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Precise point positioning and its application in mining deformation monitoring

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中国有色金属学会会刊：英文版 2011年第S3期21卷 499-505页

作者： XU Chang-hui1, 2, WANG Jin-ling2, GAO Jing-xiang1, WANG Jian1, HU Hong1 1. school of Environment and spatial information, China university of Mining and Technology, Xuzhou 22116, China 2. school of surveying and spatial information systems, university of new south wales, sydney 2052, australia [a] school of Environment and spatial information China University of Mining and Technology Xuzhou 22116 China [b] school of surveying and spatial information systems University of New South Wales Sydney 2052 Australia

Precise point positioning (PPP)-based deformation monitoring scheme is presented for the use in mining deformation monitoring. Within the solutions of daily observation, outliers are detected and removed to avoid any potential misinterpretation of the results and then the deformation can be extracted by the coordinate differences between the two consecutive solutions. Meanwhile, because of the special location of a rover station in mining areas, the satellite geometry may be insufficient for a reasonable PPP solution, and the multipath impact an also be significant. Therefore, it is necessary to predict the satellite geometry before any daily observation. To evaluate the ability of extracting the deformation using the PPP-based method, various quality measures were introduced. The results of three datasets of the same station show that the precision of deformation monitored by PPP can reach up to cm level and even mm level.

关键词： precise point positioning deformation monitoring outlier identification geometry multipath

Methods of 3D map storage based on geo-referenced image database

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中国有色金属学会会刊：英文版 2011年第S3期21卷 654-658页

作者： YUAN Zhan-liang1, 2, LI Xun1, WANG Jin-ling1, YUAN Qi-qi1, XU Dan2, DIAO Jing-jing2 1. school of surveying and spatial information systems, university of new south wales, nsw 2032, australia 2. school of surveying and Mapping, Henan Polytechnic university, Jiaozuo 454000, China [a] school of surveying and spatial information systems University of New South Wales NSW 2032 Australia [b] school of surveying and Mapping Henan Polytechnic University Jiaozuo 454000 China

In order to store and manage a large amount of ground and indoor image data with high resolution, an integrated data management system needs to be developed. Possible strategies for this purpose were discussed together with initial test on the newly defined 3D maps. The features of such 3D maps, data organization, key techniques used for the map storage, such as image compression based on wavelet transformation, quadtree index, update and retrieval, were analyzed, with the goals of bringing some profits to the storage and management of the digital data in the visual construction of digital mine, digital city and digital community.

关键词： 3D map geo-referenced image image database storage technology

基于载波相位误差EMD-Wavelet消除模型的GPS精密静态定位研究(英文)

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基于载波相位误差EMD-Wavelet消除模型的GPS精密静态定位研究(英...

Construction and application of formal ontology for mine

中国测绘学会第九次全国会员代表大会暨学会成立50周年纪念大会

作者： Jian Wang, Jinling Wang and Craig Roberts school of surveying and spatial information systems The university of new south wales sydney nsw 2052, australia

In this paper, a new EMD-Wavelet based model is used to reduce carrier phase errors for precise static GPS positioning. The EMD is a new signal processing method for analysing non-linear time series, which decomposes a time series into a finite and often small number of Intrinsic Mode Functions (IMFs). The decomposition procedure is adaptive and data-driven. The IMFs are stationary which are more suitable for wavelet analysis. The merits of both the EMD and Wavelets are combined to produce an improved EMD-Wavelet systematic error extraction model. Thereafter, a method of the GPS baseline calculation based on the EMD-Wavelet systematic error mitigation model is suggested. The experimental results show that the proposed scheme dramatically improves the reliability of ambiguity resolution with a larger F-ratio and W- ratio indexes after systematic error elimination.

