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Analysis of microwave brightness temperature of lunar surface and inversion of regolith layer thickness:Primary results of Chang-E 1 multi-channel radiometer observation

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Science china(Information Sciences) 2010年第1期53卷 168-181页

作者： FA WenZhe & JIN YaQiu key laboratory of Wave Scattering and Remote Sensing Information (MoE), Fudan University, Shanghai 2.0433,{2. 1. key laboratory of Wave Scattering and Remote Sensing Information (MoE) Fudan University Shanghai 200433 China

In china’s first lunar exploration project, Chang-E 1 (CE-1), a multi-channel microwave radiometer was aboard the satellite, with the purpose of measuring microwave brightness temperature from lunar surface and surveying the global distribution of lunar regolith layer thickness. In this paper, the primary 62. tracks of swath data measured by Chang-E 1 microwave radiometer from November 2.07 to February 2.08 are collected and analyzed. Using nearest neighbor interpolation based on the sun incidence angle in observations, global distributions of microwave brightness temperature from lunar surface at lunar daytime and nighttime are constructed. Using the three-layer model (the top dust-soil, regolith and underlying rock media) for microwave thermal emission of lunar surface, the measurements of brightness temperature and dependence upon latitude, frequency and FeO+TiO2.content, etc. are discussed. On the basis of the ground measurements at Apollo landing sites, the observed brightness temperature at these locations are validated and calibrated by numerical three-layer modeling. Using the empirical dependence of physical temperature upon the latitude verified by the measurements at Apollo landing sites, the global distribution of regolith layer thickness is then inverted from the brightness temperature data of CE-1 at 3 GHz channel. Those inversions at Apollo landing sites are com- pared with the Apollo in situ measurements. Finally, the statistical property of regolith thickness distribution is analyzed and discussed.

关键词： Chang-E 1 multi-channel brightness temperature Apollo landing site physical temperature inversion of regolith layer thickness

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黄河流域坡高地系统最小生态需水研究

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山地学报 2004年第2期22卷 154-160页

作者：张远杨志峰北京师范大学环境学院北京师范大学环境学院水环境模拟国家重点实验室水沙科学教育部重点实验室北京 100875 中国环境科学研究院北京 100012水环境模拟国家重点实验室水沙科学教育部重点实验室北京 100875

以保护和恢复流域坡高地生态系统为目的,对坡高地最小生态需水问题进行研究,提出了坡高地生态需水和生态缺水的计算方法。以黄河流域为实例,在gis和遥感技术支持下对坡高地最小生态需水量和缺水量进行了计算,并从时空两个尺度揭示了黄... 详细信息

以保护和恢复流域坡高地生态系统为目的,对坡高地最小生态需水问题进行研究,提出了坡高地生态需水和生态缺水的计算方法。以黄河流域为实例,在gis和遥感技术支持下对坡高地最小生态需水量和缺水量进行了计算,并从时空两个尺度揭示了黄河流域坡高地生态系统最小生态需水的变化规律,研究成果可为流域生态环境建设和水资源合理配置提供依据。

关键词：生态需水坡高地系统时空变化黄河流域

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Design and Implementation of LANCANG River Basin Management Information System

Design and Implementation of LANCANG River Basin Management ...

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2.12.International Conference on Network and Computational Intelligence(ICNCI 2.12.

作者： Shi Lei 1 Huang Chong 1 Liu Gaohuan 1 Xie Chuanjie 1 Ran Fankun 2.1 state key {2. of Resources & Environment Information System Institute of Geographic Sciences and Natural Resources Research chinese academy of Science beijing 100101 2.6} University of Geosciences beijing 100083

This paper presents the techniques of gis and applies it into the management of the information system of LANCANG River Basin,providing a new managing pattern for the LANCANG River *** the construction of the integrated management information system of LANCANG River Basin,we realize the data sharing among LANCANG River Basin’s different departments which effectively uses data resources information scattered in various departments and improves utilization value of *** paper introduces the significance of LANCANG River Basin Integrated Management Information System and then describes the system framework,overall function and the database construction

关键词： LANCANG River Basin data information sharing management information system gis

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Information Detection of Seismic Debris Flow by UAV High-resolution Image Based on Transfer Learning

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Earthquake Research in china 2019年第1期33卷 112-119页

