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Study on Quality Evaluation Methods for Remotely Sensed Images Fusion WANG Le, NIU Xuefeng, WEI Bin, CHEN Lichun 测绘通报    2015, 0 (2): 77-79.   DOI: 10.13474/j.cnki.11-2246.2015.0047 Abstract （1504）   HTML    PDF       Knowledge map    Save Reference | Related Articles | Metrics

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On the Effect of Coordinate System Transformation by Selecting Seven Parameters of Different Spatial Domain TIAN Xin, YIN Hui, GAN Zheyuan 测绘通报    2015, 0 (2): 10-13.   DOI: 10.13474/j.cnki.11-2246.2015.0031 Abstract （987）   HTML    PDF       Knowledge map    Save Reference | Related Articles | Metrics

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An Empirical Tropospheric Delay Model Based on SARIMA LIU Zhongliu, REN Chao, GAN Xiangqian, LIANG Chunli 测绘通报    2018, 0 (3): 14-17,31.   DOI: 10.13474/j.cnki.11-2246.2018.0068 Abstract （778）   HTML    PDF       Knowledge map    Save In order to reduce the effect of tropospheric delay and improve the positioning accuracy of GNSS,this paper discusses the possibility of using the prediction model to calculate tropospheric delay in the absence of meteorological parameters,and an empirical tropospheric delay prediction model is proposed:a tropospheric delay prediction method based on the seasonal autoregressive integrated moving average model (SARIMA).Combined with Changchun and Shanghai ZTD data to predict and analyze,the results show that the ZTD forecasting model based on SARIMA can meet the ZTD calculation demand at different time in different regions,and it is a kind of high precision ZTD forecasting method. Reference | Related Articles | Metrics

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Research on Architectural Design of the “Multi-plan Integration” Information Platform: A Case Study of Nanjing SUN Yuting, WU Luewei, QIN Xiao 测绘通报    2017, 0 (12): 117-121.   DOI: 10.13474/j.cnki.11-2246.2017.0392 Abstract （1284）   HTML    PDF（pc） （1264KB）（3515）       Knowledge map    Save In recent years,"multi-plan integration" is an actively promoted reform taken by our party and the nation.It is an effective method to promote modernization of urban management system and governance capability.Information system is an important technical support for "multi-plan integration" work,department planning data sharing and cohesion of planning process.In today's world,smart city construction is in full swing and government reform measures such as "map world","internet plus government services" are vigorously propelled.In the above context,how to construct an efficient "multi-plan integration" information platform combining with existing smart city results is a question that requires comprehensive consideration.After analyzing the construction experience of typical cities in China,this paper takes Nanjing as an example and uses TOGAF to design the data architecture,business architecture,application architecture and technology architecture of "multi-plan integration" information system. Reference | Related Articles | Metrics

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Calibration for DMSP/OLS Stable Nighttime Light Images ZHANG Mengqi, HE Zongyi, FAN Yong 测绘通报    2017, 0 (12): 58-62,76.   DOI: 10.13474/j.cnki.11-2246.2017.0379 Abstract （1826）   HTML    PDF（pc） （1420KB）（3352）       Knowledge map    Save Because of the uncontinuity and the oversaturation of DMSP/OLS stable nighttime light images,the data cannot be compared with each other directly.Therefore,it's necessary to calibrate images before using them.In this paper,a new method is proposed to calibrate the nighttime light data,including mutual correction between sensors,continuity correction and oversaturation correction.The 34 images of 1992-2013 time series are corrected using this method systematically.And then the evaluation for the result is carried out,including visual evaluation,quantitative evaluation,relative evaluation and advantage analysis.After calibration,the continuity and stability of the images are greatly improved,and the linear correlation between nighttime light data and the economic data is stronger.Error introduction in the traditional method is avoided.This method leads to a good calibration result. Reference | Related Articles | Metrics

