摘要
全球导航卫星系统(Global navigation satellite system, GNSS)是目前普遍使用的定位手段,其利用多种定位卫星为用户提供全球范围内的高精度位置信息.但由于城市密集区或室内环境对卫星信号的遮挡和吸收作用,使得常用导航方案在这些地区存在定位精度差等问题.机会信号导航(Navigation via signal of opportunity, NAVSOP)通过接收、处理空间中已存在的信号实现对用户的定位,在克服这些问题上优势十分突出,近年来得到学术界的广泛关注.鉴于此,对NAVSOP常用定位方法进行总结,并分析其在不同系统中的适用性,详述不同类型NAVSOP系统的技术特点和研究现状.针对单一导航系统鲁棒性差的问题,从系统工作方式等方面分析NAVSOP在组合导航中应用的优势.最后指出该研究领域中仍然存在的问题,并对进一步的研究方向进行展望.
The global navigation satellite system(GNSS)is a commonly used positioning solution,which provides users with worldwide precise location information with multiple positioning satellites.Due to the satellite signals being blocked and absorbed in the deep urban or indoor environment,the conventional navigation solutions are not precise enough for positioning in these areas.Navigation via signal of opportunity(NAVSOP)achieves users positioning by receiving and processing the signals already existed in the environment,which has been attracting significant attention in academic fields for its advantages in overcoming the problems.Common positioning methods used for NAVSOP are summarized,and their applicability in different systems is also analyzed.Technical features and research status for different NAVSOP are represented in detail.Aiming at the problem that the single navigation system has poor robustness,the advantages of application fusing NAVSOP into an integrated navigation system are analyzed from the system operating mode and other aspects.Finally,the existing problems in this field are indicated,and development tendencies of NAVSOP are also expected.
作者
黄高明
景桐
田威
HUANG Gao-ming;JING Tong;TIAN Wei(College of Electronic Engineering,Naval University of Engineering,Wuhan 430033,China)
出处
《控制与决策》
EI
CSCD
北大核心
2019年第6期1121-1131,共11页
Control and Decision
基金
国家自然科学基金项目(61803379
61601491)
中国博士后科学基金项目(2017M613370
2018T111129)
关键词
导航系统
室内定位
机会信号
机会导航
协作导航
组合导航
navigation system
indoor positioning
signal of opportunity
opportunistic navigation
cooperative navigation
integrated navigation
