ID 原文 译文
13184 时频分析结果揭示了在纳秒尺度上，先导宽带VHF辐射“倾斜状”的时频分布特征中高频辐射先于低频成分到达，典型的倾斜斜率约为+3 MHz/ns。 The results of time-frequency analysis reveal that the time-frequency distribution of broadband VHF radiation is at nanosecond scale. The high-frequency radiation arrives before the low-frequency components, and the typical tllt slope is about -3 MHz/ns.
13185 提出的时频定位算法可以计算信号不同频率成分的时延，便于去除干扰点影响。 The proposed time-frequency localization algorithm can calculate the delay of different frequency components of the signal, and faciliitate the removal of the influence of the interference pont.
13186 利用本算法对ー次人工引雷直窜先导进行了定位分析，通过舍去调频(frequency modulation，FM)干扰，能够清晰描绘先导VHF辐射源的发展过程，定位结果与高速摄像图像吻合，进ー步丰富了短基线VHF的定位方式。 This algorithm is used to locate and analyze the dart leader in an artificially triggered lighting. The development process of the VHF radaton source can be clearly depcted by deducting the FM (FM) interference. The mappng result is consistent with the high-speed camera image, which further enrchng the positisionng of VHF location.
13187 将频域时间反转(time reversal, TR)聚焦技术应用于雷电辐射源探测定位，介绍了雷电辐射源探测系统的基本组成和TR定位算法，讨论了定位精度的影响因素，给出了典型应用实例。 A time reversal in frequency domam method is applied to lightning radiation sources positicning. The basic components of lightning location systems and time reversal technique are introduced. The influencing factors of positioning accuracy are discussed and typical examples are described.
13188 通过与传统的方法进行对比，发现该方法具有较好的鲁棒性，无需提取波形的到达时刻等信息，可直接利用检测波形的反向传播进行自动聚焦定位，并具有多辐射源同时定位的潜力。 Compared with the tradtonal lghtn ng location methods, the time reversal method has better robustness and can directly use the back propagation of the detected waveform for automatic focus positioning without extracting the arriva l time of the waveform. Furthermore, it has the potental of simultaneous positioning for multple radiation sources.
13189 针对集成电路(integrate circuit, IC)在复杂环境中的电磁抗扰度漂移问题，研究了环境热应力对典型数字逻辑集成电路通用输入/输出(general purpose input output, GPIO)端口电磁抗扰度的影响。 Due to the electromagnetic immunty drift problems of integrated circuit in complex electrc- magnetic environment, we study the influence of ambient thermal stress on the GPIO electromagnetic immunity of typical digital logic circuit.
13190 分析典型FPGA GPIO电气拓扑结构及电磁+热耦合应カ对其内部金属氧化物(metal+oxide+semiconductor, MOS)敏感器件的干扰机理，基于集成电路电磁传导抗扰度模型(integrate circuit immunity model-conducted immunity, ICIM-CI)，将环境热应力干扰因素引入GPIO电磁抗扰预测分析中，建立传导抗扰度+热效应仿真预测模型(ICIM-CI-temperature, ICIM-CI-))，设计基于电磁干扰直接功率注入(direct power mjec- tion, DPI)与热应カ耦合的抗扰度测试平台，仿真与测试得到了对应的抗扰度阈值变化曲线。 The typical FPGA GPIO electrical topology structure and the disturbance mechanism of electromagnetic-thermal coupling stress on internal MOS devices is analyzed. And the envronmental thermal stress interference factor is introduced into the prediction and analyss of electromagnets immunty and the conducted immunity-thermal effect model ICIM-CI-T is bullt which is based on the integrated circuit electromagnetic conducted immunity model ICIM-CI. Then, the immunity test platform based on direct power injecton of electromagnetic interference coupled with thermal stress is designed and the immunity threshold curve of simulation and measurement is obtained.
13191 结果表明，在 10 MHz〜1GHz频率范围内，模型仿真与测试结果一致性好。 The result show that the simulations are consistent well with the measurements within the frequency range of 10 MHz—1 GHz.
13192 在环境热应カ从20 g变化到100 g过程中，当频率小于!00 MHz时,GPIO电磁抗扰度基本不受热应力影响。 During the ambient thermal stress is changed from 20 g to 100 °C ! the thermal stress seems to have no effect on the immunity of GPIO when the frequency is less than 200MHz.
13193 在200〜700MHz频段内，GPIO电磁抗 扰度随着热应力干扰的增加而降低，其中300MHz和600 MHz频点处的抗扰度阈值下降4 dBmw，也是该 FPGA需要重点防护的频段。 And it decreases with the increase of thermal stress interference within the frequency range of 200 MHz+700 MHz, especially, the immunity threshold decreases by 4 dBmw at 300 MHz and 600 MHz.