在ATCA的LUNASKA月球切伦科夫观测的实验装置
Experimental set-up of the LUNASKA lunar Cherenkov observations at the ATCA
摘要：
这篇文章描述了由LUNASKA项目在澳大利亚望远镜紧凑阵列（ATCA）实施的实验装置，使射电望远镜能够用于搜索来自月球UHE粒子相互作用的相干切伦科夫辐射脉冲，具有前所未有的带宽，因此灵敏度。我们的专用硬件包括模拟去色散滤波器，用于在我们的宽带宽（600 MHz）上对地球电离层中~纳秒脉冲的预期色散进行相干校正，以及基于FPGA的数字化板，运行在2.048 GHz，用于脉冲检测。触发算法进行了描述，因为是地面RFI和真正的月球脉冲之间的区别所使用的方法。我们还概述了下一阶段的硬件开发，预计将用于我们的2010年的观测。
英文摘要：
This contribution describes the experimental set-up implemented by the LUNASKA project at the Australia Telescope Compact Array (ATCA) to enable the radio-telescope to be used to search for pulses of coherent Cherenkov radiation from UHE particle interactions in the Moon with an unprecedented bandwidth, and hence sensitivity. Our specialised hardware included analogue de-dispersion filters to coherently correct for the dispersion expected of a ~nanosecond pulse in the Earth's ionosphere over our wide (600 MHz) bandwidth, and FPGA-based digitising boards running at 2.048 GHz for pulse detection. The trigger algorithm is described, as are the methods used discriminate between terrestrial RFI and true lunar pulses. We also outline the next stage of hardware development expected to be used in our 2010 observations.
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