摘要
RTCA/DO-160G射频敏感度测试已广泛用于民用航空机载设备的可靠性检定中,然而,目前国内外对基于DO-160G的北斗机载接收机射频敏感度测试的理论分析与实际测试并不多见,对RTCA/DO-160G射频敏感度测试的研究旨在为民用北斗机载接收机的射频敏感度测试提供理论参考和实践依据.文中首先导出了传导敏感度及辐射敏感度校准的理论模型并验证了其有效性,导出模型表明选择满足标准要求的注入探头比高功率放大器的选择更重要,同时得到了远场条件下天线输入功率的估算方法.其次提出了基于敏感概率的半电波暗室与混响室辐射敏感度测试的等效模型,理论及实验结果表明该模型能够较好地预测两种测试方法的差异.最后根据所需的测试信号建立了相应的敏感度评估模型,实际得到的辐射敏感度测试下连续波和脉冲调制阈值最小值为5 V/m、40 V/m,表明接收机对脉冲干扰的耐受性显著高于连续波.
The radio frequency susceptibility testing method of RTCA/DO-160G section 20 has been widely utilized to verify the reliability of airborne equipments in civil aviation.However,there are only a few of theory analysis and practical test of Beidou airborne equipment based on the procedure of radio frequency susceptibility test originated from RTCA/DO-160G,the research of radio frequency susceptibility test stemmed from RTCA/DO-160G is aiming at provide theoretical reference and practical bases for civil Beidou airborne receiver.Firstly,a theoretical model of calibration for conducted susceptibility and radiated susceptibility is derived and validated its effectiveness,the derived theoretical model indicate that choosing a suitable injection probe that meets the requirements of standard is much more important than the choose of a high power amplifier,a method for estimating the input power of antenna is also obtained under far field zone.Secondly,an equivalence model based on the susceptibility probability is formulated between the anechoic chamber and reverberation chamber method of radiated susceptibility test,the theory and experimental results show that the model can predict the difference between these two test methods well.Finally,a susceptibility evaluation model is constructed in terms of the needed test signal.The practical minimum radiated susceptibility threshold for continuous wave and pulse modulated signal are 5 V/m and 40 V/m,which indicates the receiver shows a better endurance to pulse interference than continuous wave.
作者
刘瑞华
商鹏
席泽谱
LIU Ruihua;SHANG Peng;XI Zepu(College of Electronic Information and Automation,Civil Aviation University of China,Tianjin 300300,China;Key Laboratory of Civil Aircraft Airworthiness Technology,CAAC,Tianjin 300300,China)
出处
《电波科学学报》
EI
CSCD
北大核心
2020年第5期672-680,共9页
Chinese Journal of Radio Science
基金
国家重点研发计划“广域航空安全监视技术及应用”子课题“北斗机载设备检测与适航评估技术”(2016YFB0502402)。
关键词
电磁兼容
传导敏感度
辐射敏感度
敏感度阈值
等效性分析
electromagnetic compatibility
conducted susceptibility
radiated susceptibility
susceptibility threshold
equivalence analysis
作者简介
刘瑞华(1965-),男,中国民航大学电子信息与自动化学院教授,博士,主要研究方向为卫星导航在民航中的应用、组合导航;联系人:商鹏(1991-),男,中国民航大学电子信息与自动化学院硕士研究生,主要研究方向为机载设备电磁兼容测试,E-mail:1498760420@qq.com;席泽谱(1994-),女,中国民航大学电子信息与自动化学院硕士研究生,主要研究方向为星基增强.
