共查询到20条相似文献,搜索用时 78 毫秒
1.
2.
基于Landtech掌上电脑三、四等水准测量电子手簿的开发 总被引:1,自引:0,他引:1
王克峰 《测绘与空间地理信息》2010,33(3):192-194
探讨了基于Landtech掌上电脑的三、四等水准测量电子手簿开发的基本原理和方法,提出了应用TURBOPASCAL语言编制三、四等水准测量电子手簿的实现方法,并对开发中的关键技术进行了阐述。 相似文献
3.
重新设计了手簿的硬件平台,提出了基于嵌入式Linux的测量手簿软件平台方案,移植linux 2.6.11内核及文件系统到该平台,开发了GPS数据采集系统应用程序. 相似文献
4.
一种基于Android平台数据采集系统的设计与实现 总被引:1,自引:0,他引:1
针对快速变化的地理环境实体的数据采集作业,首先基于Android平台的二次开发技术进行了研究,分析了Android平台的开发框架和开发环境搭建流程;然后,针对数据采集作业进行了需求分析,设想了一种基于Android平台的数据采集系统,提出了该系统的逻辑设计和功能模块设计;最后,对所设想的系统进行了技术验证和效果实现。该系统的设计与实现对数据采集作业方式具有重要的技术参考价值。 相似文献
5.
国内外的研究者对地籍管理信息系统和移动平台的研究都有了飞速的跨越与发展,但是关于两者结合的研究还处在初级阶段。本文结合已有的地籍信息化技术和现如今很热门的Android系统二次开发技术,对基于Android平台的地籍管理信息系统进行了初步研究,并取得了相应的成果。本文以苏州市藏书镇地籍管理信息为例,基于Android平台研发地籍管理系统,实现了大部分日常应用功能,验证Android平台的地籍管理系统的可行性与适用性。 相似文献
6.
7.
田泽海 《测绘与空间地理信息》2014,(3):164-166,169
通过对利用网络RTK控制点进行放线测量的现有作业模式的总结,提出了一些质量控制技术的改进。通过测量手簿的集成和基于PDA的放线测量程序的二次开发,实现了由PDA放线测量程序对GZCORS-RTK数据进行质量控制。与以前的作业模式的比较,质量得到有效控制,效率得到提高。 相似文献
8.
针对水准测量实习操作步骤烦琐,学生难以掌握的问题,本文研究开发了具有观测步骤指导和提示、录入数据正确性检核等功能的电子手簿。本手簿能够指导并提示学生按照水准测量规范进行观测、记录、计算和限差检核。与工程应用型电子手簿自动确定限差、自动进行计算不同,本电子手簿要求学生自主确定限差、自主进行计算,再手工录入手簿,由手簿自动检核录入值的正确性,给出错误提示信息,从而保证学生确实地掌握限差的概念和每一录入值的计算方法,加深对课堂知识的理解,提高水准测量实践教学质量。 相似文献
9.
随着运行DOS系统的HP100、HP200等记簿机型的淘汰,探讨了基于Landtech掌上电脑的短程测距记簿程序开发的基本原理和方法,提出了应用TURBO PASCAL语言编制短程测距记簿程序的实现方法,并对开发中的关键技术进行了阐述。 相似文献
10.
《武汉大学学报(信息科学版)》2001,26(1):92
成果名称:地面控制与施工测量工程一体化自动化系统研究主研人员:张正禄 黄金森 黄全义 罗年学 巢佰崇 郭际明 艾光辉 李扬文 周京春成果简介:本项目研究将测绘学、计算数学、计算机科学、系统论、光电技术等学科的理论技术集成在一起,研制出了一套地面控制与施工测量内外业作业及数据处理一体化、自动化软硬件系统,简称“科傻”系统。主要研究成果包括:1)自行设计研制的专用于外业数据采集的掌上型电脑RD_EB作为外业电子手簿。内置与DOS兼容的汉化操作系统,自行研制了先进的电源管理系统以延长电子手簿的连续工作时间;创造… 相似文献
11.
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
12.
13.
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
14.
15.
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
16.
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
17.
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
18.
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
19.
“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
20.
《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