共查询到20条相似文献，搜索用时 974 毫秒
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介绍了一种基于移动嵌入式GIS的地下管线野外数据采集系统的功能设计和具体的实现方法，采用RTK定位技术和GSM通信技术实现厘米级定位精度，为地下管线系统的图形绘制及生产管理提供了一种快速准确高效的方法。 相似文献
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通过合理地组织与存储数据,在嵌入式硬件环境下,融合嵌入式系统、GPS、GIS与摄影测量技术等多种技术,将移动计算技术和影像服务应用到传统的地理信息服务中,以实现移动目标的定位和导航等功能,并构建嵌入式街景导航系统。 相似文献
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《测绘科学》2020,(5)
针对偏远的高原区域无CORS基站和无线基站覆盖,信号弱,实际定位能力完全依靠GPS的问题,该文设计了一种基于移动GIS辅助定位系统的终端技术设备,该系统采用模块化的移动GIS服务,主要包括行业基础服务数据层、基础GPS定位服务层、投影运算层、移动GIS交互采集层等模块,通过将移动终端GPS模块获得的定位数据和移动GIS模块中存储的未偏移的数据结合起来实现更高精度的定位。本文在中国地质大学(武汉)东校区对该方法进行了模拟实验,结果表明该技术大大降低了移动终端GPS的定位误差,实现了对观测点的准确定位。借助该系统,可以提高野外人员采集数据的准确性及后期制作数据的精度,有效提高野外工作的效率和质量。 相似文献
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刘凤忠 《测绘与空间地理信息》2014,(9):76-78
基于CORS的地质野外数据采集系统利用CORS技术、移动GIS技术等技术手段,旨在实现野外数据调查的高精度、数字化采集,提高野外调查工作效率和信息化程度,实现野外数据采集、数据管理、数据处理的野外调查工作流程的数字化。同时,利用CORS网络差分定位技术实现分米级定位;系统对野外调查所需的前期成果数据和现场获得的各种资料进行一体化管理,为野外调查工作人员提供丰富的参考信息,便于对调查内容进行详实的描述和准确记录。 相似文献
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移动GIS是建立在移动终端条件下,提供移动中的、分布式的、随遇性的移动地理信息服务的GIS,是一个集GIS,GPS,移动通信(GSM/GPRS/CDMA)三大技术于一体的系统,通过GIS完成空间数据管理和分析,GPS进行定位和跟踪,利用移动设备完成数据获取功能,借助移动通信技术完成图形、文字、声音等数据的传输,这也是越来越多石油、天然气采用移动GIS用于日常巡检的根本原因。 相似文献
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福建省国土资源移动执法监察系统基于Arc GIS、Android(IOS)平台来研发,应用GIS、GPS、RS等技术,构建了移动执法手机客户端、数据对接及短信发送系统和移动执法监管平台,主要实现了快速报案、快速处置、巡查管理、案件管理、轨迹管理、监管考核等功能。通过系统应用大大提高了国土资源执法监察工作效率。 相似文献
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介绍了基于ArcGIS Mobile技术的移动设备数据采集、更新系统的开发技术和实现方法;实现了空间数据浏览、查询、编辑及多媒体数据的采集、GPS导航以及与数据库同步更新等功能。 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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Monitoring drought dynamics in the Aravalli region (India) using different indices based on ground and remote sensing data 总被引：5，自引：0，他引：5
C. Bhuiyan R.P. Singh F.N. Kogan 《International Journal of Applied Earth Observation and Geoinformation》2006,8(4):289-302
The hard-rock hilly Aravalli terrain of Rajasthan province of India suffers with frequent drought due to poor and delayed monsoon, abnormally high summer-temperature and insufficient water resources. In the present study, detailed analysis of meteorological and hydrological data of the Aravalli region has been carried out for the years 1984–2003. Standardised Precipitation Index (SPI) has been used to quantify the precipitation deficit. Standardised Water-Level Index (SWI) has been developed to assess ground-water recharge-deficit. Vegetative drought indices like Vegetation Condition Index (VCI) and Temperature Condition Index (TCI) and Vegetation Health Index (VHI) have been computed using NDVI values obtained from Global Vegetation Index (GVI) and thermal channel data of NOAA AVHRR satellite. Detailed analyses of spatial and temporal drought dynamics during monsoon and non-monsoon seasons have been carried out through drought index maps generated in Geographic Information Systems (GIS) environment. Analysis and interpretation of these maps reveal that negative SPI anomalies not always correspond to drought. In the Aravalli region, aquifer-stress shifts its position time to time, and in certain pockets it is more frequent. In comparison to hydrological stress, vegetative stress in the Aravalli region is found to be slower to begin but quicker to withdraw. 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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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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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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自动车辆定位导航系统中传感器的误差分析 总被引：1，自引：0，他引：1
对国界定位导航系统中几种常见的辅助传感器所产生的误差进行了分析，导出了不同传感器的误差模型。这些误差模型是估计车辆位置的扩展卡尔曼滤波器的基础，同时也为选择适当的传感器提供了理论根据。 相似文献