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1.
International Journal of GeographicalInformation Science,2003,17(1)030601 利用多山地形DEMs和太阳辐射模拟计算地形参数的矢量代数算法=Vectorial Algebra Algorithms for Calcu-lating Terrain Parameters from DEMSand Solar Radiation Modelling in Moun-tainous Terrain[英]/Corripio J G.-1-  相似文献   

2.
《测绘科学》2001,26(4)
[1]Fedae K.ISO/TC 211 地理信息与地球信息学框架参考模型=ISO/TC 211 Geographic Information and Geomatics-A Framework and Reference Model.International Archives of Photogrammetry and Remote Sensing, Vol.33, B2, 2000. 7.13-16:Amsterdam:192~196 [2]Gong Jianya.组织和管理分布式地理信息=Organizing and Managing of Distributed Geographical Information.International Archives of Photogrmmetry and Remote Sensing,Vol.33,B2,2000.7.16-23:Amsterdam:220~226 [3]EhlerM.集成地理信息系统:从数据综合到集成分析=Integrated Grographic Information System:Data Integration to Integrated Analysis.International Archives of Photogrammetry and Remote Sensing,Vol.33,B6,2000.7.13-16:Amsterdam:172~178 [4]Dasgupta A.国家(自然)资源信息系统=The National( Natural)Resources Information System.International Archives of Photogrammetry and Remote Sensing,Vol.33,B2, 2000.7.13-16:Amsterdam:131~138 [5]Holland D.关于英国地形数据的全国数字化框架=A Digital National Framework for Topographic Data in Great Britain.International Archives of Photogrammetry and Remote Sensing,Vol,33,B2,2000.7.16-23:Amsterdam:303~308 [6].适合海道测量的最佳多波束回声测深仪=Towards Adequate Multibeam Echosounders.The International Hydrographic Bureau.The International Hydrographic Review,2000(1):67~80 [7]俄罗斯国家导航与海道测量研究所简介=Introduction of Gos. NINGI.Information Letter of Gos. NINGI, MOD:2001,5 [8]机载激光测深仪(LADS)=Airborne Laser Sounder.Journal of Hydrographic Surveying.-2001(4):14~20 [9]Vassilia K.GIS和遥感在发展中国家城市土地利用谈判中的应用=The Contribution of GIS and Remote Sensing in Urban Land Use Negotiation in Developing Countries.International Archives of Photogrammetry and Remote Sensing,vol.33,B7/2,2000.7.13-16:Amsterdam:646~653 [10]Alexander K.GIS技术用于研究和监测格陵兰冰层=Studying and Monitoring the Greenland Ice Sheet Using GIS Techniques.International Archives of Photogrammetry and Remote Sensing,vol.33,B7/2,2000.7.13-16:Amsterdam:678~685 [11]Efim K.高分辨率卫星数据用于评估小麦作物的生产率参数=Estimation on the Productivity Parameters on Wheat Crops Using High Resolution Satellite Data.International Archives of Photogrammetry and Remote Sensing,vol.33,B7/2,2000.7.13-16:Amsterdam:717~722 [12]Franz K.轨道遥感数据和地学处理技术用于城市可持续性研究=Urban Sustainability Using Orbital Remote Sensing Data and Geoprocessing Techniques.International Archives of Photogrammetry and Remote Sensing,vol.33,B7/2,2000.7.13-16:Amsterdam:728~732 [13]Gulch E.关于制图要素自动化提取的数字系统=Digital Systems for Automated Cartographic Feature Extraction.International Archives of Photogrammetry and Remote Sensing,Vol.33,B2,2000.7.13-16:Amsterdam:241~256 [14]Allan L.陆军测量局数字摄影测量及其发展=Digital Photogrammetry,Developments at Ordnance Survey.International Archices of Photogrammetry and Remote Sensing,Vol,33,B2,2000.7.16-23:Amsterdam:46~51 [15]Habib A.解决摄影测量中匹配问题的新方法=New Approach to Solving Matching Problems in Photogrammetry.International Archives of Photogrammetry and Remote Sensing ,Vol.33,B2,2000.7.16-23:Amsterdam:257~264 [16]Hild H.