Reconfigurable architectures for Scientific GNSS instruments and space receivers

现在有许多不同的全球导航卫星系统(GNSS)、区域增强系统以及地面伪卫星正在使用。这些信号中的每一个都有一组复杂的信号，需要在硬件中采用不同的方法进行处理。全球导航卫星系统接收器的捕获单元在使用硬件资源(存储器和逻辑)以支持多种信号类型方面可能效率很低。在全球导航卫星系统反射仪(GNSS-R)的应用中，使用与采集单元类似的结构来创建反射的全球导航卫星系统信号的延迟多普勒图。这种结构在支持多种GNSS信号类型时效率非常低。该项目背后的想法是使用动态FPGA(现场可编程门阵列)重新配置，以最大限度地提高硬件资源的效率和提高仪器的能力。在全球导航卫星系统-R仪器和空间全球导航卫星系统接收器中普遍使用现场可编程门阵列。该项目的重点将是支持伽利略信号，以便有效地实施全球导航卫星系统和采购部。该项目将实现更大的仪器功能(支持更多信号)，同时具有成本效益、高效和低功耗。

There are now many different Global navigation satellite systems (GNSS), regional augmentations as well as ground-based pseudolites being used. Each of these has a complex set of signals which require different approaches to process in the hardware. The acquisition unit of a GNSS receiver can be very inefficient in its use of hardware resources (memory and logic) to support multiple signal types. In GNSS reflectometry (GNSS-R)applications, a similar structure to the acquisition unit is used to create a delay Doppler map of reflected GNSS signals. This structure is very inefficient when supporting multiple GNSS signal types.The idea behind this project would be to use dynamic FPGA (Field Programmable Gate Array) reconfiguration to maximise the efficient usage of hardware resources and improve the capabilities of the instruments. FPGAs are in common use in GNSS-R instruments and space GNSS receivers. The focus of the project would be on supporting Galileo signals for efficient implementations of GNSS-R and acquisition units. This project willenable greater instrument capabilities (support of more signals) while being cost effective, efficient and low power.