ID 原文 译文
13134 通过与有关实测数据比对，证明了方法的合理性。 By comparing with the concerned real data, the rationality of the method is proved.
13135 仿真分析可知，利用高频率雷达探测临近空间高超声速飞行器将更容易得到连续的航迹，产生雷达“黑障”的时间更短。 The simulaton analysis shows that it is easier to obtain continuous tracks and shorter time to generate radarm"blackout" by using high-frequency radar to detect near space hypersonic vehicle.
13136 设计了一款宽波束的圆极化天线单元以及1C4的天线阵列!实现了一维的宽角圆极化扫描。 A wide-beam circularly polarzed antenna unit and a 1X4 antenna array are designed to realize one dimensional widvangle circular polarization scanning in th s paper.
13137 天线单元由单层的辐射贴片和介质基片集成波导(substrate integrated waveguide, SIW )背腔构成，通过在 辐射贴片上切角微扰和开U型槽实现右旋圆极化，并利用SIW背腔缝隙展宽波束。 Antenna unit consists of a single layer radiating patch and a delectric substrate integrated waveguide (SIW) back cavity. The righthanded circular polarization is acheved by chamfering and cutting the U-groove on the radiating patch, andbroaden the beamFs utlzed by the SIW back cavty gap.
13138 同时利用SIW背腔减 小阵列单元间的互耦，实现宽角圆极化扫描。 At the same time, the SIW back cavity is used to reduce the mutual coupling between the array elements to realize wide-angle circular polarzation scanning. A circular polarizaton scan characterstc that acheves a good wde angle range.
13139 仿真与测试结果表明，天线阵列实现了扫描角为ー53。〜57。!3 dB波束宽度覆盖范围为ー76。〜79。，在主波束扫描覆盖范围内轴比(axial rati。,AR)均小于3 dB，且在扫描范围内增益变化平稳，可实现良好的宽角范围的圆极化扫描特性 The simulaton and test results show that the antenna array has a scan angle from -53° to 57。,3 dB beam width coverage from -76\to 79\, an axial ratio (AR%of less than3dB in the main beamscan range, and a smooth gain variation over the scan range. A circular polarization scan characteristic that achieves a good wide angle range.
13140 短波电离层传播损耗的计算对电离层基础研究与短波通信、天波超视距雷达等应用有重要意义，以往主要采用半经验模型。 The calculations of onosphere propagation loss have important meaning for fundamental research of onosphere and applications of HF communication or over-the-horizon radar, which are usually adopted by semi-empirical model.
13141 文中基于电磁波传播的抛物方程方法，实现对短波电离层传播损耗空间分布的数值计算，该方法可同时考虑电磁波传播的折射、反射、绕射和吸收等效应。 The parabolc equation methods for electromagnets wave propagaton are proposed to numercally calculate the space distribution of path loss affected by ionosphere at HF. The numerical techniques can consider effects of refraction, reflection, diffraction and absorption of ionospheric propagation simultaneously.
13142 根据电子浓度剖面数据，仿真计算了不同频点和天线波束宽度情况下的电离层传播损耗，从折射效应引起的传播模式、反射点高度、地面落区位置方面，与射线描迹结果进行对比，两者具有一致性。 Propagation loss is simulated under different frequency and beam width using a proflle of electron concentraton. The propagaton mode, reflecton height and situation are compared with the resuts from ray tracing, demonstrating that they are consistent with each other.
13143 此外，进ー步仿真分析了电离层的吸收效应。 Absorption effects for ionosphere are simulated and used to analyze by the numerical method.