影像-地图自动化配准方法=A Strategy for Automatic Image to Map Registration.International Archives of Photogrammetry and Remote Sensing,Vol.33,B2,2000.7.13-16:Amsterdam:287~294 [17]Mckeown D M.自动化特征提取的性能评价=Performance Evaluation for Automatic Feature Extraction.International Archives of Photogrammetry and Remote Sensing,Vol.33,B2,2000.7.13-16:Amsterdam:379~394 [18]Raizman Y.以色列国家GIS数据库的三维数字摄影测量更新=Three-dimensional Digital Photogrammetric Update of Israeli National GIS Data Base.International Archives of Photogrammetry and Remote Sensing,Vol.33,B2,2000.7.16-23:Amsterdam:443~448 [19]Saleh R.软拷贝摄影测量生产的成本与利润=The Cost and Benefits of Softcopy Photogrammetric Production.International Archives of Photogrammetry and Remote Sensing,Vol.33,B2,2000.7.13-16:Amsterdam:476~481 [20]Straub B M.图像自动化判读用于GIS更新=Towards the Automatic Interpretation of Images for GIS Update.International Archives of Photogrammetry and Remote Sensing,Vol.33,B2,2000.7.13-16:Amsterdam:525~532 [21]Mikhail E M….多源特征提取与城市环境可视化=Multi-source Feature Extraction and Visualization in Urban Environments.International Archives of Photogrammetry and Remote Sensing, Vol.33, B3/2,2000.7.16-23:Amsterdam:592~607 [22]Niederst M….精密摄影测量目标重建的通用数学模型=Generalized Mathematical Model of Precise Photogrammetry Reconstruction of the Objects.International Archives of Photogrammetry and Remote Sensing, Vol.33, B3/2,2000.7.16-23:Amsterdam:635~642 [23]Shan J….利用GIS数据的影像自动定向=Automatic Image Orientation by Using GIS Data.International Archives of Photogrammetry and Remote Sensing, Vol.33,B3/2,2000.7.16-23:Amsterdam:831~836 [24]Scaioni M.航空三角测量自动化系统的概念与测试=Concept and Testing of an Automatic System for Aerial Triangulation.International Archives of Photogrammetry and Remote Sensing,Vol.33,B2,2000.7.16-23:Amsterdam:486~493 [25]Murai S.利用INS与GPS的集成系统开发机载三线扫描仪分析车速分布=The Development of Airborne Three Line Scanner with High Accuracy INS and GPS for Analysing Car Velocity Distribution.International Archives of Photogrammetry and Remote Sensing,Vol.33,B2,2000.7.13-16:Amsterdam:416~421 [26]Rajendram S.基于GIS的一体化土地利用/覆盖变化模型用于研究人与土地的相互关系=A GIS Based Integrated Land Use/Cover Change Model to Study Human-land Interactions.International Archives of Photogrammetry and Remote Sensing,vol.33,B7/3,2000.7.13-16:Amsterdam:1212~1219 [27]Shi Zhongchao.GIS数据库修测:问题与解法=GIS Database Revision-The Problems and Solutions.International Archives of Photogrammetry and Remote Sensing,Vol.33,B2,2000.7.13-16:Amsterdam:494~501 [28]Quadros C J.农业生产率的空间模拟:印度农业生态系统研究=National Level Spatial Modeling of Agricultural Productivity:Study of Flooded Agroecosystem.International Archives of Photogrammetry and Remote Sensing,vol.33,B7/3,2000.7.13-16:Amsterdam:1191~1198 [29]Wang Mi.研究GPS信号与道路信息用于机动导航系统=Research on Match of GPS Signal and Road Information for Mobile Navigation System.International Archives of Photogrammetry and Remote Sensing,Vol.33,B2,2000.7.16-23:Amsterdam:598~602 [30]光栅海图显示系统与电子海图显示与信息系统的差异=Differences Between RCDS and ECDIS.International Maritime Organization∥SN/Cir.207 [31]In-joon K.