A Technology Development Project for the Large-N/Small-D SKA Concept

大N/小D SKA概念的技术开发项目

• 批准号: 0431486
• 负责人: James Cordes
• 金额: $ 1200万
• 依托单位: Cornell University
• 依托单位国家: 美国
• 项目类别: Cooperative Agreement
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-10-01 至 2012-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0431486&HistoricalAwards=false
• 关键词: Technology; Development; Project; Large; Small

SKA TDP ABSTRACTThis award will be used to undertake a Technology Development Program (TDP) for the Square Kilometer Array (SKA). The SKA is a global program to design and build a new generation radio telescope to operate at meter to centimeter wavelengths. The SKA will be an aperture synthesis facility wherein signals from separated antennas are combined digitally to simulate a telescope having a diameter equal to the largest antenna separation, planned to be more than 3000 km. It will operate over the frequency range from roughly 100 MHz to 10-25 GHz. The SKA will have a collecting area of order one million square meters, a sensitivity 50 times higher than the Very Large Array, and an instantaneous field of view of at least 1 square degree. It will be a powerful survey telescope with the capability to follow up individual objects with high angular and time resolution.The SKA TDP will examine the technical feasibility and costs of the so-called Large-N/Small-D concept (LNSD, where N is number of antennas and D is the diameter of each). Activities within the TDP will tap areas of expertise in the U.S. and also complement work done outside the U.S. Some of the work will comprise unique contributions to the SKA project, while others will be achieved via collaborations within the context of international working groups. The TDP will complement a systems design and costing effort carried out as a Preparatory Study under the European Commission?s Framework Programme 7.

SKA TDP摘要该奖项将用于承担平方公里阵列（SKA）的技术开发计划（TDP）。 SKA是一项全球计划，旨在设计和建造新一代射电望远镜，以米到厘米波长运行。SKA将是一个孔径合成设施，其中来自分离天线的信号以数字方式组合，以模拟直径等于最大天线间隔的望远镜，计划超过3000公里。 它将在大约100 MHz到10-25 GHz的频率范围内工作。 SKA的收集面积将达到100万平方米，灵敏度比甚大阵列高50倍，瞬时视场至少为1平方度。这将是一个强大的巡天望远镜，能够以高角度和时间分辨率跟踪单个物体，SKA TDP将审查所谓的大N/小D概念（LNSD，其中N是天线数量，D是每个天线的直径）的技术可行性和成本。 SDP内的活动将利用美国的专业知识领域，并补充美国境外所做的工作。其中一些工作将包括对SKA项目的独特贡献，而其他工作将通过国际工作组背景下的合作来实现。 TDP将补充系统设计和成本计算工作，作为欧盟委员会的预备研究。s框架方案7。