基于BDS和时空数据的嵌入式系统精准定位  

Precise positioning of embedded system based on BDS and spatio-temporal data

作　　者：王燕[1] WANG Yan(School of Sciences and Information Science,Qingdao Agricultural University,Qingdao 266109,Shandong Province,China)

机构地区：[1]青岛农业大学理学与信息科学学院,山东青岛266109

出　　处：《信息技术》2022年第10期102-107,共6页Information Technology

摘　　要：嵌入式北斗导航系统容易受到地理环境的限制,导致局部精准定位准确度偏低。对此,针对嵌入式系统,设计了基于北斗导航和时空大数据的精准定位方法。建立北斗导航系统单独使用的三个伪距方程,得到用户端位置坐标;在用户端周围布设伪卫星,通过伪距方程获取时空大数据;拟合伪卫星时空大数据与北斗导航的定位结果,在线性化处理后,通过误差补偿完成精准定位目标。结果表明:在北斗导航和时空大数据联合定位下,三维位置精度因子要小于单独使用北斗导航定位下的三维位置精度因子,说明文中方法能够实现精准定位。Embedded Beidou navigation system is prone to be limited by geographical environment, resulting in low accuracy of local precise positioning. In this regard, an accurate positioning method based on Beidou navigation and spatio-temporal big data is designed for embedded system. Three pseudo-range equations for Beidou navigation system are established to obtain the coordinates of the user’s position. Pseudo-satellites are set around the client to obtain spatio-temporal big data by pseudo-range equation. After the linear process, the positioning results of pseudo-satellite spatio-temporal big data and Beidou navigation are fitted to achieve accurate target positioning through error compensation. The results show that the accuracy factor of 3 D position is smaller than that of 3 D position using Beidou navigation and spatio-temporal big data combined positioning, indicating that the proposed method can achieve accurate positioning.

关 键 词：北斗导航系统 时空大数据 伪卫星 误差补偿 精准定位 

分 类 号：TP27[自动化与计算机技术—检测技术与自动化装置]