4G网络信号在VSC系列导航中的应用  

Application of 4Gnetwork signal in VSC series navigation

作　　者：李纪章 季广申 李志明 路丽芳 杨文国 LI Jizhang;JI Guangshen;LI Zhiming;LU Lifang;YANG Wenguo

机构地区：[1]中国石油集团东方地球物理勘探有限责任公司装备服务处,河北涿州072750

出　　处：《物探装备》2023年第5期318-321,324,共5页Equipment for Geophysical Prospecting

摘　　要：在震源施工导航定位中,差分RTK信号从基准站到流动站的传输直接影响导航定位,用电台传输RTK信号会受到传输距离限制,而且信号极易受干扰。进而直接影响生产效率。应用4G网络传输RTK信号,就很好地解决了这个问题。本文从震源差分定位原理、4G网络OFDM传输技术、RTCM3.2数据格式,介绍了GPS RTK定位技术工作原理,RTCM3.2数据格式二进制数据结构,4G网络与4G网络的传输关键技术——ODFM技术(正交频分复用技术),差分RTK信号通过4G网络从基准站发送、流动站接收并解码,最终流动站用实时接收到的差分数据,实时解算修正自身坐标,转换成工程要求的平面坐标并达到厘米级定位精度。The transmission of the difference RTK(Real time kinematic)signal from base station to mobile station directly affects the navigation positioning in the seismic production of vibrator,using radio to transmit RTK signal will be restricted by the distance of transmission,and the signal is easily disturbed.In turn,the efficiency of production is directly affected.Using the 4Gnetwork to transmit RTK signal is a good solution to this problem.In this paper,from the vibroseis differential location principle,4Gnetwork OFDM transmission technology and RTCM3.2data format binary data structure.4Gnetwork and its transmission key technology-OFDM technology(Orthogonal Frequency Division Multiplexing)are introduced.The differential RTK signal is sent from the base station through the 4Gnetwork,The mobile station receives and decodes,and finally the mobile station uses the real-time received differential data to solve and correct its own coordinates in real time,convert it into the plane coordinates required by the project and achieve centimeter-level positioning accuracy.

关 键 词：差分RTK信号 RTCM3.2数据格式 4G网络 OFDM技术 

分 类 号：P228.4[天文地球—大地测量学与测量工程] P631.4[天文地球—测绘科学与技术]