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饶文利 《测绘与空间地理信息》2021,44(3):164-169
室内三维技术是辅助室内人员快速定位导航、商业人员对室内业务统计分析决策、应急救援力量快速实施救援的重要手段.近年来,室外定位、导航、路径规划、可视化分析等技术已发展成熟,而室内位置服务需求(定位、导航、路径规划)正处于初始发展阶段.为快速推进室内三维技术发展,本文对目前市面上应用集中的几种室内三维定位技术方法进行了归纳和探讨,介绍了从不同角度对室内三维定位进行分类,各定位技术的原理和方法,以及基于室内三维原理与方法衍生出的主流室内定位技术,对比分析各定位技术的优缺点及在室内三维中的应用,总结了目前室内三维定位技术存在的问题与未来的研究方向. 相似文献
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随着室内定位技术的发展,可提供室内导航服务的手机应用具有巨大的商业前景。本文基于ArcRIS Runtime SDK for Android,利用Dijsktra算法实现了离线的路径规划功能,并给出了相关流程和核心部分的代码或api。最后以某地下车库为例,验证了该方法的可行性。 相似文献
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随着位置服务应用的深入和人们活动需求的拓展,对室内定位与导航服务的需求越来越迫切。本文通过对室内地图、导航数据和室内导航实现流程的研究,提出了室内导航数据模型与制作流程,并开展了室内导航APP的设计研发,在移动端实现了基于室内地图的基本地图操作、地图展示、路径规划导航和查询定位等基本功能。 相似文献
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面向室内位置服务中路径规划与导航的应用需求,提出一种基于栅格空间的通行区域模型及其自动提取算法。首先,在栅格模型基础上引入了相邻栅格和途经栅格,结合具体示例阐述了通行区域模型的基本原理;然后,根据室内地图数据特征,通过室内栅格模型初始化、通行区域初次提取和邻域融合,设计了通行区域的自动提取算法;最后,选取西单大悦城一楼室内地图数据进行了不同栅格尺度的通行区域自动提取和路径规划试验。结果表明,该算法针对走廊内存在障碍等复杂室内环境具有较好的适用性,并且通行区域模型相比网络模型的路径规划结果更加符合复杂室内环境的路径行走特征。 相似文献
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提出了一种构建室内行人通行网络的方法,利用矢量建筑图自动构建室内建筑、地标的可视关系,建立行人导航通行规则,支持室内导航路径规划。实验结果表明,此方法能够有效描述室内行人通行规则,并满足拓扑网络构建的实时性需求,减少大规模存储与维护室内路网的压力。在此基础上提出了一种多目标导航路径优化算法,该算法时间开销较低,能够实时地进行路径规划,得到的最优路径与最短路径相比具有更高的地标可见性和覆盖率。 相似文献
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柳叶 《测绘与空间地理信息》2021,44(12):135-137
随着社会的进步,人们对于位置信息服务的需求越发强烈,普通的室外定位导航已经不能满足人们的出行需求,迫切需要一种安全可靠的室内外导航服务,特别是在大型的超市、商场、停车场、机场等公共场所,将室外和室内定位导航技术相结合,可以更好地为人们提供位置和导航服务,提高人们的出行效率.本文基于An-droid平台,以采集的实验区室内数据建库,利用高德地图SDK设计并实现了室内外定位导航应用,该应用实现了地图浏览、室内定位、室外定位、室内查询、室外查询、室内路径规划、室外路径规划、室内外路径规划等多种功能,方便了人们出行. 相似文献
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采用Landsat TM数据分析了阿克苏河—塔里木河断面水质污染状况,通过波段的DN值和常规监测数据建立能反映水质状况的
污染物监测模型。结果发现,将2000年常规监测数据代入模型后,与遥感数据的结果基本吻合| 重建阿克苏河—塔里木河的连续水体
污染变化曲线,得出污染物浓度随着远离上游而增加。 相似文献
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ZHAN F. Benjamin 《地球空间信息科学学报》2011,(1)
Although it is well known that coseismic gravity changes take place during an earthquake, previous research has not yielded convincing evidence demonstrating that significant gravity changes occur before large earthquakes. Furthermore, even if we suspect that gravity changes occur before large earthquakes, we have yet to demonstrate how to consistently observe these changes for useful earthquake forecast that would bring benefits to society. We analyzed ground gravity survey data obtained in 1998, 2000, 200... 相似文献
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Piyoosh Rautela Ramesh Chandra Lakhera 《International Journal of Applied Earth Observation and Geoinformation》2000,2(3-4)
The area around Sataun in the Sirmur district of Himachal Pradesh, India (falling between the rivers Giri and Tons; both tributaries of the Yamuna River) was studied for landslide vulnerability on behalf of the inhabitants. The study was made using extensive remote sensing data (satellite and airborne). It is well supported by field evidence, demographic and infrastructural details and aided by Geographic Information System (GIS) based techniques. Field observations testify that slope, aspect, geology, tectonic planes, drainage, and land use all influence landslides in the region. These parameters were taken into consideration using the statistical approach of landslide hazard zonation. Using the census data of 1991, vulnerability of the populace to the landslide hazard was accessed. As most of the infrastructure in the region is concentrated around population centres, population data alone was used for vulnerability studies. 相似文献