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An Analysis of Cultural Map ZHOU Guokui 测绘通报    2016, 0 (3): 134-137,145.   DOI: 10.13474/j.cnki.11-2246.2016.0106 Abstract （961）   HTML    PDF（pc） （1KB）（3298）       Knowledge map    Save Reference | Related Articles | Metrics

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Design of Large Data Center Construction for Smart City KONG Lingli 测绘通报    2017, 0 (10): 143-147.   DOI: 10.13474/j.cnki.11-2246.2017.0334 Abstract （1866）   HTML    PDF（pc） （3740KB）（3024）       Knowledge map    Save The paper analyzes the classification and characteristics of big data of smart city, and designs the smart city data model based on distributed storage and cloud computing technology. The model can efficiently organize and store the key data components of smart city such as geographic data, business data and real-time data, and use the model to build a framework of smart city data center. Reference | Related Articles | Metrics

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A Study on Correction Parameters of GPS Signal XIN Jie, REN Hui, WANG Dongxia, ZHAO Jinxian, HU Caibo 测绘通报    2016, 0 (3): 22-24,28.   DOI: 10.13474/j.cnki.11-2246.2016.0077 Abstract （744）   HTML    PDF（pc） （1KB）（2994）       Knowledge map    Save Reference | Related Articles | Metrics

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Model Comparison and Accuracy Analysis of Single-stationed GPS Velocity Estimation Using GPS Doppler Measurements SHAN Rui, ZHAO Tiehu, YU Deshui, YANG Yuan, LI Panfeng 测绘通报

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A Novel FMCW GB-SAR Based Bridge Deformation Measurement Campaign GUO Peng, ZHANG Haoyu, CHEN Li, ZHOU Keqin, WANG Chunlai 测绘通报    2017, 0 (6): 94-97.   DOI: 10.13474/j.cnki.11-2246.2017.0198 Abstract （867）   HTML    PDF（pc） （1202KB）（2295）       Knowledge map    Save Ground-based synthetic aperture radar (GB-SAR) is a new type of building deformation monitoring technologies. Compared with the traditional monitoring methods, this method features high precision and large area. Fast-GBSAR is designed based on the frequency modulated continuous wave (FMCW) technology. Compared with the similar system based on the stepping continuous wave technology in China, the processing speed of the system is increased by 30 times and the reliability is higher. Fast-GBSAR has carried on the public test to many bridges in the country, the monitoring result indicated that Fast-GBSAR measurement precision can achieve 0.01 mm. Fast-GBSAR has the great potential in the deformation monitoring domain. Reference | Related Articles | Metrics

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Investigation and Practice of Digital City to Smart City LI Chengming, LIU Xiaoli, YIN Jie, MAO Xi 测绘通报

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测绘通报    2017, 0 (6): 159-160.   Abstract （761）   HTML    PDF（pc） （1079KB）（2201）       Knowledge map    Save Reference | Related Articles | Metrics

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SLAM Technology and Its Application in Surveying and Mapping HUANG He, TONG Guofeng, XIA Liang, LI Yong, YUE Xiaoyang, JIANG Bin 测绘通报    2018, 0 (3): 18-24.   DOI: 10.13474/j.cnki.11-2246.2018.0069 Abstract （2031）   HTML    PDF       Knowledge map    Save In recent years,robots have a wide range of applications in all industries.Simultaneous localization and mapping (SLAM) is one of the key technologies in the field of robots.Based on the SLAM technology,three-dimensional reconstruction of the visual information and LiDAR data can be carried out.These three-dimensional models and maps have a wide range of applications in the field of surveying and mapping.Especially the more accurate three-dimensional model data,it is significance for accurate measurement and high-precision navigation.However,the discussions of SLAM technology in the field of surveying and mapping applications are still relatively little,most of the field in the robot were reviewed,currently.Therefore,this paper discusses the development and principle of SLAM technology and its application in the field of surveying and mapping from the perspective of surveying and mapping,and expands the application prospect of SLAM technology in the field of surveying and mapping.Then important references are provided for domestic and foreign researchers in surveying and mapping and robotics. Reference | Related Articles | Metrics

