半实物仿真平台中GPS导航信息处理器的设计与实现  

Design and implementation of GPS navigation information processor in semi-physical simulation platform

作　　者：孙云春[1] 朱党锋[1] 刘一栋[1] 刘张博[1] 孙玉柱[1] SUN Yunchun;ZHU Dangfeng;LIU Yidong;LIU Zhangbo;SUN Yuzhu(Department of Activity Measurement and Control,Xi’an Satellite Control Center,Weinan 714000,China)

机构地区：[1]西安卫星测控中心活动测控回收部,陕西渭南714000

出　　处：《现代电子技术》2016年第15期171-175,共5页Modern Electronics Technique

摘　　要：基于半实物仿真平台,对GPS信息处理器进行了软硬件设计。将同轴高频馈线收到的信号通过GPS模块接收NMEA0183协议格式的信息源和用于精准对时的秒脉冲信号,利用基于嵌入式处理器AT89C52单片机的信号处理电路,提取导航信息,经由通信串口将GPS信息源和相关信息传送给系统主控器使用。通过单片机查询信息帧中的状态位,利用双向开关芯片选通发光二极管用于指示工作状态。从而将多种导航信息进行分析、提取并转发,保证了有效信息能实时可靠地进行接收和处理,避免过多占用主服务器处理时间,提高了信息利用的实时性及有效性。On the basis of the semi?physical simulation platform,the hardware and software of GPS information processorwere designed. The signal received by coaxial high frequency feeder is sent to the GPS modular to receive the information sourcewith NMEA0183 protocol format and pulse per second signal used for accurate time synchronization. The signal processing cir?cuit based on AT89C52 is used to extract the navigation information,and then send the GPS information source and relevant in?formation to the system master through serial communication port for using. The status bit in information frame is queried with thesingle chip microcomputer,and then the bilateral switch chip is used to select the light emitting diode to indicate the working con?dition. The analysis,extraction and forwarding for a variety of navigation information can ensure the real?time and reliably receivingand processing of the effective information,avoid occupying the main server′s processing time,and improve the real?time perfor?mance and effectiveness of information utilization.

关 键 词：半实物仿真 全球定位系统 AT89C52 NMEA0183协议 

分 类 号：TN967.34[电子电信—信号与信息处理] TP368.1[电子电信—信息与通信工程]