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高精度时间传递与精密测定轨研究室主要开展高精度时间传递和精密测定轨技术及其相关科学研究。
《广州市贯彻落实(计量发展规划)的实施意见》印发
计量发展规划 光谱仪 精密测量技术
2023/9/6
为全面贯彻落实《国务院关于印发计量发展规划(2021—2035年)的通知》(国发〔2021〕37号)和《广东省人民政府办公厅关于印发〈广东省计量发展规划(2022—2035年)〉的通知》(粤办函〔2022〕351号)要求,进一步夯实计量基础,提升计量能力和水平,推动建设现代先进测量体系,促进全市经济社会高质量发展,组织起草了《广州市贯彻落实<计量发展规划(2021—2035年)>的实施意见》(下称...
北京科技大学机械工程学院机械制造及自动化系
北京科技大学机械工程学院 机械制造及自动化系
2022/8/4
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内蒙古大学交通学院道路工程系自治区级精品课程(图)
内蒙古大学交通学院道路工程系 自治区级 精品课程 道路建筑材料 工程测量 路基路面工程
2023/2/16
自动电位滴定法精密测定镎含量
镎 自动电位滴定 重铬酸钾
2020/1/17
镎是制备238Pu的重要原料。具有明确、清晰溯源性的镎的精密测定技术对于镎提取工艺研究和标准物质研制具有重要意义。本文提出了一种精密测定镎含量的新方法,即在1.0 mol/L硫酸体系中,采用氧化银(Ⅱ)将镎氧化至Np(Ⅵ),过剩氧化银(Ⅱ)采用氨基磺酸破坏,采用Fe(Ⅱ)还原Np(Ⅵ)至Np(Ⅳ),过剩Fe(Ⅱ)采用标准重铬酸钾氧化的方式进行镎滴定条件研究,并确定了最佳实验条件,建立了自动电位滴定...
围绕均质地基路堤的稳定性问题,提出一种条分稳定安全系数计算及临界滑动面确定的方法。基于3个维度的自变量确定圆弧滑动面的位置,并给出了各维度的取值范围;以潜在滑动体整体为研究对象并以其为积分域,进行条分的整体极限平衡分析,推导了安全系数的计算函数表达式;基于二元函数的极值条件,将降维度求极小值与迭代计算相结合,确定了临界滑动面的位置;编制了计算程序并通过均质土坡和路堤边坡两个算例将该方法和条分法的结...
A NOVEL TECHNIQUE FOR PRECISION GEOMETRIC CORRECTION OF JITTER DISTORTION FOR THE EUROPA IMAGING SYSTEM AND OTHER ROLLING-SHUTTER CAMERAS
Europa photogrammetry jitter geometric correction active-pixel sensors
2018/5/14
We use simulated images to demonstrate a novel technique for mitigating geometric distortions caused by platform motion (“jitter”) as two-dimensional image sensors are exposed and read out line by lin...
ERROR ANALYSIS AND VALIDATION FOR INSAR HEIGHT MEASUREMENT INDUCED BY SLANT RANGE
InSAR DEM Slant Range Error Simulation Validation SRTM TanDEM-X
2018/5/16
InSAR technique is an important method for large area DEM extraction. Several factors have significant influence on the accuracy of height measurement. In this research, the effect of slant range meas...
DIGITAL IMAGE CORRELATION FROM COMMERCIAL TO FOS SOFTWARE: A MATURE TECHNIQUE FOR FULL-FIELD DISPLACEMENT MEASUREMENTS
Close range photogrammetry Digital Image Correlation Full-field displacement measurement Commercial and Free and Open Source Software
2018/6/4
In the last few decades, there has been a growing interest in studying non-contact methods for full-field displacement and strain measurement. Among such techniques, Digital Image Correlation (DIC) ha...
DIFFERENTIAL SAR INTERFEROMETRY TECHNIQUE FOR CONTROL OF LINEAR INFRASTRUCTURES AFFECTED BY GROUND INSTABILITY PHENOMENA
linear infrastructures landslides monitoring DInSAR surface displacements damage
2018/4/18
The Italian territory is strongly affected by ground instability phenomena and the occurrence of geological events, such as landslides and subsidence, is one of the main causes of damage to linear inf...
DIFFERENTIAL SAR INTERFEROMETRY TECHNIQUE FOR CONTROL OF LINEAR INFRASTRUCTURES AFFECTED BY GROUND INSTABILITY PHENOMENA
linear infrastructures landslides monitoring DInSAR surface displacements damage
2018/5/8
The Italian territory is strongly affected by ground instability phenomena and the occurrence of geological events, such as landslides and subsidence, is one of the main causes of damage to linear inf...
基于切比雪夫扩频序列的循环测量矩阵构造算法
压缩感知 混沌序列 分布式循环 测量矩阵
2018/7/4
在分布式多节点应用场景中, 针对需要产生大量混沌序列来构造测量矩阵造成资源和通信带宽浪费的缺点,提出了一种基于切比雪夫扩频序列的分布式循环测量矩阵构造算法。利用符号函数把由切比雪夫混沌函数产生的序列进行二值化得到扩频序列,选择一定长度的序列作为一行循环生成测量矩阵,并证明了由循环生成的序列满足贝努利分布。选取一维信号和二维图像进行仿真实验,结果表明相比于切比雪夫贝努利矩阵、贝努利矩阵、高斯矩阵和罗...
This paper presents the DTM accuracy derived from JERS-1 SAR Interferometry based on the branch cut method. The target area were selected FUJI and FUGEN mountain in the volcanic mountaions. The accura...
For a better direction of the development of global environmental databases
Environmental variables Global Database
2016/5/23
This paper is a review of the activity of the ISPRS WG IV/6 which aims to find better direction of the development of global database. There are some problems in developing global databases for mappin...