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测绘通报    2017, 0 (5): 159-160.   Abstract （4385）   HTML    PDF（pc） （5121KB）（2178）       Knowledge map    Save Related Articles | Metrics

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Review of Remote Sensing Monitoring of Crop Pests and Diseases JIAN Junfan, HE Hongchang, WANG Xiaofei, LI Yue 测绘通报    2018, 0 (9): 24-28.   DOI: 10.13474/j.cnki.11-2246.2018.0273 Abstract （2264）   HTML    PDF（pc） （1070KB）（2154）       Knowledge map    Save Monitoring and early warning of pests and diseases in crops is an important direction in precision agriculture,which can effectively improve grain yield and quality.From the principle and technical route of monitoring crop pests and diseases with hyperspectral remote sensing,this paper first expounds four spectral feature extraction and transformation methods,including the derivative transformation and logarithmic transformation of original spectra,the characteristic parameters based on spectral position and area,the feature parameters of continuum removal,and the vegetation indexes.Then this paper discusses three inversion methods,including the statistical analysis,the machine learning and the physical model,by which the regression relationship between spectral reflectance and pest monitoring parameters is established.Finally this paper analyzes the advantages and problems of using hyperspectral remote sensing technology for crop pests and diseases monitoring. Reference | Related Articles | Metrics

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Analysis of GPS Satellite and Receiver Antenna Absolute PCO/PCV Influence on High Precise Baseline Resolution HU Yifan, HU Xian, CHEN Junping, HU Congwei 测绘通报    2017, 0 (5): 11-16.   DOI: 10.13474/j.cnki.11-2246.2017.0144 Abstract （1669）   HTML    PDF（pc） （4709KB）（2143）       Knowledge map    Save As one significant error source, the receiver antenna and GPS satellite antenna PCO/PCV must be corrected in high accuracy data processing. In this paper, the influence of receiver antenna and GPS satellite antenna PCO/PCV is analyzed for baseline processing. The result shows that the effects of receiver antenna PCO/PCV for long and very long baseline in components and length can reach 101 mm. The effects of satellite antenna PCO/PCV for long baseline in components and length are in millimeter level, the maximum is less than 4 mm, for very long baseline, the effects in components and length can reach 40 mm. Reference | Related Articles | Metrics

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A Visual Analysis Method of Urban Public Traffic Network Distribution ZHANG Jianqin, WANG Pengyu, DU Mingyi 测绘通报    2017, 0 (5): 51-55.   DOI: 10.13474/j.cnki.11-2246.2017.0153 Abstract （964）   HTML    PDF（pc） （4758KB）（2008）       Knowledge map    Save Visual analysis technology is playing an increasingly important role in the analysis of traffic data and the discovery of traffic problems and decision making. In order to intuitively show the city transit network spatial distribution density, the vector data of Beijing city bus lines is analyzed based on the direct visualization and visualization method of two kinds of aggregation distribution of transit network spatial analysis. The original data processing is calculated for direct visualization of bus lines in Beijing city main roads based on data distribution method. The canvas drawing thermodynamic diagram is used on the original data visualization. The visualization results according to the analysis of the situation of spatial distribution of bus lines in Beijing city show that this method has practical value and significance of city public transportation network planning and optimization. Reference | Related Articles | Metrics

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Correction of nighttime light images of DMSP/OLS in China LU Xiu, LI Jia, DUAN Ping, ZHANG Birong, LI Chen 测绘通报    2019, 0 (7): 127-131,159.   DOI: 10.13474/j.cnki.11-2246.2019.0234 Abstract （975）   HTML    PDF（pc） （1612KB）（1993）       Knowledge map    Save The nighttime light images acquired by the operational linescan system (OLS) equipped with the Defense Meteorological Satellite Program (DMSP) have strong photoelectric amplification capability, small storage capacity and can directly reflect human activities. It is applied to urbanization monitoring and social and economic factors estimation. However, each sensor that obtains these data sets has not been scaled on the star, there is a problem of pixel saturation, and these data obtained by the sensors lacks comparability and continuity from 1992 to 2013 and cannot be directly used for long-term sequences. The study therefore requires the correction of long-term sequence DMSP/OLS nighttime light images. The correction includes mutual correction, saturation correction, annual fusion, inter-annual correction, etc. among the various light images in China. And the rationality test of the corrected DMSP/OLS nighttime light images. The test results show that the calibration method is feasible. Reference | Related Articles | Metrics

