Cancellation of TV Interference
Cancellation of TV Interference
复制标题
取消电视干扰
DOI：
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发表时间：
2002
期刊：
影响因子：
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通讯作者：
D. Roshi
中科院分区：
文献类型：
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作者：
D. Roshi
射频干扰（RFI）对射电天文学研究的影响越来越大。几年前，开始了积极的研究，以调查在存在干扰的情况下使用RFI缓解技术进行观测的可能性。本文介绍了抑制干扰的技术，由于电视传输。采用电视信号的无噪声建模和自适应滤波相结合的方法来抑制干扰。该技术对电视同步信号的RFI抑制的实测下限约为12 dB。我们还提出了一种简单但有趣的技术来抑制双边带调幅干扰。
Radio frequency interference (RFI) is increasingly affecting radio astronomy research. A few years ago, active research to investigate the possibility of observing in the presence of interference using RFI mitigation techniques was initiated. This paper presents techniques to suppress interference due to TV transmission. A combination of noise-free modeling of the TV signals and adaptive filtering is used for suppressing the interference. The measured lower limit on RFI rejection using this technique on TV synchronization signal is about 12 dB. We also present a simple, but interesting, technique to suppress double sideband amplitude modulated interference.