Narrowband Interference Suppression Method Based on Transform Domain Filtering
A technology of narrowband interference and transformation domain, applied in the field of narrowband interference suppression, can solve the problems of difficult identification and elimination of interference, and achieve the effect of improving capabilities and reducing resource consumption
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[0024] The present invention will be further described below in conjunction with the accompanying drawings.
[0025] The narrowband interference suppression method based on transform domain filtering, the above method converts the sampled signal to the frequency domain through the transform domain, and analyzes the composition characteristics of the spectrum while identifying the narrowband interference, then removes the narrowband interference, and finally removes the interfered signal Returning to the time domain is characterized in that it comprises the following steps:
[0026] (1) Two channels of original sampling low-IF frequency signals in the time domain a sig signal and b sig After normalization, the signals are divided into punctual branch signals and delayed branch signals: the first punctual branch signal a, the second punctual branch signal b, and the first delayed branch signal a delay and the second delayed branch signal b delay ;
[0027] (2) N(N=2) is perf...
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