纳秒脉冲检测方法与技术的研究进展
Developments in Nanosecond Pulse Detection Methods and Technology
摘要：
探测UHE中微子的一个有前途的方法是月球切伦科夫技术，它利用地球上的射电望远镜来探测UHE中微子在月球外层相互作用时发出的相干切伦科夫辐射。LUNASKA项目旨在克服过去实验的技术限制，利用下一代射电望远镜寻找这些难以捉摸的粒子。为了利用来自潜在的数千个天线的宽带数据，需要信号处理技术的进步。在这里，我们描述了在这一领域的最新发展和他们的应用在寻找UHE中微子，从初步实验使用的第一阶段升级到澳大利亚望远镜紧凑阵列，充分利用完成平方公里阵列的可能性。我们还探索了一种新的实时技术，用于表征电离层脉冲色散，专门测量电离层电子含量，是视线到月球。
英文摘要：
A promising method for the detection of UHE neutrinos is the Lunar Cherenkov technique, which utilises Earth-based radio telescopes to detect the coherent Cherenkov radiation emitted when a UHE neutrino interacts in the outer layers of the Moon. The LUNASKA project aims to overcome the technological limitations of past experiments to utilise the next generation of radio telescopes in the search for these elusive particles. To take advantage of broad-bandwidth data from potentially thousands of antennas requires advances in signal processing technology. Here we describe recent developments in this field and their application in the search for UHE neutrinos, from a preliminary experiment using the first stage of an upgrade to the Australia Telescope Compact Array, to possibilities for fully utilising the completed Square Kilometre Array. We also explore a new real time technique for characterising ionospheric pulse dispersion which specifically measures ionospheric electron content that is line of sight to the moon.
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