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High-accuracy topographical information extraction based on fusion of ASTER stereo-data and ICESat/GLAS data in Antarctica

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Science china Earth Sciences 2009年第5期52卷 714-722页

作者： E DongChen1,3,SHEN Qiang2,XU Ying1,3 & CHEN Gang4.1 Chinese Antarctic Center of surveying and map.ing,Wuhan university,Wuhan 4.0079,{4. 2 Institute of Seismology {4. Earthquake Administration,Wuhan 4.0071,{4. 3 Key Laboratory of Polar surveying and map.ing,State Bureau of surveying and map.ing,Wuhan university,Wuhan 4.0079,{4. 4.dep.rtment of Geography,university of Calgary,Calgary,Alberta T2N 1N4.Canada Chinese Antarctic Center of surveying and map.ing Wuhan University Wuhan 430079 China Institute of Seismology china Earthquake Administration Wuhan 430071 China Key Laboratory of Polar surveying and map.ing State Bureau of Surveying an

In order to better support Antarctic inland ice sheet expedition from Zhongshan Station to Dome A,the topographic data are *** present,although the entire Antarctic DEM provided by RAMP(Ra-darsat Antarctic map.ing Project) was estimated at the highest horizontal(spatial) resolution of about 200 m,the real horizontal resolution of the DEM varies from place to place depending on the density and scale of the original source *** ice shelves and the inland ice sheet,the horizontal resolution is about 5 km;the vertical accuracy is estimated to be ±50 m in interior East Antarctic ice sheet and away from the mountain ***,more accurate topographic data are unavailable in *** order to meet the requirements of high-accuracy topographic information for further researches,this paper mainly addresses a fusion study of ASTER stereo pairs and ICESat/GLAS altimetry data for extraction of high-accuracy DEM in East Antarctica,based on the high horizontal resolution(15 m) of ASTER and vertical accuracy(13.8 cm) of ICESat/***,some altimetry data were selected as vertical control points to reduce errors of image correlation matching during the extraction of ASTER-based ***,ice sheet altimetry data derived from ICESat were used to generate DEM ranging from 75° to 81°S because existing ASTER data do not cover this area and high density of the coverage of ICESat altimetry ***,the DEM in coverage of the expedition route was *** analysis of result reveals that the DEM accuracy is improved *** absolute vertical accuracy of DEM is higher than 15 m in some cases and higher than 30 m for all the areas along the expedition route except from the 009-001 scene;the interior accuracy is higher than 15 m and higher than 7 m in some *** can meet the requirements of topographic map at 1:50000 scale,which is an economic and advantageous method to produce the topographic products.

关键词： DEM Antarctica Zhongshan Station Dome A ASTER ICESat GLAS

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 4.4.03, china 2. Key Laboratory of Mine Spatial Information Technologies of State Bureau of surveying and {4., Henan Polytechnic university, Jiaozuo 4.4.03, 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 map.ing 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

Annual integral changes of time serial NDVI in mining subsidence area

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中国有色金属学会会刊：英文版 2011年第S3期21卷 583-588页

作者： MA Chao1, GUO Zeng-zhang1, ZHANG Xiao-ke2, HAN Rui-mei1 1. Key Laboratory of Mine Spatial Information Technologies of State Bureau of surveying & map.ing, Henan Polytechnic university, Jiaozuo 4.4.00, china 2. School of Coal Min{4. Engineer{4., taiyuan university of technology, taiyuan 03.024. china [a] Key Laboratory of Mine Spatial Information Technologies of State Bureau of surveying & map.ing Henan Polytechnic University Jiaozuo 454000 China [b] School of Coal Mining Engineering Taiyuan University of Technology Taiyuan 030024 China

By means of MORTRAN4.model of FLASSH module, an atmospheric correction of the SPOT II/IV data of four-year period for eight experimental coal faces of Lu'an mine area was done. The mining-affected zones were obtained with probability integral method. The normalized difference vegetation index (NDVI) and its mean were obtained by band ratio calculation at the mining subsidence area. Using FOURIER4.model of the fast Fourier transform (FFT) of discrete Fourier analysis theory, the mean NDVI time series data set was reconstructed. With the mean of NDVI transformed into amplitude and the phonological information transformed into phase, the law of NDVI variation by monthly, quarterly, annual were obtained. The annual integral of the time series of NDVI Fourier function (ANDVI) was obtained. The results show that an experience formula of ANDVI variation accompanies with mining time; A fast estimation formula of NPP by means of a coefficient of mining disturbance such as γ.

