Spectrum Management for the Protection of Radio Astronomy

射电天文学保护的频谱管理

• 批准号: 2336471
• 负责人: Sarah Marie Bruno
• 金额: $ 44.01万
• 依托单位: Johns Hopkins University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-08-15 至 2025-07-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2336471&HistoricalAwards=false
• 关键词: Spectrum; Management; Protection; Radio; Astronomy

This proposal contains two areas of work, one in pursuing understanding of the impact from radio frequency interference (RFI) to cosmological experiments, especially RFI from spaceborne communication platforms such as satellites, and second to engage in spectrum management activities domestically and internationally. This two-year project focuses on the pursuit of coexistence between active and passive uses of the electromagnetic spectrum, including two main aspects. The first is a research thrust focused on measurements and analysis of impact of satellite downlinks to cosmic microwave background (CMB) astronomy, especially related to the single-dish CMB experiment, CLASS. The other main thrust is domestic and international spectrum management, to perform technical studies and to participate in work for the protection of radio astronomy, especially the CMB experiments. The technical study will include a pilot portion with a frequency generator to transmit signals at expected satellite downlink frequencies to observe the impact on the CLASS data pipeline. This pilot would be followed up by actual observations of satellites, utilizing telemetry to coordinate the observations. The international spectrum management work would focus on provision of technical expertise to three main study groups at the International Telecommunications Union: Study Group 7 (Science Services), Study Group 3 (Propagation Models), and Study Group 4 (Satellites). The PI would evaluate whether radio quiet zone rules could be amended to improve protection for radio astronomy (both in the U.S. and in Chile) and participate in the numerous international telecommunications meetings and conferences.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

该提案包含两个工作领域，一个是追求从射频干扰（RFI）到宇宙学实验的影响，尤其是来自Spaceborne通信平台（例如卫星）的RFI，其次是在国内和国际上从事频谱管理活动。 这个为期两年的项目着重于电磁频谱的主动用途和被动用途之间的共存，包括两个主要方面。首先是一项研究推力，重点是测量和分析卫星下行链路对宇宙微波背景（CMB）天文学的影响，尤其是与单dish CMB实验相关的类别。 另一个主要目的是国内和国际谱系管理，进行技术研究并参与保护射电天文学的工作，尤其是CMB实验。 技术研究将包括一个带有频率发生器的飞行员部分，以在预期的卫星下行链路频率上传输信号，以观察对类数据管道的影响。 该飞行员将随后对卫星进行实际观察，并利用遥测来协调观察结果。 国际频谱管理工作将重点介绍国际电信联盟三个主要研究小组的技术专业知识：研究组7（科学服务），研究小组3（传播模型）和研究组4（卫星）。 PI将评估是否可以修改无线电安静区规则，以改善对射电天文学的保护（在美国和智利），并参加了众多国际电信会议和会议。该奖项反映了NSF的法定任务，并被认为是通过该基金会的知识分子功能和广泛的影响来评估CRITERIA的评估。