Design of a reconfigurable receiver front-end for spectrum sensing****

用于频谱感知的可重构接收器前端设计****

• 批准号: 537108-2018
• 负责人: Bousquet, JeanFrancois
• 金额: $ 1.82万
• 依托单位: Dalhousie University
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=646050
• 关键词: Design; reconfigurable; receiver; front; end

With the widespread advancement in artificial intelligence technology, the wireless spectrum is being populated with various signals that are transmitted between remote platforms. In particular, drones can utilize different spectral bands to communicate with command posts and between each other. The ISM bands are often utilized by the drones because the spectrum is free and the bands can serve different applications, because they have different propagation and interference characteristics. In this project, the client is seeking to improve its anti-drone products and services. For surveillance and protection, it is of prime interest to monitor the activity of the remote devices, and in this work spectrum sensing is proposed. For this purpose, a low-cost low-complexity software defined radio will be developed to sense and disrupt activity in the five standard ISM bands. The transceiver will have the capability to target signals coming from different directions of interest. One of the major challenges to achieve this, is the design of a wideband front-end that can sense and transmit signals of interest over a wide frequency range. The specific objectives of the project are to define an antenna array structure to provide angular selectivity, and to develop a low-complexity multi-band RF front-end that can target signals transmitted from as long as 4 km away from the sensor. At the end of the project, a small form factor, wideband front-end architecture will be modelled, and documented. Also, the performance of the front-end chain will be tested in realistic conditions, in an outdoor environment. ******

随着人工智能技术的广泛进步，无线频谱中充满了在远程平台之间传输的各种信号。 特别是，无人机可以利用不同的频段与指挥所以及彼此之间进行通信。 ISM 频段经常被无人机使用，因为频谱是免费的，并且这些频段可以服务于不同的应用，因为它们具有不同的传播和干扰特性。 在这个项目中，客户正在寻求改进其反无人机产品和服务。对于监视和保护，最重要的是监视远程设备的活动，并且在这项工作中提出了频谱感测。 为此，将开发一种低成本、低复杂性的软件定义无线电来感知和干扰五个标准 ISM 频段中的活动。 收发器将能够定位来自不同感兴趣方向的信号。 实现这一目标的主要挑战之一是设计能够在宽频率范围内感测和传输感兴趣信号的宽带前端。 该项目的具体目标是定义一种天线阵列结构以提供角度选择性，并开发一种低复杂度的多频段射频前端，该前端可以瞄准从距离传感器长达 4 公里处传输的信号。在项目结束时，将对小型宽带前端架构进行建模和记录。 此外，前端链的性能将在室外环境的真实条件下进行测试。 ******