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中国有色金属学会会刊：英文版 2011年第S3期21卷 577-582页

作者： CHENG Gang 1, 2, ZHANG Yin-ling1, 2, WANG Fei 1 ,2, ZHANG Zhen-hui 3, GUO Yu-xiang1, 2 1. Key Laboratory of Mine spatial information Technologies of State Bureau of surveying and Mapping, Henan Polytechnic university, Jiaozuo 454003, China 2. school of surveying and land information Engineering, Henan Polytechnic university, Jiaozuo 454003, China 3. Qingdao Branch of Naval Aeronautical Engineering Institute, Qingdao 266041, China Henan Polytech Univ Key Lab Mine Spatial Informat Technol State Bur Surveying & Mapping Jiaozuo 454003 Peoples R China Henan Polytech Univ Sch Surveying & Land Informat Engn Jiaozuo 454003 Peoples R China Naval Aeronaut Engn Inst Qingdao Branch Qingdao 266041 Peoples R China

Digital mine is the only way for the development of mining industry in China. Due to lack of appropriate standards and norms, and different awareness in the field of digital mine among academia and industry insiders, the meaning for digital mine is still unclear. Starting from the nature of mining and removing of views of specialized fields, this paper constructs formal ontology for digital mine and proposes the four levels for it. The ontology clarifies the concept world for digital mine, defines the meaning of concepts and relations clearly, provides a reference for the standard construction for digital mine and provides a unified semantic framework for the integration of heterogeneous mine data. Meanwhile, it can provide formal reasoning knowledge for expert system of digital mine and improve the intelligence and automation while the machine automatically interpreting and processing mine spatial data.

关键词： Digital mine formalization ontology concept world semantic share

Vision navigation algorithm for mine agent based on quaternion

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中国有色金属学会会刊：英文版 2011年第S3期21卷 610-615页

作者： LI Ke-zhao1, 4, LEI Wei-wei1, 2, GUO Zeng-zhang1, 2, WU Li-xin3, ZHANG Qin4 1. school of Survey and Land information Engineering, Henan Polytechnic university, Jiaozuo 454003, China 2. Key Laboratory of Mine spatial information Technologies of State Bureau of surveying and Mapping, Henan Polytechnic university, Jiaozuo 454003, China 3. College of Resources and Civil Engineering, Northeastern university, Shenyang 110819, China 4. College of Geology Engineering and Geomatics, Chang’an university, Xi’an 710054, China [a] school of Survey and Land information Engineering Henan Polytechnic University Jiaozuo 454003 China [b] Key Laboratory of Mine spatial information Technologies of State Bureau of surveying and Mapping Henan Polytechnic University Jiaozuo 454003 China [c] College of Resources and Civil Engineering Northeastern University Shenyang 110819 China [d] College of Geology Engineering and Geomatics Chang'an University Xi'an 710054 China

Autonomous relative navigation is the key technology in mining or rescuing. On the basis of mine requirement and the theories of machine vision, an autonomous relative navigation algorithm for mine agent based on quaternion was proposed. In rotation transformation, this algorithm was represented by using quaternion. Because the Jacobi matrix of this method is lower than that of Hall algorithm, the calculation efficiency is improved by using this algorithm. The results of these experiments show that the computation burden of this algorithm based on quaternion is about half that of Hall algorithm. This algorithm based on quaternion is improved as a valid way to solve the problem of mine real-time navigation.

关键词： quaternion mine agent vision navigation

Conceptual design,data model and key techniques of“3D Assistant”

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中国有色金属学会会刊：英文版 2011年第S3期21卷 692-698页

作者： LI Qing-yuan1, ZHANG Xuan2, JIN Yang2, ZHOU Hui3, WANG Qian-jin3,WEI Zhan-yin1 1. Key Laboratory of Geo-Informatics, Chinese Academy of surveying and Mapping, Beijing 100830, China 2. school of Geo-Science and surveying Engineering, China university of Mining and Technology, Beijing 100083, China 3. school of Geomatics, Liaoning Technical university, Fuxin 123000, China [a] Key Laboratory of Geo-Informatics Chinese Academy of Surveying and Mapping Beijing 100830 China [b] school of Geo-Science and surveying Engineering China University of Mining and Technology Beijing 100083 China [c] school of Geomatics Liaoning Technical University Fuxin 123000 China

Conceptual design, data model and key techniques of "Geo-engineer 3D assistant", an underground 3D GIS oriented to geology and mine application, were discussed. In particular, the importance of high-order smoothing triangular pieces to surface's fine expression in geological modeling was emphasized. The contour mode is the most favorite mode of the three modes about surface expression: DEM, TIN and contour. Topology in underground 3D modeling with CAGD was compared. From the view of boundary and coboundary, which is soul of IS 19107 (Geographic information spatial schema), 3D underground topology was re-examined.

