一种GNSS中频信号模拟器的设计与硬件实现  

Design of GNSS IF Signal Simulator and Hardware Implementation

作　　者：朱正鹏 熊焱 朱旭锋[1] 王苑瑾 杨文良 Zhu Zhengpeng;Xiong Yan;Zhu Xufeng;Wang Yuanjin;Yang Wenliang(Beijing Aerospace Automatic Control Institute,Beijing 100854,China)

机构地区：[1]北京航天自动控制研究所,北京100854

出　　处：《航天控制》2020年第4期74-80,共7页Aerospace Control

基　　金：核心电子器件在导弹控制系统中的验证与应用2017ZX01013101-002。

摘　　要：提出一种用于描述GNSS中频信号的数学模型和用于模拟产生GNSS中频信号的功能模型。在此基础上,设计出GNSS中频信号模拟器的硬件实现方案,包括芯片选取,功能划分和工作流程控制,给出了软件仿真结果和实际观测结果。该方案实现简单,通过修改相应的算法模块可以模拟各种类型GNSS中频信号,对各类接收机捕获、跟踪及测量精度进行标定,为我国新一代导航系统应用和发展提供了开放式平台。A mathematical model is presented for describing GNSS IF signals and a functional model is established for simulating the generation of GNSS IF signals. On this basis,the hardware implementation scheme of GNSS IF signal simulator is proposed,including chip selection,function division and workflow control. At last,the software simulation results and actual observations are presented by the work. The scheme is simple to implement,and various types of GNSS intermediate frequency signals can be simulated by modifying corresponding algorithm modules. The program can calibrate the capture,tracking and measurement accuracy of various receivers and an open platform is provided for the application and development of China’s new generation navigation system.

关 键 词：GNSS 信号模拟器 中频 数字上变频 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]