作者： GUO Jiawei LI Yongshu WANG Hongshu LU Heng WANG Xiaobo Faculty of Geosciences and Environmental engineering Southwest Jiaotong University Information Technology Center of Chengdu Planning and Management Bureau Department of surveying and mapping {2. Sichuan Water Conservancy Vocational College state key {2. of Hydraulics and Mountain River engineering Sichuan University College of Hydraulic and Hydroelectric engineering Sichuan University Provincial Geomatics Center of Qinghai Geomatics Technology and Application key laboratory of Qinghai Province

A large number of debris flow disasters(called Seismic debris flows) would occur after an earthquake, which can cause a great amount of damage. UAV low-altitude remote sensing technology has become a means of quickly obtaining disaster information as it has the advantage of convenience and timeliness, but the spectral information of the image is so scarce, making it difficult to accurately detect the information of earthquake debris flow disasters. Based on the above problems, a seismic debris flow detection method based on transfer learning(TL) mechanism is proposed. On the basis of the constructed seismic debris flow disaster database, the features acquired from the training of the convolutional neural network(CNN) are transferred to the disaster information detection of the seismic debris flow. The automatic detection of earthquake debris flow disaster information is then completed, and the results of object-oriented seismic debris flow disaster information detection are compared and analyzed with the detection results supported by transfer learning.

关键词： Earthquake Debris flow UAV high-resolution image Transfer learning Information detection

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Error matching detection and robust estimation adjustment approach for map conflation

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Science china(Technological Sciences) 2008年第S1期51卷 48-61页

作者： TONG XiaoHua & DENG SuSu Department of surveying and Geo-informatics,Tongji University,Shanghai 2.0092.china Tongji Univ Dept Surveying & Geoinfromat Shanghai 200092 Peoples R China

The conflation of geographic datasets is one of the key technologies in the realm of spatial data capture and integration in geographic information system (gis). Map conflation is a complex process of matching and merging spatial data. Due to various reasons such as errors in original data related to map data discrepancies,a great amount of uncertainties exists during the process and this will result in errors in featuring matching,especially point feature. Thus,it is vital to develop the method to detect the errors in feature matching and further the conflation results will not be affected. In this paper,error matching detection and robust estimation adjustment methods are proposed for map conflation. The characteristics of errors in feature matching are first analyzed,then a new approach for map conflation based on the least-squares adjustment is presented,and a robust estimation adjustment method is further proposed to detect and process matching errors. The results of the map conflation test show that the proposed method not only determines the errors in feature matching,but also obtains the optimal merging results in map conflation.

关键词： map conflation robust estimation error feature matching uncertainty

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基于形态插值的图像重建方法

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计算机工程与应用 2004年第18期40卷 26-28页

作者：段汕秦前清武汉大学测绘遥感信息工程国家重点实验室中南民族大学计算机科学学院武汉430074 中南民族大学计算机科学学院

该文提出了一种基于数学形态学的形态插值方法,该方法适用于对于二值图像、灰值图像以及多光谱图像的插值重构,通过形态插值技术将输入图像变换成保持某种特征的插值图像。所提出的方法是对基于测地距离函数和形态中值方法的扩展,以提... 详细信息

该文提出了一种基于数学形态学的形态插值方法,该方法适用于对于二值图像、灰值图像以及多光谱图像的插值重构,通过形态插值技术将输入图像变换成保持某种特征的插值图像。所提出的方法是对基于测地距离函数和形态中值方法的扩展,以提高插值方法的有效性为目的。该文还从应用的角度对于分割序列图像的插值重建算法进行了研究,所获得的新算法能较好地应用于各种类型图像的插值与形变。

关键词：形态插值形态算子数学形态学

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Virtual City Modeling for Visualization

Virtual City Modeling for Visualization

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ICIG’2.00 First International Conference on Image and Graphics--Image and Graphic Technology Toward 2.st Century and Beyond

作者： Chang Ge Qian Zengbo Xu Qing(Zhengzhou Institute of surveying and mapping Zhengzhou 450052. ({2. key laboratory of CAD&CG Zhejiang University Hangzhou 31002.)

＜正＞ Virtual reality （VR） is enjoying a tremendous attraction from researchers and software and hardware developers across several *** application in the context of urban planning presume the acquisition of virtual city models. A virtual city model consists of two parts. One part is 3D city CAD model in which the shape of the object surface is stored .The second part is the photo-texture where real world imagery or artificial texture is mapped to the faces of the building. In the approach presented in this paper, 3D city object model is reconstructed firstly, which generated from existing ground plans such as maps and plans or digital data in 2. geographic information system （gis）. Secondly, the resulting object model is filled with texture by projecting the original photographs onto it. At last, city model is stored in VRML format and realized stereoscopic viewing on the computer screen.