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GNSS系统及其技术的发展研究 总被引:3,自引:1,他引:2
阐述了国际上卫星导航系统的总体发展,对美、俄、欧、中的四大全球系统,以及相关的区域系统和增强系统进行了简单的介绍,研究分析了GNSS系统及其技术的发展趋势,同时分析了我国Compass全球系统面临的机遇和挑战,并提出了我国未来工作的建议. 相似文献
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“4D”技术及其应用 总被引:13,自引:0,他引:13
介绍“4D”(即数字地面模型、数字正射影像、数字栅格地图和数字线划地图)系列产品的生产流程、关键技术、及其在耕地保护、防灾减灾救灾和城市规划等方面的应用方法。 相似文献
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《International Journal of Digital Earth》2013,6(1):66-87
Abstract Virtual Australia is not a well-defined or agreed concept. This discussion paper conceptualises Virtual Australia as a ‘virtual [digital] model containing and representing all non-trivial objects and their contextual environment – from blue sky to bedrock – in real world Australia’. It describes a scenario for Virtual Australia, one or two decades from now, in which the locations and conditions of non-trivial objects and their environment are updated automatically through a combination of remote sensing and wireless communication technologies in support of a ‘Supranet’. It then examines the concept of the ‘Supranet’ – a pervasive information network based largely on wireless technology linking the physical world to a virtual model in real time – and develops and discusses three principal characteristics of the Supranet: the ability to have or collect specific information (know); the ability to process information (think); and the ability to communicate that information. If, in the near future, any or all non-trivial devices are to some extent able to know, think and communicate, the potential for object autonomy will be realised. 相似文献
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Toward seamless indoor-outdoor applications: Developing stakeholder-oriented location-based services
Kohei OGAWA Edward VERBREE Sisi ZLATANOVA Naohiko KOHTAKE Yoshiaki OHKAMI 《地球空间信息科学学报》2011,14(2):109-118
Location-Based Services (LBS),an emerging new business based on smartphone and mobile networks,are becoming more and more popular.Most of these LBSs,however,only offer non-seamless indoor/outdoor applications and simple applications without giving stakeholders the chance to play an active role.Our specific aim is to solve these issues.This paper presents concepts to solve these issues by expanding the Open Location Services Interface Standard (OpenLS) to allow seamless indoor/outdoor positioning and to extend the content of the services to include information recommended by stakeholders. 相似文献
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李志宽 《测绘与空间地理信息》2009,32(2)
3维技术以其直观、眩目的表现力深受人们喜爱.利用3S技术和Skyline开发平台,可以构建大型企业3维地理信息系统,以满足企业设计部门和资产管理部门对基础地理信息的需求.兼容原有2维系统的总图3维信息系统,将为企业的日常管理、设计施工、分析统计、规划决策等提供更加可靠、直观、多层次、多功能的综合服务信息. 相似文献