CAJ | 학술논문

提出了一种基于地面数字电视广播单频网的定位方法，用于在城市密集城区和室内封闭区域等全球导航卫星系统信号较弱的地方提供辅助定位功能。该方法在初始化阶段通过GNSS计算出接收机当前位置，并以此来区分和锁定不同 DVB-T发射机的信号，实现热启动之后利用DVB-T信号导频子载波完成测距和定位。仿真实验表明：该方法在自由空间损耗模型下是可行的，并具有良好的效果。
제출료일충기우지면수자전시엄파단빈망적정위방법，용우재성시밀집성구화실내봉폐구역등전구도항위성계통신호교약적지방제공보조정위공능。해방법재초시화계단통과GNSS계산출접수궤당전위치，병이차래구분화쇄정불동 DVB-T발사궤적신호，실현열계동지후이용DVB-T신호도빈자재파완성측거화정위。방진실험표명：해방법재자유공간손모모형하시가행적，병구유량호적효과。
In this paper,a positioning method based on DVB-T single frequency networks (SFN)is proposed,which can be used for assisted positioning in GNSS-blocked areas such as dense urban or indoor areas.This method first computes the receiver’s position by GNSS dur-ing an initialization phase,which launches a hot start to distinguish and lock the signals from different emitters.After that,ranging and positioning by processing the scattered pilot subcar-riers of DVB-T signals can be realized.Simulation results show that this method is feasible in the free space loss model and has good performance.