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Real-time Observation Decoding and Positioning Analysis Based on Qianxun BeiDou Ground Based Augmentation System HUANG Yongshuai, SHI Junbo, OUYANG Chenhao, LU Xingning 测绘通报    2017, 0 (9): 11-14.   DOI: 10.13474/j.cnki.11-2246.2017.0277 Abstract （825）   HTML    PDF（pc） （3924KB）（1968）       Knowledge map    Save As the first commercial BeiDou ground based augmentation system (GBAS) in China, the Qianxun location network announced in May 2016 is able to provide high-precision positioning service for users in majority territory. This paper first introduces the message formatting and decoding broadcast by the Qianxun Beidou GBAS, and then evaluates the RTK and RTD positioning performance in Wuhan and Chongqing. Numerical results show that the positioning precision can reach centimeter for RTK and sub-meter for RTD, respectively. The aim of this paper is to provide a basis for the promotion of BeiDou GBAS. Reference | Related Articles | Metrics

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The Method of Enhanced Gaussian Function Weighted KNN Indoor Positioning BI Jingxue, ZHEN Jie, WANG Yunjia, LIU Xiaoxiao 测绘通报    2017, 0 (6): 9-12,35.   DOI: 10.13474/j.cnki.11-2246.2017.0179 Abstract （1088）   HTML    PDF（pc） （1165KB）（1927）       Knowledge map    Save Because of less deployed APs in some indoor areas and signal fingerprint time-varying characteristics, it is possible for the currently scanning RSSI vector to be similar to corresponding RSSI sequence which is stored with location in radio map. In these cases, the calculated Euclidean distance is usually 0 or very small. Error will occur when the Euclidean distance is used for weight value in weighted centroid algorithm, and no result will be obtained. And KNN algorithm, which supposes the value 1/ K as weight, will get the average of coordinates of K reference points along with relative low positioning accuracy. Therefore, Gaussian weighted KNN (GWKNN) localization algorithm is proposed:standardization processes for K nearest Euclidean distances were made, then corresponding weights were distributed by Gaussian function, at last, the weighted positioning result is obtained. Compared with the positioning results of KNN and WKNN algorithm, this positioning method can get higher robustness and positioning accuracy. Reference | Related Articles | Metrics

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Research on 3D Fine Reconstruction and Model Singling of Mountainous City Combined with Oblique Photography and Close Range Photography LIAN Rong, DING Yi, LUO Ding, WEI Wenjie, LI Penglong, LIN Xi 测绘通报    2017, 0 (11): 128-132.   DOI: 10.13474/j.cnki.11-2246.2017.0362 Abstract （818）   HTML    PDF（pc） （6978KB）（1897）       Knowledge map    Save The actual 3D model based on the UAV oblique photography is an effective way to perceive and express the complex mountain environment. To solve the problems in the generation of actual 3D model based on oblique photography for mountainous cities, a multi-scale image acquisition strategy suitable for mountainous region and a method of fusion modeling with close range photogrammetry is proposed in this paper. Experiments show that this method realizes the goal of precise modeling of the actual 3D model of oblique photography in mountainous cities. And then, the methods of actual 3D model's singling are introduced and compared. This paper provides some technical references for developing oblique photography in mountainous cities in the future. Reference | Related Articles | Metrics

