论文标题
通过Askaryan效应，使用高能量宇宙射线在无气体上的地下的被动双雷达探针
Passive bistatic radar probes of the subsurface on airless bodies using high energy cosmic rays via the Askaryan effect
论文作者
论文摘要
我们提出了一种新技术，可以在无空的行星体上执行被动地下雷达探针。该技术使用当高能宇宙射线影响人体表面时产生的自然无线电冲动。就像传统的雷达声音一样，每个宇宙射线冲击的向下梁无线电发射将反映在地下介电对比度，并将其传播回表面以进行检测。在基本物理过程（Askaryan效应）产生这种无线电的效果之后，我们将此技术称为Askaryan雷达。该技术可以从轨道卫星或地表降落器中进行，但是由于无线电发射是在表面下产生的，因此Askaryan雷达可以完全绕过表面混乱和反向散射的影响，通常与表面渗透雷达相关。我们介绍了Askaryan地下雷达的背景理论，并显示了有限差分时间域（FDTD）和Monte Carlo模拟的结果，证实该技术是一种有前途的行星雷达发声方法，可为现实的行星科学应用产生可检测的信号。
We present a new technique to perform passive bistatic subsurface radar probes on airless planetary bodies. This technique uses the naturally occurring radio impulses generated when high-energy cosmic rays impact the body's surface. As in traditional radar sounding, the downward-beamed radio emission from each individual cosmic ray impact will reflect off subsurface dielectric contrasts and propagate back up to the surface to be detected. We refer to this technique as Askaryan radar after the fundamental physics process, the Askaryan effect, that produces this radio emission. This technique can be performed from an orbiting satellite, or from a surface lander, but since the radio emission is generated beneath the surface, an Askaryan radar can completely bypass the effects of surface clutter and backscatter typically associated with surface-penetrating radar. We present the background theory of Askaryan subsurface radar and show results from both finite-difference time-domain (FDTD) and Monte Carlo simulations that confirm that this technique is a promising planetary radar sounding method, producing detectable signals for realistic planetary science applications.
