Development of a Flexible Wideband Digital Backend for Radio Interferometry - A Consortium Proposal

开发用于无线电干涉测量的灵活宽带数字后端 - 联盟提案

• 批准号: 0521233
• 负责人: Alan Whitney
• 金额: $ 63.93万
• 依托单位: Northeast Radio Observatory Corp
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-04-15 至 2009-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0521233&HistoricalAwards=false
• 关键词: Development; Flexible; Wideband; Digital; Backend

AST-0521233/Whitney, MITModern high speed analog-to-digital converters and Floating Point Gate Array-based architectures will be used to develop a versatile new Very Long Baseline Interferometry digital backend system that will bring dramatic improvements to the practice of Very Long Baseline Interferometry. The development program will: replace nearly a rack full of current analog backend equipment; interface easily to the receiver system of almost any radio telescope in the world; process 512 MHz of bandwidth from each of two inputs (for example, both polarizations of a signal) in the range 100 MHz to 12 GHz; extend the output data rate from 1 gigabit per second to 4 gigabits per second; interface directly to the new generation of high-data-rate Very Long Baseline Interferometry data systems, including the Mark 5; and cost approximately 5% of the current backend system.

AST-0521233/Whitney，MIT现代高速模数转换器和基于浮点门阵列的架构将用于开发一个多功能的新型甚长基线干涉测量数字后端系统，该系统将为甚长基线干涉测量的实践带来巨大的改进。开发计划将：替换几乎一个装满当前模拟后端设备的机架;轻松连接到世界上几乎任何射电望远镜的接收机系统;处理来自两个输入的512 MHz带宽将输出数据速率从每秒1吉比特扩展到每秒4吉比特;直接连接到新一代高数据速率甚长基线干涉测量数据系统，包括Mark 5;成本约为当前后端系统的5%。