共查询到20条相似文献，搜索用时 140 毫秒
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中国独立发展的北斗系统已经具备亚太地区的定位导航能力,为研究以北斗系统为主的车载导航技术的应用精度,采用伪距单点定位的方法分别对车载GPS,BD2,GPS\BD2 3种导航模式下的二维导航精度进行对比分析,结果显示定位精度分别为:3.66m,4.76 m,3.01 m,可以看出基于单点定位的北斗二维平面导航精度已达到5 m内,完全满足大众日常的出行要求。组合系统与GPS导航系统对比,组合系统具有更高的精度,是较好的导航模式。并基于visual studio平台编写定位软件,实现对车辆位置和速度信息的提取,监控车辆是否超速。 相似文献
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GPS与MEMS-IMU组合导航技术发展现状 总被引：4，自引：0，他引：4
介绍了硅微惯性测量单元（MEMS--IMU）的发展和应用情况,针对目前低成本、小型化的应用要求,分析了GPS和MEMS--IMU各自的优缺点和进行组合导航的可行性。提出了GPS与MEMS--IMU的组合模式,并介绍了组合导航计算机的工作原理和组合导航系统所涉及的关键技术。 相似文献
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在分析现有GNSS动态定位精度评估方法不足的基础上,提出区别于传统组合导航滤波算法的摄影/惯导组合定位技术。将多个摄影节点的位置观测量作为基准,利用最小二乘最优估计法统一解算捷联惯导误差参数。摄影/惯导组合定位方法的基本观测量、工作模式与卫星导航定位方法有本质区别;同时又具备高精度定位、高动态定位、高数据刷新率和差异数据观测量4个条件,十分适合作为GNSS动态定位性能测试的评估技术。通过在标志场内进行的摄影测量试验和摄影/惯导组合定位性能仿真试验,验证了摄影/惯导组合定位方法的可行性。该方法为首次提出,具有一定的科学价值。 相似文献
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The growth of innovative positioning-related services and applications within the wireless mass-market, and the green light
for the development and modernization of Global Navigation Satellite Systems (GNSS) catalyze the research activity in the
navigation field both at the system and user levels. In addition, different government institutions are working toward the
definition of navigation plans and regulations which will require accurate locations of mobile users in case of emergency (US E-911 law and the European
E-112 directive). From the technical standpoint, within every navigation/positioning system which will be available in the
near future, the user terminal will play a central role. In fact, if navigation signals from different sources are available,
the unique possibility to obtain the best navigation performance from the user perspective will be the employment of enhanced
smart receivers able to fuse different data. With this aim, the Software Defined Radio (SDR) technology can be successfully employed for the design of innovative navigation receivers. The main goal of this paper is
to present the overall SDR receiver architecture, focusing attention on reconfigurability and flexibility issues which are
guaranteed by the use of reprogrammable high-speed hardware (FPGA–Field Programmable Gate Array and DSP–Digital Signal Processor).
The direct benefit of such an implementation is the possibility to obtain a deep integration at the raw signal level between
GPS and the future Galileo; the interoperability issue among different systems is then solved at the receiver level.
