浅谈无人机航空摄影测量在盘煤中的应用

<正>近年来,无人机的普及给航空摄影测量工作带来了更大的便利。因而,研究无人机航空摄影测量技术在煤堆测量中的应用方法,以解决采用传统方法作业过程中存在的外业工作量大、效率低、费用高,内业计算复杂、精度低等问题,并通过实例验证无人机航空摄影测量在煤堆测量中的精度和效率,成为航空摄影测量中的常态工作。     

航空摄影测量及其在数字矿山建设中的应用

文章通过对航空摄影测量技术和数字矿山建设的基本情况进行分析,重点介绍了航空摄影测量在数字矿山建设中的应用,为数字矿山的发展提供了一个新的方向和条件。航空摄影测量技术是一个综合系统性的复杂技术,具有科技含量高、工作效率快、应用范围广等优点,为数字矿山的建设做出了贡献。通过对航空摄影测量及其在数字矿山建设中的应用研究,以期促进航空摄影测量技术和数字矿山建设的共同发展。     

关于空间信息获取技术的分析

空间3维信息获取技术与应用正在世界范围内蓬勃发展,新理论、新技术、新方法层出不穷,新思维、新方向更推动了地理信息产业不断向前发展.航空摄影技术与摄影测量技术;机载与地面激光扫描、地面移动测量与GPS定位等传感器的精度与速度都有了明显的提高.无人机、飞艇等低空获取技术在城市空间信息的获取和更新方面发挥了积极的作用.本文对数字城市建设中的信息获取技术进行了讨论,并对航空摄影、机载3维激光、无人机、飞艇等3维信息获取方法进行了阐述,立足关注自主创新产品,突出各个领域技术合作与互补,推动数字城市建设更上新台阶.     

无人机在正射影像图制作中的应用——以罗格生态科技园为例

采用无人机进行航空摄影,可以使正射影像图的制作,获得良好的时间效益与经济效益。本文以罗格生态科技园无人机影像制作为例,从航空摄影、像控点测量、空中三角测量到最后的影像制作,阐述了无人机在正射影像图制作中的应用。     

中航时无人机系统在应急测绘中的应用探讨

针对洪涝、山体滑坡、泥石流、地震等自然灾害灾后应急测绘数据获取难的问题,文章以CH-4无人机系统为例,提出运用具有快速获取大范围高分辨率影像能力的中航时无人机航空摄影测量系统进行数据获取。该系统在广西某区域进行了试验,结果表明,CH-4无人机应急测绘系统可以同时获取光学影像、雷达影像和视频数据等,且精度满足要求,可广泛应用于自然资源监测和管理、国土空间规划、森林火灾隐患点排查、海洋溢油监测等领域。     

无人机航测技术在长江航道整治工程中的应用

为提高无人机航空摄影测量的精度与效率,建立一套科学的航空摄影测量方法,提出了在航测过程中需要注意的因素与实施方案,并将之应用于长江航道整治工程的航测工作中。超轻型固定翼无人飞机数码航空摄影测量具有高分辨率、高成像质量、高几何精度,以及便捷、低成本等特点。本文通过荆江航拍成果的实例验证了前期设计方法的有效性,并将获取的航摄成果用于工程的设计、审核以及利用空间信息技术将获取的离散高程信息数据建立三维模型展示荆江河段的宏观状态等业务中。     

基于ADS100数字航空摄影测量系统的航线设计研究

详细介绍了IMU/GPS辅助ADS100数字航空摄影测量系统的基本参数,对ADS100航线设计的问题进行了研究探讨,总结出ADS100数字航空摄影测量系统航线设计技术特点。     

无人机像控布设对影像精度的影响

正近年来,随着无人机航测技术的发展,因其低成本、快速高效、使用机动、生产周期短的众多优势在测绘行业中广泛使用,但是像控测量作为获取地理信息数据的不可或缺的关键工序,相比传统布航测的像控点方法需更多的像控点,且施测不便,野外工作量较大。针对该难题,本文首先分析比较了传统航空摄影测量与无人机航测的差异和优势,结合多个项目的生产实践,利用实例数据,通过不同布点方案对影像定位精度的分析对比和总结,提出了适宜小区域、高精度的无人机航测优化布点方案。     

面向智能查违的北斗无人机低空感知与服务系统

针对如何解决对城建中违章建筑进行全面有效监管的问题,设计研发了一种应用北斗无人机低空感知与服务技术的智能查违系统。利用北斗无人机搭载航空摄影设备获取城市定点区域遥感数据,通过实时数据通信传输模块将信息上传至多功能遥感数据处理平台进行动态处理,实现违章建筑的持续变化监测和查询,为监管部门提供数据支撑和决策依据。     

基于DMC的航空摄影测量误差分析和质量控制方法

基于DMC的航空摄影测量技术是一门现代综合科学应用技术,其测量效率、测量误差以及质量控制直接影响该技术的应用和发展。本文通过对数字航摄仪进行简单介绍、基于DMC航空摄影测量效率分析、基于DMC航空摄影测量误差分析以及基于DMC航空摄影测量的质量控制研究等方面进行了综合阐述,希望能够对研究和使用该技术的企业和单位带来有效帮助。     

Preliminary study on plasma membrane fluidity of Psychrophilic Yeast Rhodotorula sp.NJ298 in low temperature

