技术
- 网络与连接 - 射频收发器
- 网络与连接 - 射频识别
适用行业
- 航天
- 电信
适用功能
- 产品研发
用例
- 交通模拟
- 虚拟现实
服务
- 系统集成
关于客户
本案例的客户是英国 Jodrell Bank 天文台的 SKA 组织,得到 11 个成员国的支持 - 南非、澳大利亚、加拿大、中国、德国、印度、意大利、新西兰、瑞典、荷兰和英国。 SKA项目旨在挑战爱因斯坦的开创性相对论,研究第一批恒星和星系的形成,探索宇宙中的暗能量和巨大磁场,并回答这个古老的问题:“我们在宇宙中是孤独的吗?” SKA 将是各种类型天线的集合,包括大型碟形反射器和孔径天线,分布在很远的距离上,并作为干涉阵列一起工作。 SKA 的速度将比任何现有射电望远镜快 10,000 倍,灵敏度高 50 倍。
挑战
平方公里阵列(SKA)项目由英国乔德雷尔班克天文台SKA组织领导,旨在挑战爱因斯坦的开创性相对论,研究第一颗恒星和星系的形成,探索宇宙中的暗能量和巨大磁场。宇宙,并回答这个古老的问题:“我们在宇宙中是孤独的吗?” SKA 将是各种类型天线的集合,包括大型碟形反射器和孔径天线,分布在很远的距离上,并作为干涉阵列一起工作。 SKA 的速度将比任何现有射电望远镜快 10,000 倍,灵敏度高 50 倍。然而,由于电缆上的电流,相邻天线和其他系统的接近可能会导致不必要的相互耦合,甚至是低水平的发射。需要最大限度地减少这种相互耦合,这需要识别耦合机制并采取措施来改善隔离。需要进行现场射频 (RF) 耦合调查,但只能在安装后进行。在设计、规划和安装阶段,必须在比例模型上并通过仿真来表征电磁 (EM) 环境。
解决方案
斯泰伦博斯大学的研究主席专注于电磁系统分析和系统间射频干扰 (RFI) 的缓解。 EMC 计量研究与创新 (EMRIN) 小组的 Gideon Wiid 博士和 Kuja Stanley Okoth 先生一直致力于解决 SKA 的电磁兼容性 (EMC) 计量问题。仿真过去是、现在仍然是详细研究干扰特性的唯一可行选择。这需要对计算电磁 (CEM) 模型进行广泛验证,并在电波暗室中对比例模型进行测量。 FEKO 最先进的并行矩量法 (MoM) 求解器在开普敦高性能计算中心 (CHPC) 运行,模拟在几天内完成。对于实际的 MeerKAT 望远镜,现场 RFI 测量是使用工作频率为 30-1000 MHz 的发射参考源 (ERS) 进行的。然后,经过验证的 FEKO 模型可用于进行严格的 RFI 研究,并提出设计、布局、屏蔽和连接建议,以减轻这些极其敏感的望远镜之间的干扰。
运营影响
数量效益
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