SBIR Phase I: Digital Correlator Imaging Spectrometer For Submillimeter Astronomy

SBIR 第一阶段：亚毫米天文学数字相关成像光谱仪

• 批准号: 0338656
• 负责人: Steven Kaplan
• 金额: $ 10万
• 依托单位: HYPRES, Inc.
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-01-01 至 2004-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0338656&HistoricalAwards=false
• 关键词: SBIR; Phase; Digital; Correlator; Imaging

This Small Business Innovation Research (SBIR) Phase I project aims to develop a novel broadband digital spectrometer for radio-frequency receivers, with particular application to an imaging spectrometer for sub-millimeter-wave astronomy. For optimum performance, such a receiver will make use of a cryogenic mixer to generate an intermediate-frequency output ~1 GHz. A spectrometer that can accept this type of mixer output and then generate the signal power spectrum with frequency resolution ~1 MHz is proposed. The core of this spectrometer will be a fast, sensitive analog-to-digital converter and a digital auto-correlator based on rapid-single-flux-quantum (RSFQ) digital logic, designed to operate with a commercial cryo-cooler at a temperature of 4 K. Other components of this receiver, such as multiplexers to combine pixel outputs, have already been developed. These components will be integrated monolithically on the same niobium integrated circuitThe auto-correlator has extensive applications in RF communications and image-processing systems currently limited by the speed of digital processing. Some of these applications include Code Division Multiple Access (CDMA) communications, advanced instrumentation for ground-based and space-based spectroscopy and signal analysis are further enabled by the combination of the proposed auto-correlator with recent advances in the manufacturing of affordable cryo-coolers. The digital-RF base station target, where the auto-correlator would be used for load management, and its close relative, the cross-correlator could be used for reducing multi-path distortion. The digital-RF base station with software radio architecture represents a multi-billion dollar market, from which even a small market share will be worthwhile pursuing.

这项小型企业创新研究（SBIR）第一阶段项目旨在开发一种用于射频接收器的新型宽带数字光谱仪，特别是用于亚毫米波天文学的成像光谱仪。为了获得最佳性能，这种接收器将利用低温混频器产生1 GHz的中频输出。提出了一种能够接受这种混频器输出的谱仪，从而产生频率分辨率为1 MHz的信号功率谱。该光谱仪的核心将是一个快速、灵敏的模数转换器和一个基于快速单通量量子（RSFQ）数字逻辑的数字自相关器，设计用于在4 K温度下与商用低温冷却器一起工作。该接收器的其他组件，如用于组合像素输出的多路复用器，已经开发出来。这些组件将被集成在同一个铌集成电路上。自相关器在射频通信和图像处理系统中有广泛的应用，目前受数字处理速度的限制。其中一些应用包括码分多址（CDMA）通信，地基和天基光谱和信号分析的先进仪器，通过将所提出的自相关器与经济实惠的冷冻冷却器制造的最新进展相结合，进一步实现。数字射频基站目标，其中自相关器将用于负载管理，其近邻，互相关器可用于减少多径失真。具有软件无线电架构的数字射频基站代表着数十亿美元的市场，即使是很小的市场份额也值得追求。