Next-Generation Multi-Band Satellite Systems

下一代多频段卫星系统

• 批准号: 288191-2012
• 负责人: Grami, Ali
• 金额: $ 1.31万
• 依托单位: University of Ontario Institute of Technology
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=571362
• 关键词: Next; Generation; Multi; Band; Satellite

Making the information infrastructure accessible to all Canadians is a major principle advanced by the government to make Canada the most connected nation in the world. Canada's vast territory, low population density, and harsh northern terrain pose economic and logistical barriers to the expansion of terrestrial broadband networks. The only affordable means of providing universal access to areas un-served or under-served by terrestrial networks is via satellites. This research on the next-generation of advanced multi-band multi-beam high-capacity GEO satellite systems presents many challenges, as it is a huge, multi-dimensional non-linear optimization problem. It is virtually impossible to fully meet all relevant requirements and constraints, for some are clearly in conflict with others. In order to develop a novel, comprehensive methodology of optimally designing advanced satellite systems, an extensive research will be carried out by a PhD student to assess the impact of the following parameters on one another and on overall system: satellite resources and requirements (buses, launchers, power, mass, real estate, orbital slots, payload architectures, beam configurations), frequency bands (30/20 GHz Ka-band, 50/40 GHz V-band, and 80/70 GHz W-band), service considerations (connectivity, capacity, coverage, cost), terminal features (antenna, power amplifier, uplink power control, access, speed, modulation, coding), interference components (inter-modulation, adjacent satellite, adjacent carrier, adjacent channel, cross-polarization, inter-beam, de-polarization), and performance parameters (bit error rate, delay, link availability). Also, in parallel, the following three major research projects, which can have profound impacts on satellite resources and link characteristics and in turn on the optimum design methodology, will be carried out by three MASc students: i) asymmetric apportioning of link availability between uplink and downlink, ii) uneven apportioning of link degradations: thermal noise versus a multitude of interferences, and iii) unequal allotments of spectrum between forward link and return link.

使所有加拿大人都能使用信息基础设施是政府提出的一项重要原则，目的是使加拿大成为世界上联系最紧密的国家。加拿大幅员辽阔，人口密度低，北方地形恶劣，对地面宽带网络的扩展构成了经济和物流障碍。要向地面网络没有服务或服务不足的地区提供普遍接入，唯一负担得起的手段是通过卫星。下一代先进的多波段多波束大容量GEO卫星系统的研究面临着许多挑战，因为它是一个巨大的多维非线性优化问题。实际上不可能完全满足所有相关要求和限制，因为有些要求和限制显然与其他要求和限制相冲突。为了开发先进卫星系统最佳设计的一种新的综合方法，将由一名博士生进行广泛的研究，以评估下列参数相互之间以及对整个系统的影响：卫星资源和需求（总线、发射器、功率、质量、真实的资产、轨道位置、有效载荷结构、波束配置）、频带（30/20 GHz Ka波段、50/40 GHz V波段和80/70 GHz W波段），服务注意事项（连通性、容量、覆盖范围、成本）、终端功能（天线、功率放大器、上行链路功率控制、接入、速度、调制、编码）、干扰分量（互调、相邻卫星、相邻载波、相邻信道、交叉极化、波束间、去极化）和性能参数（误码率、延迟、链路可用性）。此外，与此同时，以下三个主要研究项目将由三名MASc学生进行，这些项目可能对卫星资源和链路特性以及最佳设计方法产生深远影响：i）上行链路和下行链路之间链路可用性的非对称分配，ii）链路降级的非均匀分配：热噪声与大量干扰的关系，以及iii）前向链路和返回链路之间的频谱分配不均等。