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Summary of the Research Progress of Seafloor Geodetic Control Network LI Linyang, LÜ Zhiping, CUI Yang 测绘通报    2018, 0 (1): 8-13,87.   DOI: 10.13474/j.cnki.11-2246.2018.0002 Abstract （981）   HTML    PDF       Knowledge map    Save The high-precision seafloor geodetic control network is one of the infrastructures of digital ocean and underwater network centric warfare. However, the construction and research of seafloor control network at present is almost blank in China. To autonomously establish high-precision seafloor geodetic control network, this paper draws on the experience of the developed countries. Firstly, the development and current situation of the foreign seafloor control network are combined, and the composition and development of GNSS/Acoustic system are introduced systematically.Then the key technologies of data processing are studied in detail, the factors that affect the positioning accuracy of seafloor control point and its positioning accuracy are analyzed.Finally, taking the present situation in our country into account, immediate steps should be taken to speed up the construction and research of the seafloor control network. Reference | Related Articles | Metrics

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Research on the Key Technology of Urban Underground Pipeline Three- dimensional Modeling LU Dandan, TAN Renchun, GUO Mingwu, LI Pengpeng 测绘通报    2017, 0 (5): 117-119,124.   DOI: 10.13474/j.cnki.11-2246.2017.0168 Abstract （936）   HTML    PDF（pc） （5155KB）（1801）       Knowledge map    Save With the management, expression and application of urban underground pipeline information from 2D to 3D,in this paper, combined with the construction of three-dimensional model of underground pipeline in Wuhan city, on the basis of a lot of research and practice, some new methods and ideas are put forward for the key technologies of 3D automatic, fast update and integrated modeling of the underground pipelines, to provide a reference for other cities in China to carry out similar work. Reference | Related Articles | Metrics

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Development Status and Tendency of Precise Orbit Determination of Overseas Navigation Satellite System LIU Weiping, HAO Jinming 测绘通报    2016, 0 (3): 1-6.   DOI: 10.13474/j.cnki.11-2246.2016.0072 Abstract （827）   HTML    PDF（pc） （1KB）（1791）       Knowledge map    Save Reference | Related Articles | Metrics

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Calculation Methods and Accuracy Analysis of Meridian Arc Length LIU Xuejie, YANG Likun 测绘通报    2017, 0 (8): 106-109,116.   DOI: 10.13474/j.cnki.11-2246.2017.0264 Abstract （1989）   HTML    PDF（pc） （1049KB）（1781）       Knowledge map    Save There are several kinds of algorithms for calculating the meridian arc length except the classical expanded algorithm, such as numerical integration and ordinary differential equations numerical solution. In order to study the accuracy of each algorithm, this paper selected 3 sets of sample data within the geodetic latitude from 0° to 90°, whose intervals are 1°,1',1″, respectively. Based on the traditional expanded algorithms, numerical integral algorithms and numerical solution of ordinary differential equations, the corresponding meridian arc length results were calculated and the quality of each numerical algorithm with regard to algorithm accuracy and computation speed were evaluated. The results show that the 3 and 4 order Runge-Kutta algorithm not only have high precision but the computing speed is twice more than other algorithms. This paper provides new, reliable algorithm with high speed for meridian arc length calculation. The results provide an effective algorithm for calculating the meridian arc length. Reference | Related Articles | Metrics

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A Review of the Mobile Trajectory Clustering Methods MOU Naixia, XU Yujing, ZHANG Hengcai, CHEN Jie, ZHANG Lingxian, LIU Xiliang 测绘通报    2018, 0 (1): 1-7.   DOI: 10.13474/j.cnki.11-2246.2018.0001 Abstract （1760）   HTML    PDF       Knowledge map    Save Mobile trajectory data is the representation of human mobile behavior.Mining this kind of data and discovering their latent semantic information can map the people's travel patterns and social attribute,etc.The clustering method based on similarity is a common method of data mining.Trajectory clustering can be used to find the object group of the similar behavior,so as to find the relevant moving patterns.According to the characteristics of the trajectory data,the trajectory data model is divided into trajectory point model and trajectory segment model,and the corresponding similarity measure is defined:spatial similarity measure and spatio-temporal similarity measure.Then,the clustering methods of two models are reviewed,and the advantages and disadvantages of the algorithms are also summarized,which provide the basis for effective selection of clustering algorithms.Finally,the development trend of the research on the clustering method of the moving trace data is discussed. Reference | Related Articles | Metrics

