摘要
介绍了现有的电视基础设施以及GPS定位技术,论述了TV-GPS系统如何利用地面广播电视辅助信号进行定位的新技术,给出了TV-GPS系统的原理与机制。该系统充分融合现有的TV和GPS技术,使用未经修改的广播电视信号,在全球定位系统最受挑战的室内和市区进行定位和定时。仿真显示接收到的可用GPS卫星颗数越多,定位误差越小,从而可以利用TV信号来弥补高楼耸立的边缘地带GPS定位的缺陷,同时也提出了TV与GPS算法融合模型框图。实现了室内和室外快速、可靠、精确的无缝融合定位技术。
The existing TV infrastructure is described, as well as television GPS positioning technology. The exposition of the new technology to auxiliary location by using land-based radio and television signals, and the principle and mechanism of the TV-GPS system are given. The system is the full integration of the existing TV and GPS technology, by using unmodified broadcast TV signals, positioning and timing in the most challenging urban and indoor of GPS. The simulation results show that the more satel- lite stars of GPS are used, the less the position errors appear, which can make use of TV signals to compensate for the high building between GPS edges defects. Meanwhile, a TV and GPS integration algorithm model diagram is proposed. The indoor and outdoor fast, reliable, precise positioning technology of seamless integration is also realized.
出处
《电视技术》
北大核心
2009年第8期54-56,76,共4页
Video Engineering
基金
重庆市教委自然科学基金项目(KJ080520)
重庆市科委自然科学基金项目(CSTC
2008BB2412)
