导航综合基带的设计与实现  

Design and implementation of navigation synthetical baseband equipment

作　　者：张金涛 韩双林[1,2] 杨丽云 胡正群[3] ZHANG Jintao;HAN Shuanglin;YANG Liyun;HU Zhengqun(State Key Laboratory of Satellite Navigation System and Equipment Technology,Shijiazhuang 050081,China;The 54th Research Institute of CETC,Shijiazhuang 050081,China;National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100012,China)

机构地区：[1]卫星导航系统与装备技术国家重点实验室,石家庄050081 [2]中国电子科技集团公司第五十四研究所,石家庄050081 [3]中国科学院国家天文台,北京100012

出　　处：《全球定位系统》2022年第3期85-90,共6页Gnss World of China

基　　金：:国家自然科学基金资助项目(91638203)。

摘　　要：中国区域导航定位系统(CAPS)是我国一种具有自主知识产权的新型卫星导航系统.基于卫星转发地面产生的导航信号的工作模式,实现卫星导航功能.导航综合基带是CAPS主控站的重要终端设备.利用无线电软件设计思想,设计了导航综合基带总体架构.采用标准面向仪器系统的PCI扩展(PXI)机箱结构,基于总线设计,可扩展性强.基带的关键技术包括发射信号的频率补偿技术,高精度接收技术,设备高稳定时延保持技术.实际测试结果表明:该导航综合基带性能良好,伪码测量精度优于0.20 ns,通道时延稳定度优于0.25 ns,频率补偿精度优于0.8 Hz,满足CAPS的需求.Chinese area positioning system(CAPS)is a new satellite navigation system with independent intellectual property rights in China.Based on the working mode of the satellite forwarding the navigation signal generated on the ground,the satellite navigation function is realized.Navigation integrated baseband is an important terminal equipment of the main control station of CAPS.The architecture of navigation integrated baseband is designed by software radio design.Standard PCI extensions for instrumentation(PXI)chassis structure and bus-based design with strong scalability is selected.The key technologies of baseband are described including frequency compensation technology of transmitting signals,high precision receiving technology,high stability delay keeping technology of equipment.The actual test results show the good performance of the integrated baseband equipment.The measurement accuracy of pseudorange is better than 0.20 ns.The stability of channel delay is better than 0.25 ns,and the accuracy of frequency compensation is better than 0.8 Hz,which can meet the needs of CAPS.

关 键 词：综合基带 导航系统 设备时延 频率补偿 中国区域导航定位系统(CAPS) 

分 类 号：P228.4[天文地球—大地测量学与测量工程]