关键词： Lu’an mine area annual integral of NDVI net primary productivity coefficient of mining disturbance

A new method for mining deformation monitoring with GPS-RTK

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中国有色金属学会会刊：英文版 2011年第S3期21卷 659-664页

作者： GAO Jing-xiang1, 2, LIU Chao2, WANG Jian1, 2, LI Zeng-ke2, MENG Xiang-chao2 1. Key Laboratory for Land Environment and Disaster Monitoring of State Bureau of surveying and map.ing, {4. university of Mining and technology, Xuzhou 221116, {4. 2. School of Environment and Spatial Informatics, {4. university of Mining and technology, Xuzhou 221116, {4. [a] Key Laboratory for Land Environment and Disaster Monitoring of State Bureau of surveying and map.ing China University of Mining and Technology Xuzhou 221116 China [b] School of Environment and Spatial Informatics China University of Mining and Technology Xuzhou 221116 China

Based on ranging intersection theory, a new method which is simple and easy to operate was proposed for data collection in the mine surface deformation monitoring with GPS-RTK centering rod measurements. It can fully eliminate the inevitable shaking error and the vertical deflection, and to some extent weaken the multipath effect on the estimates of coordinates in a relatively short period of time, using high-frequency observations. The results show that three-dimensional coordinates with a height accuracy better than 1 cm, horizontal accuracy better than 2-4.cm can be achieved through only 15-30 s continuous observation by 20 Hz high-frequency and effectively improve the measurement accuracy and efficiency of RTK, fully satisfying the high-speed and high-precision data acquisition in mine surface subsidence deformation monitoring.

关键词： GPS rover pole multipath delay deformation monitoring

A fusion algorithm for remote sensing images based on nonsubsampled pyramids and bidimensional empirical decomposition

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Science china(Technological Sciences) 2010年第S1期53卷 196-204页

作者： ZHANG XiaoDong 1,WANG WenBo 2,WANG DiFeng 3 & ZHANG Yu 4.1 State Key Laboratory of Information Engineering in surveying,map.ing and Remote Sensing,Wuhan {4.,Wuhan 4.0079,china 2 College of Sciences,Wuhan {4. of Science and technology,Wuhan 4.0065,china 3State Key Laboratory of Satellite Ocean Environment Dynamics,Second Institute of Oceanography,State Oceanic Administration,Hangzhou 310012,china 4.Spatial Information technology Application Research Institute,Changjiang River Scientific Research Institute,Wuhan 4.0010,china Wuhan Univ State Key Lab Informat Engn Surveying Mapping & R Wuhan 430079 Peoples R China Wuhan Univ Sci & Technol Coll Sci Wuhan 430065 Peoples R China State Ocean Adm Inst Oceanog 2 State Key Lab Satellite Ocean Environm Dynam Hangzhou 310012 Zhejiang Peoples R China Changjiang River Sci Res Inst Spatial Informat Technol Applicat Res Inst Wuhan 430010 Peoples R China

In order to improve the quality of remote sensing image fusion,a new method combining nonsubsampled Laplacian pyramid (NLP)and bidimensional empirical mode decomposition(BEMD)is ***,the high resolution panchromatic image (PAN)is decomposed using NLP until the approximate component and the low resolution multispectral image(MS)contain features with a similar ***,the approximation component and the MS are decomposed by BEMD,resulting in a number of bidimensional intrinsic mode functions(BIMF)and a residue *** instantaneous frequency is computed in 4.directions of the *** the positive or negative coefficients in the corresponding position,a weighted algorithm is designed for fusing the high frequency details using the instantaneous frequency and the coefficient absolute value of the BIMFs as fusion *** fused image is then obtained through inverse BEMD and *** results have illustrated the advantage of this method over the IHS,DWT andà-Trous wavelet in both spectral and spatial detail qualities.

