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arXiv 1010.2771astro-ph.IM
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WSRT的射频干扰缓解

Radio Frequency Interference Mitigation at the WSRT

P. A. Fridman, W. A. Baan, R. P. Millenaar

摘要:

射电天文台站的灵敏度常常受到各种地面活动造成的人为射频干扰(RFI)的限制。本文提出了一种基于实时数字信号处理的Westerbork综合射电望远镜射频干扰抑制子系统(RFIMS),该系统基于功能强大的现场可编程门阵列处理器。在该系统中,被RFI污染的射电天文信号在常规的后端相关处理之前被RFIMS“清洗”。RFIMS的高时间和频率分辨率允许比标准射电望远镜后端配置更好地检测和切除RFI。

英文摘要:

The sensitivity of radio astronomical stations is often limited by man-made radio frequency interference (RFI) due to a variety of terrestrial activities. An RFI mitigation subsystem (RFIMS) based on real-time digital signalprocessing is proposed here for the Westerbork Synthesis Radio Telescope based on a powerful field programmable gate array processor. In this system the radio astronomy signals polluted by RFI are "cleaned" with the RFIMS before routine back-end correlation processing takes place. The high temporal and frequency resolution of RFIMS allows the detection and excision of RFI better than do standard radio telescope back-end configurations.

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。

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