler radar and multi-mode radar, which can then be pointed into regions containing a large number of slow-moving reflectors without overwhelming computer software and operators. Other signal processing strategies, like moving target indication, are more appropriate for benign clear blue sky environments. It is also used to measure blood flow in Doppler ultrasonography. (en)
  • Le traitement des données Doppler pulsées est la méthode d'évaluation des vitesses et de la réflectivité au moyen d'un radar Doppler pulsé. Elle consiste en un échantillonnage d'impulsions successivement émises puis retournées au radar par les cibles et desquelles le processeur extrait une séquence de valeurs appelées I et Q. L'analyse de Fourier de ces données permet d'extraire les informations voulues. (fr)
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