An Advanced Autocorrelation Spectrometer for the FCRAO

适用于 FCRAO 的先进自相关光谱仪

• 批准号: 9002597
• 负责人: William Irvine
• 金额: $ 10万
• 依托单位: University of Massachusetts Amherst
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-09-15 至 1992-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9002597&HistoricalAwards=false
• 关键词: Advanced; Autocorrelation; Spectrometer; FCRAO

A Focal Plane Array Autocorrelation Spectrometer (FAAS) will be built in order to realize the full potential of a 15 element array receiver at the Five College Radio Astronomy Observatory (FCRAO). This 16,384 channel autocorrelator will utilize correlator chips developed by the Netherlands Foundation for Research in Astronomy. The fundamental clock rate of the correlator is 40MHz. The FAAS will provide 1024 spectral channels, with 20MHz bandwidth, for each of the elements of the array receiver. The FAAS spectrometer can time multiplex the input signal to achieve 200km/sec of bandwidth and approximately 1km/sec resolution for the CO J=1-0 transition. The FAAS is designed to operate also as a hebrid spectrometer for a single receiver. With approximately 15000 channels per receiver bandwidth.

为了充分发挥五校射电天文台（FCRAO） 15元阵列接收机的潜力，将建造一个焦平面阵列自相关光谱仪（FAAS）。这个16384通道的自相关器将利用荷兰天文学研究基金会开发的相关芯片。相关器的基本时钟频率为40MHz。FAAS将为阵列接收器的每个元件提供1024个频谱通道，带宽为20MHz。对于CO J=1-0跃迁，FAAS光谱仪可以对输入信号进行时间复用，达到200km/秒的带宽和大约1km/秒的分辨率。FAAS也被设计成用于单一接收器的混合光谱仪。每个接收机带宽大约有15000个信道。