基于平面波疊加的混響室場環(huán)境模擬與測試仿真
發(fā)布時間：2019-05-21 08:05
【摘要】：針對電磁混響室難以仿真的問題,分析了平面波疊加模擬混響室場分布的合理性,根據(jù)理想混響室特征給出了疊加平面波的幅值、極化角度等參數(shù)設(shè)置的細節(jié)信息。在此基礎(chǔ)上,利用Matlab調(diào)用FEKO的混合編程方法進行了場環(huán)境模擬,檢驗結(jié)果表明,疊加場環(huán)境特性與混響室場分布特性保持了一致。利用該方法,對某開縫矩形腔體的屏蔽效能進行了仿真測試,并取得了與實測數(shù)據(jù)相符的結(jié)果,其屏蔽效能約為15 d B。該方法有效避免了對混響室的精確建模,大大降低了混響室條件下相關(guān)測試仿真的難度與計算量,同時為深入分析混響室場環(huán)境特性提供了一條捷徑。
[Abstract]:In order to solve the problem that it is difficult to simulate the electromagnetic reverberation chamber, the rationality of the field distribution of the plane wave superposition simulation reverberation chamber is analyzed, and the details of the parameters such as the amplitude and polarization angle of the superimposed plane wave are given according to the characteristics of the ideal reverberation chamber. On this basis, the field environment simulation is carried out by using the mixed programming method of Matlab calling FEKO. The test results show that the environmental characteristics of the superimposed field are consistent with the field distribution characteristics of the reverberation chamber. By using this method, the shielding effectiveness of a slit rectangular cavity is simulated and tested, and the results are in good agreement with the measured data. The shielding effectiveness is about 15 dB. This method effectively avoids the accurate modeling of reverberation chamber, greatly reduces the difficulty and computation of related test simulation under the condition of reverberation chamber, and provides a shortcut for further analysis of the environmental characteristics of reverberation chamber field.
【作者單位】： 西北核技術(shù)研究所強脈沖輻射環(huán)境模擬與效應(yīng)國家重點實驗室;北京跟蹤與通信技術(shù)研究所;軍械工程學(xué)院靜電與電磁防護研究所;
【基金】：國家自然科學(xué)基金(51107147;51177174)~~
【分類號】：TN03
[Abstract]:In order to solve the problem that it is difficult to simulate the electromagnetic reverberation chamber, the rationality of the field distribution of the plane wave superposition simulation reverberation chamber is analyzed, and the details of the parameters such as the amplitude and polarization angle of the superimposed plane wave are given according to the characteristics of the ideal reverberation chamber. On this basis, the field environment simulation is carried out by using the mixed programming method of Matlab calling FEKO. The test results show that the environmental characteristics of the superimposed field are consistent with the field distribution characteristics of the reverberation chamber. By using this method, the shielding effectiveness of a slit rectangular cavity is simulated and tested, and the results are in good agreement with the measured data. The shielding effectiveness is about 15 dB. This method effectively avoids the accurate modeling of reverberation chamber, greatly reduces the difficulty and computation of related test simulation under the condition of reverberation chamber, and provides a shortcut for further analysis of the environmental characteristics of reverberation chamber field.
【作者單位】： 西北核技術(shù)研究所強脈沖輻射環(huán)境模擬與效應(yīng)國家重點實驗室;北京跟蹤與通信技術(shù)研究所;軍械工程學(xué)院靜電與電磁防護研究所;
【基金】：國家自然科學(xué)基金(51107147;51177174)~~
【分類號】：TN03
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