Use-case and Technology Evaluation for UK CNI Time and Frequency Dissemination using the existing 198kHz broadcast network

使用现有 198kHz 广播网络进行英国 CNI 时间和频率传播的用例和技术评估

• 批准号: 10007359
• 金额: $ 12.67万
• 依托单位: ARQIVA LIMITED
• 依托单位国家: 英国
• 项目类别: Collaborative R&D
• 财政年份: 2021
• 资助国家: 英国
• 起止时间: 2021 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=10007359
• 关键词: Use; case; Technology; Evaluation; UK

Arqiva, the BBC and Chronos want to evaluate the use of the existing 198 kHz infrastructure, currently used for audio broadcasting of the BBC's Radio 4 Longwave service, to also disseminate time and frequency to low cost, fixed location receivers suitable for applications including Critical National Infrastructure.If the 198 kHz system can be modified to take an accurate time signal there are significant advantages.* The infrastructure already exists and can be upgraded quickly* Wholly UK-based solution covering the UK landmass* Terrestrial and not space based, thus complementary to GNSSThe key innovation is the modification of the system to add an accurate time signal with the additional information for a receiver to be able to decorrelate the signals from the existing transmitter sites and generate a sub one microsecond accurate time epoch.?The evaluation will look at;* Synchronisation of the sites that make up the 198?kHz network with UTC* The modification of the 198 kHz signal to add the time signal and helper information* Building link budgets for several end device use cases to serve specific potential customer requirements

Arqiva、BBC和Chronos希望评估现有的198 kHz基础设施的使用情况，该基础设施目前用于BBC Radio 4 Longwave服务的音频广播，还可以将时间和频率传播到低成本的固定位置接收器，适用于包括关键国家基础设施在内的应用。如果198 kHz系统可以进行修改，以获取准确的时间信号，则具有显著的优势。*基础设施已经存在，可以快速升级 * 完全基于英国的解决方案，覆盖英国大陆 * 地面而不是空间，因此与GNSS互补关键的创新是修改系统，以添加准确的时间信号，并为接收器提供额外的信息，以便能够对来自现有发射机站点的信号进行解相关，并生成一个低于1微秒的准确时间历元。评估将着眼于;* 同步的网站，使198？* 修改198 kHz信号以添加时间信号和辅助信息 * 为多个终端设备用例构建链路预算，以满足特定的潜在客户需求