关键词： bidimensional empirical mode decomposition nonsubsampled pyramid instantaneous frequency remote sensing image fusion

Study on curved surface fitting model using GPS and leveling in local area

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中国有色金属学会会刊：英文版 2005年第S1期15卷 148-152页

作者： GUO Jin-yun~1, CHANG Xiao-tao~2, YUE Qiang~3 (1. dep.rtment of Territory Information and surveying Engineering, Xuzhou Normal university, Xuzhou 221009, {4. 2. Chinese Academy of surveying and map.ing, Beijing 100039, {4. 3. Shandong university of Science and technology, Qingdao 266510, {4.) Xuzhou Normal Univ Dept Terr Informat & Surveying Engn Xuzhou 221009 Peoples R China Chinese Acad surveying & map.ing Beijing 100039 Peoples R China Shandong Univ Sci & Technol Qingdao 266510 Peoples R China

The height anomaly surface is fitt and the quasi-geoid can be obtained when the height anomaly is determined with the geometric analytic method. Therefore, some mathematical models to fit height anomaly surface using GPS, leveling and terrain data in a local area, including the polynomial fitting model, the multi-surface function fitting model, the motion surface fitting model and the fitting model of little flexibility deformation of thin board, are given. Then the digital characteristics are analyzed with the curved surface theory. The General curvature and the mean curvature of surface are concluded. The advantage, disadvantage and application of the above models are discussed. The effect of terrain undulation on height anomaly is considered in the surface fitting models. The practical case indicates that these models are of validity and practicability. It is concluded that the above models can give the good fitting results at the centimeter level. But the polynomial fitting model is worse than the other models.

关键词： GPS height anomaly terrain effect curve surface fitting

DC dielectrophoresis separation of marine algae and particles in a microfluidic chip

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Science china Chemistry 2012年第4期55卷 524-530页

作者： SONG YongXin1, YANG JianDong1, SHI XiaoFei4. JIANG Hai3, WU YanBin1, PENG Ran1, WANG Qi5, GONG Ning2, PAN XinXiang1, SUN YeQing2 & LI DongQing1,31dep.rtment of Marine Engineering, Dalian Maritime university, Dalian 116026, china 2Institute of Environmental Systems Biology, Dalian Maritime university, Dalian 116026, china 3dep.rtment of Mechanical and Mechatronics Engineering, university of Waterloo, Waterloo, ON, N2L 3G1, Canada 4.ollege of Information Science and technology, Dalian Maritime university, Dalian 116026, china 5dep.rtment of Respiratory Medicine, the Second Hospital Affiliated to Dalian Medical university, Dalian 116026, china 1. dep.rtment of Marine Engineering Dalian Maritime University Dalian 116026 China4. College of Information Science and Technology Dalian Maritime University Dalian 116026 China3. Department of Mechanical and Mechatronics Engineering University of Waterloo Waterloo ON N2L 3G1 Canada5. Department of Respiratory Medicine the Second Hospital Affiliated to Dalian Medical University Dalian 116026 China2. Institute of Environmental Systems Biology Dalian Maritime University Dalian 116026 China

This paper reports a microfluidic method of continuous separation of marine algae and particles by DC dielectrophoresis. The locally non-uniform electric field is generated by an insulating PDMS triangle hurdle fabricated within a PDMS microchannel. Both the particles and algae are subject to negative dep forces at the hurdle where the gradient of local electric-field strength is the strongest. The dep force acting on the particle or the algae depends on particles' or algae's volume, shape and dielectric properties. Thus the moving particles and algae will be repelled to different streamlines when passing the hurdle. In this way, combined with the electroosmotic flow, continuous separation of algae of two different sizes, and continuous separation of polystyrene particles and algae with similar volume but different shape were achieved. This first demonstration of DC dep separation of polystyrene particles and algae with similar sizes illustrates the great influence of dielectric properties on particle separation and potentials for sample pretreatment.

