SII-NRDZ: Radio Astronomy Dynamic Satellite Inteference-Mitigation and Spectrum Sharing (RADYSISS)

SII-NRDZ：射电天文学动态卫星干扰缓解和频谱共享（RADYSISS）

• 批准号: 2232368
• 负责人: Kevin Gifford
• 金额: $ 200万
• 依托单位: University of Colorado at Boulder
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-10-01 至 2025-09-30
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2232368&HistoricalAwards=false
• 关键词: SII; NRDZ; Radio; Astronomy; Dynamic

The RADYSIS project prototypes an automated system for dynamically sharing the electromagnetic (radio-frequency) spectrum in defined geographic zones. The system seeks to improve spectrum access for ground-based radio astronomy facilities and for low-earth-orbit-observing passive-sensing satellites. Within a defined zone, the RADYSIS spectrum sharing system dynamically grants spectrum access requests based on the current state of other users, such as their location and operating frequency, in ways that prevent and mitigate interference. Goals of the spectrum sharing system include enabling radio astronomers to make observations outside the bands reserved for passive sensing and protecting earth-observing satellites from increasing interference by terrestrial wireless communications systems. By helping protect passive users, the project supports better scientific return from observatory investments. By advancing the goal of secure, dynamic spectrum sharing between passive and active systems, the project supports the social and economic benefits that come from continued growth in wireless usage. By serving as a pathfinder for the National Radio Dynamic Zone concept, the project delivers lessons learned that can be used to enhance spectrum sharing for other sites and applications. The RADYSIS spectrum sharing system is an enhancement to the Google Citizens Broadband Radio Service (CBRS) Spectrum Access System (SAS). The Google CBRS SAS is an operational system currently supporting nationwide spectrum sharing in the 3550 to 3700 MHz band. This team of investigators will enhance the Google CBRS SAS to add protection for earth observation satellites by incorporating a satellite database and a real-time geospatial spectrum sharing capability. The project adds protection for radio astronomy by enhancing the SAS with mechanisms to: interface to the Hat Creek Radio Observatory (HCRO) daily operational planning system; publish radio astronomy observation plans to other users employing a new standard based on the Defense Information Services Agency TARDyS3 specification; rapidly identify interference incidents based on reports from spectrum users and sensor networks; and rapidly mitigate interference using a new automated negotiation service that interacts with federal and non-federal systems. Field tests at HCRO will explore behavior and benefits of the prototype spectrum sharing system for radio astronomy through tests involving the Allen Telescope Array. The field tests will explore behavior and benefits for earth-observing satellites through one of the following methods: collaboration with proposed LEO polar-orbiting cubesats designed to detect 5G/6G transmissions; collaboration with microwave satellites operated by the National Oceanic and Atmospheric Administration; or by deploying microwave sounders on high-altitude aircraft or weather balloons.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.

RADYSIS项目开发了一个自动化系统原型，用于在定义的地理区域内动态共享电磁（射频）频谱。该系统旨在改善地面射电天文学设施和低地球轨道观测被动传感卫星的频谱使用。在定义的区域内，RADYSIS频谱共享系统基于其他用户的当前状态（例如他们的位置和工作频率），以防止和减轻干扰的方式动态赠款频谱接入请求。频谱共享系统的目标包括使射电天文学家能够在为被动传感保留的波段之外进行观测，并保护地球观测卫星免受地面无线通信系统日益增加的干扰。通过帮助保护被动用户，该项目支持从观测站投资中获得更好的科学回报。通过推进被动和主动系统之间安全、动态频谱共享的目标，该项目支持无线使用持续增长带来的社会和经济效益。通过作为国家无线电动态区概念的探路者，该项目提供了可用于增强其他站点和应用的频谱共享的经验教训。RADYSIS频谱共享系统是对谷歌公民宽带无线电服务（CBRS）频谱接入系统（SAS）的增强。谷歌CBRS SAS是一个运营系统，目前支持3550至3700 MHz频段的全国频谱共享。该研究小组将增强谷歌CBRS SAS，通过整合卫星数据库和实时地理空间频谱共享能力，增加对地观测卫星的保护。该项目通过以下机制增强了对射电天文学的保护：与帽子溪射电天文台（HCRO）日常业务规划系统的接口;向其他用户发布射电天文学观测计划，采用基于国防信息服务局TARDyS 3规范的新标准;根据频谱用户和传感器网络的报告快速识别干扰事件;并且使用与联邦和非联邦系统交互的新的自动协商服务来快速减轻干扰。HCRO的现场测试将通过涉及艾伦望远镜阵列的测试，探索射电天文学原型频谱共享系统的行为和好处。现场测试将通过以下方法之一探索地球观测卫星的行为和好处：与拟议的LEO极轨道立方体卫星合作，旨在检测5G/6 G传输;与美国国家海洋和大气管理局运营的微波卫星合作;或者在高空部署微波探测器，该奖项反映了NSF的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。