本文選題：時頻峰值 + 寬帶載波�。� 參考：《電網(wǎng)與清潔能源》2016年09期

【摘要】：電力線寬帶載波間存在大量干擾信號,采用傳統(tǒng)方法構(gòu)建的干擾模型,只能在高信噪比的情況下完成通信過程中的干擾過濾,有效信號被淹沒于干擾信號中,導致干擾效果差。提出一種基于改進時頻峰值濾波算法的電力線寬帶載波通信干擾過濾方法,利用頻率調(diào)制將電力線寬帶載波通信中的干擾信號編碼成解析信號的瞬時頻率,通過瞬時頻率估計對干擾信號進行識別;采用時頻峰值干擾過濾技術(shù),對電力線寬帶載波通信干擾信號中的原始信號進行恢復;在信號處理前,對時頻峰值濾波算法進行改進,獲取基本模式分量,依據(jù)干擾信號與有效信號的主導模態(tài),利用不同窗長進行處理,將得到的電力線寬帶載波通信信號應用于時頻峰值濾波技術(shù)中,實現(xiàn)干擾過濾。實驗結(jié)果表明,該方法干擾過濾效果好、過濾性能高、運行時間短,具有良好的實用性。
[Abstract]:There are a large number of interference signals between power line wideband carriers. The interference model constructed by the traditional method can only filter the interference in the communication process under the condition of high signal-to-noise ratio, and the effective signal is submerged in the interference signal, which results in poor jamming effect. A novel interference filtering method for power line wideband carrier communication based on improved time-frequency peak filtering algorithm is proposed. The interference signal in power line wideband carrier communication is encoded into the instantaneous frequency of analytic signal by frequency modulation. The interference signal is identified by instantaneous frequency estimation, the original signal of power line wideband carrier communication jamming signal is recovered by time-frequency peak interference filtering technology, and the time-frequency peak filter algorithm is improved before signal processing. The basic mode components are obtained and processed by using different window lengths according to the dominant modes of the interference signal and the effective signal. The power line wideband carrier communication signal is applied to the time-frequency peak filter technology to realize interference filtering. The experimental results show that this method has good interference and filtering effect, high filtration performance, short running time and good practicability.
【作者單位】： 國網(wǎng)河北省電力公司河北省張家口供電公司;
【基金】：教育部高校碩士點基金(201002240070)~~
【分類號】：TM73;TN913.6
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本文編號：1878952