关键词： 3D assistant true 3D GIS fine expression of surface contour mode 3D topology

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GPS实时监测和预报电离层电子含量

天文学报 2004年第2期45卷 213-219页

作者：金双根 J.Wang 章红平朱文耀中国科学院上海天文台上海200030 school of surveying and spatial information systems University of New South WalesSydneyAustralia

GPS能高精度地实时监测电离层总电子含量(TEC)变化,对纠正单频GPS接收机电离层延迟和监测电离层活动及其所反映的太阳活动规律具有重要意义。上海地区GPS综合应用网的建立,为监测长江三角洲地区电离层变化提供了宝贵的资料,利用这些双频... 详细信息

GPS能高精度地实时监测电离层总电子含量(TEC)变化,对纠正单频GPS接收机电离层延迟和监测电离层活动及其所反映的太阳活动规律具有重要意义。上海地区GPS综合应用网的建立,为监测长江三角洲地区电离层变化提供了宝贵的资料,利用这些双频GPS接收机的连续观测资料,可近实时地监测和预报该地区电离层总电子含量,其内外符精度和外推预报30分钟的精度均优于0.4m。

关键词：天体测量学电离层电子含量 GPS 太阳活动规律

A new relative radiometric consistency processing method for change detection based on wavelet transform and a low-pass filter

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Science China(Technological Sciences) 2010年第S1期53卷 7-14页

作者： SUN KaiMin1,SUI HaiGang1,2,LI DeRen1 & XU Chuan1,2 1 State Key Laboratory of information Engineering in surveying,Mapping and Remote Sensing,Wuhan university,Wuhan 430079,China 2 State Key Laboratory of Subtropical Building Science,south China university of Technology,Guangzhou 510640,China 1. State Key Laboratory of information Engineering in surveying Mapping and Remote Sensing Wuhan University Wuhan 430079 China 2. State Key Laboratory of Subtropical Building Science South China University of Technology Guangzhou 510640 China

The research purpose of this paper is to show the limitations of the existing radiometric normalization approaches and their disadvantages in change detection of artificial objects by comparing the existing approaches,on the basis of which a preprocessing approach to radiometric consistency,based on wavelet transform and a spatial low-pass filter,has been *** approach first separates the high frequency information and low frequency information by wavelet ***,the processing of relative radiometric consistency based on a low-pass filter is conducted on the low frequency *** processing,an inverse wavelet transform is conducted to obtain the results *** experimental results show that this approach can substantially reduce the influence on change detection of linear or nonlinear radiometric differences in multi-temporal images.

关键词： wavelet transform radiometric normalization low-pass filter change detection

Spatiotemporal model of open-pit based on 3-D deposit model

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中国有色金属学会会刊：英文版 2011年第S3期21卷 616-620页

作者： XIA Chun-lin1, ZHOU Hui1, LI Qing-yuan2, MA Zhen-li3 1. school of Geomatics, Liaoning Technical university, Fuxin 123000, China 2. State Key Laboratory for GIS Engineering, Chinese Academy of surveying and Mapping, Beijing 100830, China 3. Yinchuan College, China university of Mining and Technology, Yinchuan 750011, China [a] school of Geomatics Liaoning Technical University Fuxin 123000 China [b] State Key Laboratory for GIS Engineering Chinese Academy of Surveying and Mapping Beijing 100830 China [c] Yinchuan College China University of Mining and Technology Yinchuan 750011 China

A new method was put forward to make up the three-dimensional deposit model, and the spatiotemporal models of open-pit with temporal dynamics were also studied combined with the corrected models of multilevel ground states so as to bring the three-dimensional open-pit model at different time and its model serial formed from the evolvement into the management of temporal dimension in order to realize the spatial three-dimension and temporal dynamic for the mining management in open-pits,which makes this model easy to query and analyze 3-D information, also help surface mining replaying and stope evolution forecasting. Finally, the time-spatial model was established to show the dynamic mining on some open-pit under the windows XP and VC++ environment.

关键词： 3D model of deposit three-dimensional model mixed model temporal model open-pit