论文标题
用抛物线方程方法建模冰中无线电传播
Modeling in-ice radio propagation with parabolic equation methods
论文作者
论文摘要
我们研究了抛物线方程（PE）方法在极性冰中求解无线电波的传播。与全场解决方案（例如有限差分时间域（FDTD）方法）相比，PE方法为麦克斯韦方程提供了近似的解决方案，但与简单的几何几何射线追踪（RT）方法相比，这些方法是模拟中冰的冰上无线电诱导的Cascades的现状的更完整的传播模型。 PE比FDTD方法更有效，并且比RT方法更灵活，允许包含衍射效应，并且在无法用几何方法建模的区域中传播的建模。我们提出了一个适合冰上案例的新PE近似。我们得出的结论是，当前的射线追踪方法可能对它们的冰性能过于简单，并且它们的持续使用可能高估了对冰中中微子检测实验的实验敏感性。我们讨论对当前的In-In-In-Askaryan型检测器以及即将到来的Radar Echo望远镜的含义。这些结果最相关的两个实验家族。我们建议将PE方法进一步研究用于ICE In-In-In-In-Radio应用。
We investigate the use of parabolic equation (PE) methods for solving radio-wave propagation in polar ice. PE methods provide an approximate solution to Maxwell's equations, in contrast to full-field solutions such as finite-difference-time-domain (FDTD) methods, yet provide a more complete model of propagation than simple geometric ray-tracing (RT) methods that are the current state of the art for simulating in-ice radio detection of neutrino-induced cascades. PE are more computationally efficient than FDTD methods, and more flexible than RT methods, allowing for the inclusion of diffractive effects, and modeling of propagation in regions that cannot be modeled with geometric methods. We present a new PE approximation suited to the in-ice case. We conclude that current ray-tracing methods may be too simplistic in their treatment of ice properties, and their continued use could overestimate experimental sensitivity for in-ice neutrino detection experiments. We discuss the implications for current in-ice Askaryan-type detectors and for the upcoming Radar Echo Telescope; two families of experiments for which these results are most relevant. We suggest that PE methods be investigated further for in-ice radio applications.
