用ETA Radio Telescope搜索瞬态脉冲
Searching for Transient Pulses with the ETA Radio Telescope
摘要：
基于阵列的直接采样射电望远镜具有不适合传统计算机和集群架构的计算和通信要求。必须在大量并行数据流之间严格保持同步，从A/D转换到波束成形等操作，再到数据集记录。支持多千兆位串行I/O的FPGA非常适合此应用。我们描述了一个最近建造的射电望远镜称为ETA具有全天观测能力，用于检测低频脉冲的瞬态事件，如伽马射线暴和原始黑洞爆炸。来自24个偶极天线的信号由28个商用FPGA板和4台带有基于FPGA的数据采集卡的PC分层排列处理，并与支持InfiniBand和LVDS物理链路的定制I/O适配器板连接。ETA设计用于无人值守操作，允许远程控制配置和记录。
英文摘要：
Array-based, direct-sampling radio telescopes have computational and communication requirements unsuited to conventional computer and cluster architectures. Synchronization must be strictly maintained across a large number of parallel data streams, from A/D conversion, through operations such as beamforming, to dataset recording. FPGAs supporting multi-gigabit serial I/O are ideally suited to this application. We describe a recently-constructed radio telescope called ETA having all-sky observing capability for detecting low frequency pulses from transient events such as gamma ray bursts and primordial black hole explosions. Signals from 24 dipole antennas are processed by a tiered arrangement of 28 commercial FPGA boards and 4 PCs with FPGA-based data acquisition cards, connected with custom I/O adapter boards supporting InfiniBand and LVDS physical links. ETA is designed for unattended operation, allowing configuration and recording to be controlled remotely.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
