Transform domain filtering narrowband interference suppression method and device

The invention discloses a transform domain filtering narrowband interference suppression method and device, and the method comprises the steps: windowing an input signal, and obtaining a windowed time domain signal; performing time-frequency transformation on the windowed time-domain signal to obtai...

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Hauptverfasser:	ZHANG FENGWEN, DING LIANCHENG, YUAN JUNBAO, ZHANG LIPING, WEI SIYANG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ANALOGOUS ARRANGEMENTS USING OTHER WAVES DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASURING PHYSICS RADIO DIRECTION-FINDING RADIO NAVIGATION TESTING
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Beschreibung
Zusammenfassung:	The invention discloses a transform domain filtering narrowband interference suppression method and device, and the method comprises the steps: windowing an input signal, and obtaining a windowed time domain signal; performing time-frequency transformation on the windowed time-domain signal to obtain a frequency-domain signal; performing interference suppression on the frequency domain signal, and performing time-frequency inverse transformation on an obtained interference suppression result to obtain an output signal; the interference suppression comprises the following steps: judging whether an absolute value of a frequency domain signal reaches a preset detection threshold or not; and if the absolute value of the frequency domain signal reaches a preset detection threshold, the value of the frequency domain signal at the point is a preset value. According to the technical scheme provided by the invention, the point of which the absolute value of the frequency domain signal reaches the preset detection thre