Clock and data recovery for acoustic sensor array

声学传感器阵列通常连接到负责记录有效载荷的中央处理器。由于需要实时恢复原始声学信息，标准协议无法达到吞吐量要求。在这项工作中，开发了一种低复杂性，低功耗的通信链路，以实现多个传感器和一个主控制器之间的通信。定义了一种开销非常低的双向通信协议，并且来自多个传感器节点的有效载荷将使用简单的时分双工路由回来。此外，在反向链接期间，控制信息将被发送到传感器。这个项目的目标是使用特定的前端需求来优化点对点链路的性能。为此，需要多个节点的时钟同步，并且使用自适应滤波器可以减轻由于电缆带宽限制造成的信号失真。在整个项目中获得的专业知识是信息和海洋技术的交叉点，这是加拿大工业界高度感兴趣的两个领域。

Acoustic sensor arrays are typically wired to a central processor, responsible for logging the payload. Becausethere is a need to recover the raw acoustic information in real-time, standard protocols cannot achieve thethroughput requirement. In this work, a low-complexity, low-power communication link is developed to enablecommunication between multiple sensors, and one master controller. A bi-directional communication protocolwith very low overhead is defined, and the payload from the multiple sensor nodes will be routed back usingsimple time division duplexing. Also, during the reverse link, control information will be sent to the sensors.The objective of this project is to optimize the point-to-point link performance using specific front-endrequirements. For this purpose, clock synchronization of the multiple nodes will be required, and the distortionof the signal due to cable bandwidth limitations will be mitigated using adaptive filters. The expertise gainedthroughout this project is at the intersect of information and ocean technologies, two areas of high interest forthe Canadian industry.