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Point Cloud Registration Method Based on 2D Image Feature ZHAO Fuqun, ZHOU Mingquan 测绘通报    2017, 0 (10): 39-42,73.   DOI: 10.13474/j.cnki.11-2246.2017.0313 Abstract （1140）   HTML    PDF（pc） （5004KB）（1757）       Knowledge map    Save A point cloud registration method is proposed in the paper in order to improve the registration accuracy and convergence rate of low overlapping point clouds.Firstly,a point cloud registration algorithm based on region level is used to complete coarse registration;Secondly,3D point cloud is converted into 2D image,SURF(speeded up robust features)algorithm is used to extract 2D image features,and the matching pixel pairs are solved;Finally,3D corresponding points are gotten according to the 2D matching pixels,and the rigid transformation is solved,then the fast and accurate registration of point cloud are achieved.The experimental results showed that the registration accuracy and convergence rate of proposed point cloud registration method improved about 20% and 60% respectively compared with iterative closest point(ICP)algorithm,it is a high accurate and fast point cloud registration method. Reference | Related Articles | Metrics

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测绘通报    2017, 0 (8): 158-160.   Abstract （585）   HTML    PDF（pc） （1059KB）（1707）       Knowledge map    Save Reference | Related Articles | Metrics

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Advance and application of UAV hyperspectral imaging equipment LI Yue, YANG Cankun, ZHOU Chunping, SU Junjie 测绘通报    2019, 0 (9): 1-6,17.   DOI: 10.13474/j.cnki.11-2246.2019.0275 Abstract （945）   HTML    PDF（pc） （1190KB）（1598）       Knowledge map    Save UAV hyperspectral imaging equipment has a wide range of development prospects due to its advantages such as flexibility and simple operation.In this paper, the research progresses of hyperspectral imaging equipment development are systematically summarized and reviewed. Firstly,based on the development process of hyperspectral imager, the significant advantages of UAV's hyperspectral imaging equipment in data acquisition are expounded. Secondly, from the aspects of imaging mode and research status, the problems of image width, high cost and low level of localization of unmanned aerial hyperspectral imaging equipment are pointed out. The latest application research results based on UAV hyperspectral imaging equipment are introduced. Solutions to overcome current device shortcomings are proposed.Finally, the future development trend of unmanned aerial imaging imaging equipment is pointed out. This paper can provide some reference for the development of UAV hyperspectral imaging equipment, and can also provide some help for the application of UAV-based hyperspectral imaging equipment. Reference | Related Articles | Metrics

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A Kind of Gauss Projection Based on the Equidistant Sphere CHEN Cheng, JIN Lixin, LI Houpu, LIU Qiang 测绘通报    2017, 0 (10): 1-6.   DOI: 10.13474/j.cnki.11-2246.2017.0306 Abstract （814）   HTML    PDF（pc） （8022KB）（1593）       Knowledge map    Save A kind of Gauss projection based on the equidistant sphere is studied by reason of the problem of the impracticality of calculation by using the spherical coordinates for the traditional Gauss projection based on the horizontal elliptic cylinder. First, the direct and inverse solutions of the Gauss projection based on the equidistant sphere are derived by using the direct and inverse solutions of the rectifying latitude with respect to the geodetic latitude, which help to calculate the distortions of meridians and parallels. Then, the length distortion, angular distortion, area distortion, and convergence of meridians of the Gauss projection based on the equidistant sphere are analyzed. Finally, in comparison with the traditional Gauss projection as regards these distortion parameters, the Gauss projection based on the equidistant sphere is available in practice. Reference | Related Articles | Metrics