摘要
为了实现短波导航定位,根据电离层中短波传播特性,转换成几何模型,完成定位以及误差修正。仿真平台研究了在球面进行相交的几何推论,并通过推导实现了在仿真上获得球面相交的准确接收信息,以及通过研究出的算法处理,能够将接收信息转换成精确的发射信息,进行定位。并以射线追踪模型模拟短波传播的真实环境,研究电离层对传播的影响。仿真结果表明,仿真平台在无影响的情况下,能够实现精准定位,射线追踪的引入能对实际的导航定位有一定的指导意义,接收单位能依靠广播电台站接收信号实现精准定位。
The short wave navigation positioning can realize positioning and error correction by the mean of converting plane location to geometric model location according to the propagation characteristics of shortwave in the ionosphere.The geometric inference of intersecting on the spherical surface is studied with a simulation platform.The precise receiving information of the spherical intersection is obtained in simulation,which is realized by derivation.The received information can be transformed to precise transmitting information by processing of the studied algorithm,which is used for positioning.The ray tracing model is used to simulate the real environment of short wave propagation,so as to study the influence of ionosphere on shortwave propagation.The simulation experiment results show that the simulation platform can achieve precise positioning while there are no any influences,and provide a certain guidance for the actual navigation positioning if the ray tracing is introduced into it,which may make the receiving unit realize accurate localization only by relying on the signals received by the radio station.
作者
周安琪
张援农
杨国斌
ZHOU Anqi;ZHANG Yuannong;YANG Guobin(School of Electronic and Information,Wuhan University,Wuhan 430079,China)
出处
《现代电子技术》
北大核心
2019年第16期1-5,共5页
Modern Electronics Technique
基金
国家自然科学基金(41304127)~~
关键词
仿真平台
短波导航定位
无源定位
误差修正
球面相交
射线追踪
simulation platform
short-wave navigation positioning
passive positioning
error correction
spherical intersection
ray tracing