The ability of cell to modulate the fluidity of plasma membrane was crucial to the survival of microorganism at low temperature. Plasma membrane proteins, fatty acids and carotenoids profiles of Antarctic psychrophilc yeast Rhodotorula sp. NJ298 were investigated at -3 ℃, 0 ℃ and 8 ℃. The results showed that plasma membrane protein content was greater at -3 ℃ than that at 8 ℃, and a unique membrane polypeptide composition with an apparent molecular mass of 94.7 kDa was newly synthesized with SDS-PAGE analysis; GC analysis showed that the main changes of fatty acids were the percentage of unsaturated fatty acids (C18∶ 1 and C18∶ 2) and shorter chain saturated fatty acid (C10∶ 0) increased along with the decrease of the culture temperature from 8 ℃ to -3 ℃; HPLC analysis indicated that astaxanthin was the major functional carotenoids of the plasma membrane, percentage of which increased from 54.6±1.5% at 8 ℃ to 81.9±2.1% at -3 ℃. However the fluidity of plasma membrane which was determined by measuring fluorescence anisotropy was similar at -3 ℃, 0 ℃ and 8 ℃. Hence these changes in plasma membrane's characteristics were involved in the cellular cold-adaptation by which NJ298 could maintain normal plasma membrane fluidity at near-freezing temperature.     

Information for authors

正1 Aims and Scope Advances in Polar Science(APS)is an international,peer-reviewed journal jointly sponsored by the Polar Research Institute of China and the Chinese Arctic and Antarctic Administration.APS is a comprehensive academic journal dedicated to presentation of multi-disciplinary achievements in Arctic and Antarctic expeditions and research.Its primary purpose     

JOURNAL OF OCEAN UNIVERSITY OF CHINA

<正>Copyright Submfnion of a roanusatpt inks:that the work described has not been published before(exoept In the form of an abstrW or as part of a published lecture,review,or thesis);that it is not under consideration for publication elsewhere that its publication has been approved by ail     

Information for Authors

<正>The Journal of Ocean University of China(Oceanic and Coastal Sea Research)is a comprehensive academic quarterly sponsored by the Ocean University of China,published one volume per year.This journal is devoted to the publication of the theoretical and applied research results on oceanography and marine fisheries.The fieldcovered include the physical,chemical,biological,geo-     

Hydraulics and Hydrology in Mountain Areas

<正>The 35th IAHR World Congress was held in Chengdu,China from September 8 to September 132013.The title of the conference was:"The Wise Finds Pleasure in Water:Meandering through Water Science and Engineering".During the congress,1239 papers were presented in 139sessions for oral presentations and 7 sessions for poster presentations.After the Congress,a Committee was appointed to select some of the best papers presented at the Congress for publication,after a     

Sea ice thickness measurement in spring season in Bothnian Bay using an electromagnetic induction instrument

As an important component of the cryosphere,sea ice is very sensitive to the climate change.The study of the sea ice physics needs accurate sea ice thickness.This paper presents an electromagnetic-induction(EM) technique which can be used to measure the sea ice thickness distribution efficiently,and the successful application in Bothnian Bay.Based on the electromagnetic field theory and the electrical properties of sea ice and seawater,EM technique can detect the distance between the instrument and the ice/water interface accurately,than the sea ice thickness is obtained.Contrastive analysis of the apparent conductivity data obtained by EM and the value of drill-hole at same positions allows a construction of a transformable formula of the apparent conductivity to sea ice thickness.The verification of the sea ice thickness calculated by this formula indicates that EM technique is able to get reliable sea ice thickness with average relative error of only 12%.The statistic of all ice thickness profiles shows that the level ice distribution in Bothnian Bay was 0.4-0.6 m.     

Thermohaline structure inhomogeneity associated with polynia at the northern margin of Emery Ice-shelf

Based on the hydrographic data in austral summer during the 22nd Antarctic Expedition of China(2005/2006),some features can be found about the northern margin of Emery ice shelf as follows.The heat content in the surface layer(0-50 m) at the eastern end and the western end of the ice-shelf margin is much higher than that at the middle.The upper mixing-layer depth and the seasonal thermocline depth at the middle of the ice-shelf northern margin are much shallower than those at the both ends.However there is much less difference between the middle and the ends in the bottom layer.The remote sensing photos show that the inhomogeneity in the surface-layer water is closely related to the spatial distribution of the floes and polynia in the area.     

Phylogenetic analysis of cultivable bacteria isolated from Arctic sea-ice

Phylogenetic analysis based on 16S rDNA of 8 strains of cultivable bacteria isolated from Arctic sea-ice was studied.The results showed that strain BJ1 belonged to genus Planococcus,which was a genus of low mole percent G C gram-positive bacteria;strain BJ6 belonged to genus Burkholderia of β-proteobacteria and the rest 6 strain all belonged to γ-proteobacteria,of which strain BJ8 was a species of Pseudoalteromonas,strain BJ2-BJ5 and BJ7 were members of genus Psychrobacter.Phylogenetic analysis also indicated that bacteria of genus Psychrobacter of the isolates formed a relatively independent phylogenetic cluster in comparison with other bacteria belonged to genus Psychrobacter.     

Information for authors

正1 Aims and Scope Advances in Polar Science(APS)is an international,peer-reviewed journal jointly sponsored by the Polar Research Institute of China and the Chinese Arctic and Antarctic Administration.APS is a comprchensive academic journal dedicated to presentation of multi-disciplinary achievements in Arctic and Antarctic expeditions and research.Its primary purpose is to publish achievements in fundamental research,applied