关键词： virtual reality virtual city models object model VRML stereoscopic

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Heterogeneous Face Biometrics Based on Guassian Weights and Invariant Features Synthesis

Heterogeneous Face Biometrics Based on Guassian Weights and ...

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2.11 IEEE 2.d International Conference on Computing, Control and Industrial engineering(CCIE 2.11)

作者： Mengyi Liu, Wei Xie, Xingwei Chen, Yufeng Ma, Yujing Guo, Jing Meng, Zhiyong Yuan School of Computer, Wuhan University Wuhan 430072. china Qianqing Qin state {2. laboratory of Information engineering in surveying, mapping & Remote Sensing Wuhan University Wuhan 430079, china

Face images captured in different spectral bands are said to be heterogeneous. Although the heterogeneous face images from a same individual are significantly different in appearance, we can still achieve multi-modal patterns matching by image processing and transforming. In this paper, we propose a novel recognition algorithm based on face synthesis from NIR （near infrared） to VIS （visual light）. For this first we use the illumination-invariant feature to construct face mapping function, then apply the correlation coefficient Gaussian kernel to determine the weights of synthesis components, and produce a synthesized VIS image corresponding to the query NIR image, thereby our problem is transformed to conventional homogeneous （VIS） face matching. Experimental results show that the proposed method effectively improves the recognition results.

关键词： Heterogeneous face biometrics Illumination- invariant feature Guassian weights Face synthesis mapping

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DESIGN OF GROUNDWATER LEVEL MONITORING NETWORK WITH ORDINARY KRIGING

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Journal of Hydrodynamics 2008年第3期20卷 339-346页

作者： YANG Feng-guang CAO Shu-you LIU Xing-nian YANG Ke-jun state key {2. of Hydraulics and Mountain River engineering Sichuan University Chengdu 610065China

The primary network of groundwater level observation wells aims at realizing a regional groundwater management policy. It may give a regional picture of groundwater level with emphasis on the natural situation. Observation data from the primary network can be used to estimate the actual state of groundwater system. Since the cost of the installation and maintenance of a groundwater monitoring network is extremely high, the assessment of effectiveness of the network becomes very necessary. Groundwater level monitoring networks are the examples of discontinuous sampling on variables presenting spatial continuity and highly skewed frequency distributions. Anywhere in the aquifer, ordinary kriging provides estimates of the variable sampled and a standard error of the estimate. In this article, the average Kriging standard deviation was used as a criterion for the determination of network density,and the gis-based approach was analysized. A case study of groundwater level network simulation in the Chaiwopu Basin, Xinjiang Uygur Autonomous Region,{2., was presented. In the case study, the initial phreatic water observation wells were 18, a comparison of the three variogram parameters of the three defferent variogram models shows that the Gaussian model is the best. Finally, a network with 55 wells was constructed.

关键词： ordinary Kriging variogram sill nugget effect range groundwater monitoring network

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Performance Analysis of BeiDou Satellite Navigation System （4IGSO+3GEO） in Standard Positioning and Navigation

Performance Analysis of BeiDou Satellite Navigation System ...

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第三届中国卫星导航学术年会

作者： Gao zhouzheng1,3,Zhang Hongping1,2.Hu Zhigang1,Pengjunhuan3 1.GNSS Research Center,Wuhan University,Wuhan 430079 2.state key {2. of Information engineering in surveying,mapping and Remote Sensing,Wuhan University,Wuhan 430079 3.Land Science Department china University of Geosciences,beijing 100083

Currently,BeiDou satellite navigation system can be used for real-time positioning and navigation with 4IGSO+3GEO satellites in the *** paper first briefly introduces some new progresses of BeiDou *** the distribution of BeiDou’s DOP value over the Pacific-Asia area is given according to current BeiDou Satellite’s *** evaluate and find bad satellite’s performance in running,we provide a simple way to detect BeiDou satellite’s abnormality by using continuous static observation *** processing 15 days’data obtained from several static stations and some dynamic observations collected in the field,we evaluate the accuracy of current BeiDou System’s positioning and *** results show that the horizon positioning accuracy is better than 2. meters while the vertical accuracy is better than 30 meter,the velocity accuracy is better than 0.4 meter/second.

关键词： BeiDou Satellite Navigation System Single Point Positioning GPS Precise Point Positioning Navigation Accuracy

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