Communication,positioning,navigation,and decision-making abilities have evolved into Positioning,Navigation,and Timing(PNT)intelligence during the long process of human migration and hence promoted human evolution.Thi...Communication,positioning,navigation,and decision-making abilities have evolved into Positioning,Navigation,and Timing(PNT)intelligence during the long process of human migration and hence promoted human evolution.This article defines intelligence and smartness from the perspective of biological intelligence.New requirements as a result of the development of communication,navigation,time service,and decision making are identified in this study.The article points out that there are many radio PNT service methods,such as 5G,the new-generation high-speed communication networks and the low-latency and ubiquitous mobile communication networks as well as Global Navigation Satellite System(GNSS),but the integrated application is especially important in providing technical support for the adjustment and control of the physical world by intelligent sensing,cognition,decision-making,and precise coordination.The fusion of 5G and GNSS[including BeiDou Navigation Satellite System(BDS)]information with the corresponding equipment can be embedded into a machine to make it intelligent.Furthermore,the fused information of 5G and GNSS together with the environment information may extend human perception and physical world control ability in terms of time and space scale.It will help to develop critical information infrastructure in the age of intelligence,which will also extend the definition of artificial intelligence.Additionally,the“5G+BDS/GNSS”fusion path is analyzed explicitly herein in terms of realization methods,information processing,and new application services.On the whole,the application of“5G+BDS/GNSS+satellite-based communication”as a critical infrastructure for land,sea,air,space and network spatiotemporal control rights is proposed.展开更多
文摘随着北斗卫星导航系统(BDS)的全球组网成功,基于BDS的应用研究正在如火如荼的进行中,尤其是包括BDS在内的多频多模融合定位正成为研究的重点.利用MGEX(Multi-GNSS Experiment)多个测站的BDS、GPS、GLONASS、Galileo观测数据,基于RTKLIB开源代码,在Visual Studio 2017平台上进行了BDS/GPS、BDS/GLONASS、BDS/Galileo三种组合系统的精密单点定位(PPP)实验,从静态PPP、动态PPP、可见卫星数、精度衰减因子(DOP)等方面对比分析了三种组合系统的定位性能.实验结果表明:BDS/GPS组合系统的可见卫星数最多,各DOP值最小,静态PPP收敛后三个方向的精度优于6 cm.不论是静态PPP还是动态PPP,其定位性能都最好;BDS/GLONASS、BDS/Galileo组合系统动态PPP的定位抖动较大,可见卫星数都要小于BDS/GPS组合系统,收敛时间较长,两者的动态PPP定位性能也差于BDS/GPS组合系统.
基金The Major Consulting Research Project of Chinese Academy of Engineering(No.2018-ZD-02-07)The Wuhan Science and Technology Project(No.2018010401011271)+1 种基金The Major Consulting Research project of China Academy of Engineering(No.2020-ZD-16)China’s Engineering Science and Technology Development Strategy Hubei Research Institute Wuhan Branch Consulting Project.
文摘Communication,positioning,navigation,and decision-making abilities have evolved into Positioning,Navigation,and Timing(PNT)intelligence during the long process of human migration and hence promoted human evolution.This article defines intelligence and smartness from the perspective of biological intelligence.New requirements as a result of the development of communication,navigation,time service,and decision making are identified in this study.The article points out that there are many radio PNT service methods,such as 5G,the new-generation high-speed communication networks and the low-latency and ubiquitous mobile communication networks as well as Global Navigation Satellite System(GNSS),but the integrated application is especially important in providing technical support for the adjustment and control of the physical world by intelligent sensing,cognition,decision-making,and precise coordination.The fusion of 5G and GNSS[including BeiDou Navigation Satellite System(BDS)]information with the corresponding equipment can be embedded into a machine to make it intelligent.Furthermore,the fused information of 5G and GNSS together with the environment information may extend human perception and physical world control ability in terms of time and space scale.It will help to develop critical information infrastructure in the age of intelligence,which will also extend the definition of artificial intelligence.Additionally,the“5G+BDS/GNSS”fusion path is analyzed explicitly herein in terms of realization methods,information processing,and new application services.On the whole,the application of“5G+BDS/GNSS+satellite-based communication”as a critical infrastructure for land,sea,air,space and network spatiotemporal control rights is proposed.
