多模多频卫星导航接收机数据处理技术研究  

Research on Data Processing Technology of Multi-mode and Multi-frequency Satellite Navigation Receiver

作　　者：陈亮 孟海涛[3] 展昕 赵胜 CHEN Liang;MENG Haitao;ZHAN Xin;ZHAO Sheng(The State Key Laboratory of Satellite Navigation System and Equipment Technology,Shijiazhuang 050081,China;The 54th Research Institute of CETC,Shijiazhuang 050081,China;Xi’an Satellite Control Center,Xi’an 710043,China;The 722nd Research Institute of China Shipbuilding Industry Corporation,Wuhan 430205,China)

机构地区：[1]卫星导航系统与装备技术国家重点实验室,河北石家庄050081 [2]中国电子科技集团公司第五十四研究所,河北石家庄050081 [3]西安卫星测控中心,陕西西安710043 [4]中国船舶重工集团公司第七二二研究所,湖北武汉430205

出　　处：《无线电工程》2020年第6期465-469,共5页Radio Engineering

基　　金：国家部委基金资助项目。

摘　　要：卫星导航系统的不断升级完善加快了导航接收机的更新换代,导航接收机数据处理技术也需要进行不断完善。针对多模多频导航接收机数据处理技术中的多模多频导航定位技术、数据输出技术和远程加载技术进行了深入研究。多模多频导航定位技术中提出了采用“高内聚、低耦合”定位处理流程,所有通用处理方法不进行系统区分,实现了各处理方法独立无耦合;针对卫星导航系统频点的增加导致观测信息数据协议包较长的问题,设计了一种伪距增量的方式进行数据传输协议;针对多模多频导航接收机含有多FPGA和多DSP芯片的特点,设计了一种基于CRC校验方式进行远程加载,具备加载速度快和成功率高等优点。The continuous upgrade of satellite navigation system accelerates the update of navigation receiver,so the data processing technology of navigation receiver also needs to be improved.The multi-mode and multi-frequency positioning processing technology,data output technology and remote loading technology for data processing of multi-mode and multi-frequency navigation receiver are studied.The multi-mode and multi-frequency positioning technology adopts the processing method of“high cohesion and low coupling”.All the general processing methods are independent and uncoupled.To deal with the disadvantage of long protocol of observation data packet caused by the increase of frequency points in four systems,a pseudorange increment method for data transmission is designed to shorten the observation data packet.For multi FPGA and DSP chip upgrade,a remote loading method is designed based on CRC validation,which has the advantages of fast loading and high success rate.

关 键 词：卫星导航系统 接收机 数据处理 导航定位 多频 多模 

分 类 号：TN967.1[电子电信—信号与信息处理]