GNSS接收机在FPGA上的设计与实现  

Design and Implementation of GNSS Receiver Based on FPGA

作　　者：刘善武 李伟伟 计旭 杨启源 张伟 Liu Shanwu;Li Weiwei;Ji Xu;Yang Qiyuan;Zhang Wei(Shanghai Aerospace Control Technology Institute,Shanghai 201109,China)

机构地区：[1]上海航天控制技术研究所,上海201109

出　　处：《航天控制》2022年第1期11-16,共6页Aerospace Control

摘　　要：针对目前采用ASIC芯片架构的GNSS接收机设计完成后算法和软件不易改变、扩展性低和灵活性差等缺点,提出一种基于FPGA的接收机架构并进行了软硬件设计。接收机在FPGA芯片的基础上完成信号的捕获、跟踪和解算等一系列操作,提高了接收机的集成度、扩展性和兼容性。同时针对卫星定位原理造成的高程误差较大的缺点,将高精度大气压强传感器引入接收机,对接收机输出的高度信息进行校正。地面跑车试验结果表明,该接收机能够可靠实现符合预期的定位功能,具有一定的工程实用性。The ASIC chip architecture is adopted in the current GNSS receiver. After the design is completed, the algorithm and software are not easy to change, and the scalability is low and flexibility is poor. A new kind of architecture based on FPGA is proposed, also the hardware and software are designed based on it. A series of operations are completed, such as signal capture, tracking and calculation on the basis of FPGA in the receiver, which greatly improve the integration, expansibility and compatibility of the receiver. Moreover, aiming at the disadvantage of large altitude error caused by the principle of satellite positioning, a high-precision atmospheric pressure sensor is introduced into the receiver to correct the altitude information output by the receiver. The experimental results show that the receiver can reliably achieve the expected functions and has certain engineering practicability.

关 键 词：全球导航卫星系统 接收机 FPGA DSP 气压高度表 

分 类 号：TN965.5[电子电信—信号与信息处理]