关键词： DC dielectrophoresis – marine algae – particle – microfluidic chip – permittivity difference

An Evaluation of BeiDou Navigation Satellite System

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An Evaluation of BeiDou Navigation Satellite System

第三届中国卫星导航学术年会

作者： Gao Weiguang1,2, Su Mudan1, Li Chang1, Li Junzheng3, Hu Zhigang4. Feng Laiping5 (1. Beijing Institute of Tracking and Telecommunication technology, Beijing 100094. china 2. School of Electronic and Information Engineering, Beijing university of Aeronautics and Astronautics, Beijing, 100191,china 3. Institute of surveying and map.ing, university of Information Engineering, Zhengzhou 4.0052, china 4. GNSS research center of Wuhan university, Wuhan, 4.0079, china 5. Xian Research Institute of surveying and map.ing, Xian 710054. china 5. Xian Research Institute of surveying and map.ing, Xian 710054. china)

＜正＞The performance evaluation of Beidou satellite navigation system is the preconditions and basic elements of Beidou service. According to the integrated test task of Beidou system, the evaluation methods and algo... 详细信息

关键词： 1. Beidou satellite navigation system. 2. accuracy. 3. continuity. 4. availability. 5. evaluation

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煤系岩石产酸潜力的索氏淋滤实验评价

中国矿业大学学报 2013年第2期42卷 214-220页

作者：赵峰华孙红福刘乃利中国矿业大学(北京)地球科学与测绘工程学院北京100083 中国矿业大学(北京)煤炭资源与安全开采国家重点实验室北京100083

为了准确评价非均质性较强含煤岩系样品的产酸潜力,采用索氏淋滤实验方法对山西省西山煤田石炭二叠纪含煤岩系岩石样品的产酸潜力进行了评价,建立了煤系岩石产酸潜力的索氏淋滤实验评价方法.结果表明:1)淋出液pH值小于7、(Ca+Mg+Mn)/SO... 详细信息

为了准确评价非均质性较强含煤岩系样品的产酸潜力,采用索氏淋滤实验方法对山西省西山煤田石炭二叠纪含煤岩系岩石样品的产酸潜力进行了评价,建立了煤系岩石产酸潜力的索氏淋滤实验评价方法.结果表明:1)淋出液pH值小于7、(Ca+Mg+Mn)/SO24.累积摩尔比小于1的样品被评价为产酸样品,反之被评价为不产酸样品.据此将西山煤田的泥岩、砂岩和菱铁矿等3个样品评价为不产酸样品(淋出液pH>8,(Ca+Mg+Mn)/SO24.累积摩尔比1.99～2.91),2个非均质黄铁矿样品评价为强产酸样品(淋出液pH4.(Ca+Mg+Mn)/SO24.累积摩尔比0.08～0.58);2)基于淋出液SO24.浓度计算的2个非均质黄铁矿样品产酸速率分别为177.1mM[SO24.]/(kg.d)和291.8mM[SO24.]/(kg.d);基于淋出液(Ca+Mg+Mn)浓度计算的砂岩、泥岩和非均质菱铁矿样品酸中和速率为10.73～68.77mM[Ca+Mg+Mn]/(kg.d);3)产酸样品淋出液中SO24.离子累积质量浓度为507～1 681mg/L,Fe离子累积质量浓度为135～753mg/L;不产酸样品淋出液中SO24.离子累积质量浓度小于14.mg/L,Fe离子累积质量浓度小于1.2mg/L;4.不产酸样品淋出液的S/Fe摩尔比大于66,2个产酸非均质黄铁矿样品淋出液的S/Fe摩尔比为0.95～3.2;5)样品淋滤过程中产生了赤铁矿、石膏和硬石膏等次生矿物相.

关键词：索氏淋滤实验产酸速率酸中和速率含煤岩系