Electronic Publication 相似文献
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The capability of human-computer interaction reflects the intelligent degree of mobile navigation system. The navigation data and functions of mobile navigation system are divided into system commands and non-system commands in this paper. And then a group of speech commands are abstracted. This paper applies speech recognition technology to intelligent mobile navigation system to process speech commands and does some deep research on the integration of speech recognition technology with mobile navigation system. The navigation operation can be performed by speech commands, which makes human-computer interaction easy during navigation. Speech command interface of navigation system is implemented by Dutty ++ Software, which is based on speech recognition system-Via Voice of IBM. Through navigation experiments, navigation can be done almost without keyboard, which proved that human-computer interaction is very convenient by speech commands and the reliability is also higher. 相似文献
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The capability of humancomputer interaction reflects the intelligent degree of mobile navigation system.The navigation data and functions of mobile navigation system are divided into system commands and non-system commands in this paper,And then a group of speech commands are abstracted.This paper applies speech recognition technology to intelligent mobile navigation system to process speech commands and does some deep research on the integration of speech recognition technology with mobile navigation system.The navigation operation can be performed by speech commands,which makes humancomputer interaction easy during navigation.Speech command interface of navigation system is implemented by Dutty Software,which is based on speech recognition system-Via Voice of IBM.Through navigation experiments,navigation can be done almost without keyboard,which proved that human-computer interaction is very convenient by speech commands and the reliability is also higher. 相似文献
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首先分析了目前传统外业调绘及外业调绘系统普遍存在的问题,随后提出了一种"基于北斗导航定位技术的通用型自然资源实地调查信息系统"的信息化技术解决方案,并对该方案的设计原则、总体架构进行了描述。最后,详细地分析了该技术方案涉及的关键技术。本文旨在为自然资源实地调查工作带来全新信息化作业模式,提出一套探索思路,贡献一份力量。 相似文献
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惯导/双星定位组合导航方案与精度分析 总被引：4，自引：0，他引：4
分析了惯导／双星定位组合的可行性;针对惯导／双星定位组合导航在飞行器上应用存在的有关问题进行了讨论,提出了可能的对策。通过不同方案的比较分析,给出了较为实用的惯导／双星定位组合导航系统设计方案,并对组合的时机和组合导航的精度进行了仿真计算和结果分析。结果表明,采用按精度要求进行惯导／双星定位位置组合,可以在某种程度上弥补双星定位导航系统为有源系统的缺点,并具有较高的精度。 相似文献
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针对面向泛在导航与位置服务的综合时空体系建设,各国都在探讨各类导航定位方式对卫星导航的补充和丰富,片上时空器件是其中一个重要的发展方向.通过分析万物互联时代的技术和应用发展趋势,提出了片上时空系统的概念,分析了其作为实现泛在时空服务的重要手段,将会随着大规模集成电路的不断发展在功能和集成度上快速提升,并且由于与物联网芯片天然的良好集成能力,拥有很大的市场需求,提出了发展综合时空体系网管系统支持片上时空系统信号融合集成以实现高性能,并提出了今后工作建议:应当加紧对微机电系统(MEMS)与高精度惯导融合、定位网络综合管理系统支持、多信号片上融合的研发,早日实现市场供给. 相似文献
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随着人类空间探测技术的不断发展,月球与深空探测已成为测绘遥感科学与技术的前沿和新战场。在多类型深空探测任务的驱动下,测绘遥感技术也得到了新的发展。本文结合国内外深空探测的各类任务,对地外天体环绕遥感测图、着陆导航遥感避障、巡视环境感知与视觉导航定位方面的研究现状和成果进行了系统总结;结合未来月球与深空探测任务需求,对深空遥感测绘技术的发展,包括地外天体海量全球遥感数据智能处理、全球控制网精化、月球南极精细三维形貌测绘、多传感器融合的着陆导航避障和巡视环境感知与定位等进行了探讨。 相似文献
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微PNT与综合PNT 总被引：2，自引：2，他引：0
综合定位导航授时是后GNSS(全球卫星导航系统)发展的必然趋势。本文侧重梳理微PNT发展需求和发展现状,分析与之关联的核心关键技术,论述综合PNT与微PNT的关系。强调综合PNT需要大量基础设施投入与建设,而微PNT侧重高技术传感器的集成应用。与现有文献思路不同的是,我们认为,为了实现各类传感器PNT输出结果的坐标基准统一和时间尺度一致,微PNT应包含多模GNSS和芯片级惯性导航和芯片级原子钟等定位定时组件,微PNT强调小型化、个性化、组合化服务终端;微PNT除各PNT组件的小型化外,还包括各组件的深度集成,各类数据的自适应融合和各组件的自主标校;当然,微PNT也强调各传感器信息的时空基准的统一。 相似文献