發(fā)布時間：2018-05-23 15:22

  本文選題：混響室 + 相關系數��； 參考：《強激光與粒子束》2017年12期

【摘要】：針對在混響室條件下進行輻射敏感度測試時電磁環(huán)境場強難以度量的問題,分析了混響室內電場強度的統計特性,理論推導了有損混響室內場強空間相關系數表達式,并通過仿真分析驗證了表達式的正確性。根據表達式得出有損混響室內相對距離大于半波長的兩點間場強相互獨立的結論,并由此推斷出,混響室內環(huán)境場強測試位置與受試設備(EUT)距離應大于0.5倍波長,且應以此作為測量位置選取準則。采用仿真計算與實驗驗證相結合的方法分析了相對誤差隨測試點與EUT間相對距離的變化規(guī)律,對該準則進行了驗證,結果表明,當測試點與EUT相對距離大于0.5時,相對誤差能夠保證在±1.5dB以內,可應用于實際混響室環(huán)境場強測試。
[Abstract]:In view of the problem that the electromagnetic environment field strength is difficult to measure in the radiation sensitivity test under the condition of reverberation chamber, the statistical characteristics of the electric field intensity in the reverberation chamber are analyzed. The expression of the correlation coefficient of the field intensity in the damaged reverberation chamber is derived. The correctness of the expression is verified by the simulation analysis. The loss reverberation is obtained according to the expression. The relative distance between the relative distance of the indoor relative distance is greater than the half wavelength, and it is concluded that the distance between the field strength test position of the reverberant indoor environment and the EUT should be more than 0.5 times the wavelength, and should be taken as the selection criterion of the measurement position. The relative distance between the pilot and the EUT is verified. The results show that the relative error can be guaranteed to be within + 1.5dB when the relative distance between the test point and the EUT is more than 0.5, and it can be applied to the actual ambient field strength test of the actual reverberation chamber.
【作者單位】： 陸軍工程大學石家莊校區(qū)電磁環(huán)境效應國家級重點實驗室;白城兵器試驗中心;
【基金】：國家自然科學基金項目(61372040)
【分類號】：TM937
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本文編號：1925316