Software defined radio (SDR) for ground station design

在过去的几年里，我们进行了研究，以开发新技术，扩展纳米卫星平台的能力，用于商业和科学目的。最近，我们一直在与工业伙伴合作，建设纳米卫星通信系统设计的能力。研究的重点是可重新配置的软件定义无线电（SDR）设计，以实现高数据速率收发器和多频段无线电概念。2015年，我们与afflare Systems（在OCE VIP项目下）合作，对afflare新开发的收发器blushift （TM）在纳米卫星上的可行性进行了研究，并进一步开发了s波段频率的SDR概念。通过拟议的合作研究与开发（CRD）计划，我们建议扩展这项研究，与afflare合作，进一步开发用于纳米卫星应用的可重构SDR。特别是，我们将使用SDR设计和原型s波段地面站，用于(1)具有多波段通信的柔性地面站；(2)协调任务中多个agent同时控制；(3)地面站网络设计。地面站是专门为立方体卫星应用而设计的，但我们的目标是使用配备s波段收发器的多架无人机（uav）来演示这一概念。立方体卫星是一种典型的纳米卫星平台（也被认为是纳米卫星的一个子类），由多个10×10×10立方厘米单位组成。立方体卫星的质量不超过1.33千克，其电子和结构通常使用商用现货（COTS）组件。我们预计，拟议的研究结果将使立方体卫星和无人机开发商以及整个加拿大航天工业能够设计和商业化先进的下一代航天器，用于广泛的工业和研究应用。

For the past few years we have conducted research to develop new technologies that extend the capabilities of the nanosatellite platform for both commercial and scientific purposes. More recently, we have been working with industry partners to build capacity in nanosatellite communication system design. The focus of the research has been on the re-configurable software defined radio (SDR) design to enable high data-rate transceiver as well as multi-band radio concept. In 2015, we worked with Aflare Systems (under the OCE VIP program) to examine Aflare's newly developed transceiver, BlueShift(TM) for its feasibility on nanosatellite, and further developed SDR concept in S-band frequency.Through the proposed Collaborative Research and Development (CRD) program, we propose to extend this research, in partnership with Aflare, to further develop reconfigurable SDR for nanosatellite applications. In particular, we will design and prototype S-band ground station using SDR for (1) flexible ground station with multi-band communication; (2) simultaneous control of multiple agents in a coordinated mission; and (3) ground station network design. The ground station is specifically designed for CubeSat applications, but we aim to demonstrate the concept using multiple unmanned aerial vehicles (UAVs) equipped with S-band transceivers. A CubeSat is a typical nanosatellite platform (also considered a sub-class of nanosatellites) that consists of multiples 10×10×10 cm3 cubic units. CubeSats have a mass of no more than 1.33 kilograms per unit, and often use commercial off-the-shelf (COTS) components for their electronics and structure. We anticipate that the results of the proposed research will enable CubeSat and UAV developers and Canadian space industry at large, to design and commercialize advanced, next generation spacecraft for wide range of industry and research applications.