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

RADYSIS项目是一个自动化系统的原型，用于在指定的地理区域内动态共享电磁（射频）频谱。该系统旨在改善地基射电天文设施和低地球轨道观测被动传感卫星的频谱接入。在指定的区域内，RADYSIS频谱共享系统根据其他用户的当前状态（如位置和工作频率）动态授予频谱访问请求，以防止和减轻干扰。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，该项目支持天文台投资获得更好的科学回报。通过推进无源和有源系统之间安全、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。作为国家无线电动态区概念的开拓者，该项目提供了可用于加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是一个业务系统，目前支持3550至3700 MHz频段的全国频谱共享。这组研究人员将通过整合卫星数据库和实时地理空间频谱共享能力来增强谷歌CBRS SAS，以增加对地球观测卫星的保护。该项目通过增强SAS与Hat Creek射电天文台（HCRO）日常操作计划系统的接口机制，增加了对射电天文学的保护；采用基于国防信息服务局TARDyS3规范的新标准向其他用户发布射电天文观测计划；根据频谱用户和传感器网络的报告快速识别干扰事件；并使用与联邦和非联邦系统交互的新型自动协商服务迅速减轻干扰。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效益：与拟建的用于探测5G/6G传输的近地轨道极轨立方体卫星合作；与国家海洋和大气管理局操作的微波卫星合作；或者在高空飞机或气象气球上部署微波测深仪。该奖项反映了美国国家科学基金会的法定使命，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。

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.