| He Mi (何密),Nian Yongjian,Li Yongzhen,Xiao Shunping.[J].高技术通讯(英文),2013,19(3):309~314 |
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| Suppression to the cross-channel interference based on the short time Fourier transform |
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| DOI： |
| 中文关键词: |
| 英文关键词: simultaneous measurement, cross-channel interference suppression, the short time Fourier transform (STFT), the inverse short time Fourier transform (ISTFT) |
| 基金项目: |
| Author Name | Affiliation | | He Mi (何密) | | | Nian Yongjian | | | Li Yongzhen | | | Xiao Shunping | |
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| 中文摘要: |
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| 英文摘要: |
| A new cross-channel interference suppression method is proposed to decrease the cross-channel interference in beat signals based on the short time Fourier transform (STFT) and the inverse short time Fourier transform (ISTFT) when the dual-orthogonal polarimetric frequency-modulated continuous wave (FMCW) radar adopts the opposite-slope linear frequency modulation signal pair in the simultaneous measurement mode. The STFT is applied only on the signals in the cross-interference intervals in the four polarimetric channels to decrease the computation complexity. A mask matrix for suppressing the interference is constructed using the constant false alarm ratio (CFAR) detection on the spectrograms by the STFT. The simulative results show that the cross-channel interference is efficiently suppressed by the proposed method. The comparison between the proposed method and the rejection method verifies the improved performance of the proposed method. |
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