本文關(guān)鍵詞： 電暈放電 輻射場 寬帶測試 窄帶測試 遠(yuǎn)距離探測　出處：《電波科學(xué)學(xué)報(bào)》2014年05期 　論文類型：期刊論文

【摘要】：利用電磁輻射場實(shí)現(xiàn)對(duì)電暈放電的探測,多采用寬帶測試,帶內(nèi)干擾多、信噪比低、測試距離近.為此,提出了基于窄帶測試的電暈放電遠(yuǎn)距離探測方法,通過分析電暈?zāi)芰糠植技氨尘案蓴_,合理選擇窄帶測試頻段,實(shí)現(xiàn)對(duì)電暈放電目標(biāo)的遠(yuǎn)距離探測.測試結(jié)果表明:較之寬帶測試,窄帶測試信噪比較高、抗干擾能力強(qiáng)、測試距離遠(yuǎn);120~315 MHz頻段內(nèi)的電暈放電信號(hào),背景干擾少,信噪比不低于4dB,適宜用作電暈放電信號(hào)遠(yuǎn)距離測試的特征窄帶頻段.提出的窄帶測試方法具有普遍性,結(jié)合現(xiàn)代檢測技術(shù)和信號(hào)處理技術(shù)將會(huì)大大增加測試距離,對(duì)豐富現(xiàn)有電暈放電遠(yuǎn)距離探測手段具有重要意義.
[Abstract]:Using electromagnetic radiation field to detect corona discharge, wideband measurement is used, intra-band interference is more, SNR is low, and test distance is close. Therefore, a method of long range detection of corona discharge based on narrowband measurement is proposed. By analyzing the corona energy distribution and background interference, the narrow band test frequency band is reasonably selected to realize the remote detection of corona discharge target. The test results show that the SNR of narrowband test is higher than that of wideband test, and the anti-jamming ability of narrowband test is stronger than that of wideband test. The corona discharge signal with less background interference and a signal-to-noise ratio (SNR) of not less than 4dBis suitable for the long range measurement of corona discharge signals in the corona discharge signal range of 120,315 MHz. The proposed narrowband measurement method is universal, and is suitable for long range measurement of corona discharge signals. The combination of modern detection technology and signal processing technology will greatly increase the test distance, which is of great significance to enrich the existing corona discharge remote detection methods.
【作者單位】： 軍械工程學(xué)院靜電與電磁防護(hù)研究所;
【基金】：國家自然科學(xué)基金(61172035)
【分類號(hào)】：TM851

【共引文獻(xiàn)】

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