利用空间不变的神经网络进行图像分类=Image Classification by Spatial Shift Invariant Neural Network.International Archives of Photogrammetry and Remote Sensing,vol.33,B7/2,2000.7.13-16:Amsterdam:636~639 [32]Yousif H.遥感技术在可持续性森林管理中的用途=Inventory of Remote Sensing Applications in Forestry for Sustainable Management.International Archives of Photogrammetry and Remote Sensing,vol.33,B7/2,2000.7.13-16:Amsterdam:575~579 [33]Waileung L.图像压缩技术对图像分类的影响=The Effects on Image Classification Using Compression Technique.International Archives of Photogrammetry and Remote Sensing,vol.33,B7/2,2000.7.13-16:Amsterdam:744~751 [34]Marek M. 遥感观测值用于火山监测和减灾=Remote Sensing Observations for Volcano Monitoring and Hazard Mitigation.International Archives of Photogrammetry and Remote Sensing,vol.33,B7/3,2000.7.13-16:Amsterdam:905~909 (摘自<测绘文摘>)  相似文献   

3.
R .Daeh,G.Beutler,U.Hugentobler,S.Sehaer,T.Sehildkneeht,T.Springer,G.Dudle,IJ.ProstTime transfer using GPS earrier phase:error propagation and results利用GPS载波相位传递时间的误差传播及其结果M .King,R.Colemar,IJ.N.Nguyen:SPurious periodie horizontal signals in sub一daily GPS Position estimates亚周日GPs位置估算中的伪周期性水平信号A .IJannes,S.Dur:Dual algebraie formulation of differential GPS差分GPS的双代数公式J .Klokoenik,J .Kosteleeky,R.H.Gooding:On fine orbit seleetion …  相似文献   

4.
[1]Castleman K R.Digital image processing.Englewood Cliffs,NJ:Prentice Hall,1996 [2]Carr J R,Miranda F P.Spectral and texture classification of single and multiple band images.Computers &amp; Geosciences,1996,22(8):849~865 [3]Chen S P,Zhen W.Conciseness of remote sensing mineral resources exploration.Science and Technology Publishing House,1994(in Chinese) [4]Costanitini M,Farina A,Zirilli F.The fusion of different resolution of SAR images.Proceeding of IEEE,1997,85(1):139~146 [5]Dong Q,Fang H L.The use of variogram in remotely sensed images.Journal of Remote Sensing and Application,1997,12(1):7~13(in Chinese) [6]De Jong S M,Burrongh P A.A fractal approach to the classification of Mediterranean vegetation types in remotely sensed images.PE &amp; RS,1995(61):1 041~1 053 [7]Fang H L,Qian G H.Fusion of ADEOS-AVNIR panchromatic and multispectral image data using principle component analysis.Journal of Remote Sensing and Application,1998,13(3):48~53(in Chinese) [8]Franklin S E,Wulder M A,Lavigne M B.Automated derivation of geographic window size for use in remote sensing digital image texture analysis.Computers &amp; Geosciences,1996,22(6):665~673 [9]He J G,Zhu C G.Methods for data fusion between satellite-boarded SAR and multi-satellite remote sensing.Journal of Earth-science Information,1997 (16):29~33(in Chinese) [10]Jia Y H.A data fusion method for spatial resolution enhancement of remotely sensed multi-spectral images.Journal of Remote Sensing and Application,1997,12(1):19~33(in Chinese) [11]Jin G L,Qiu Z C.A research on information amount of multi-spectral images.Acta Geodaetica et Cartographica Sinica,1992,21(2):101~107(in Chinese) [12]Kang Y H.Theories of data fusion.Xi‘an:Xi‘an Electronic University Press,1997(in Chinese) [13]Li H,et al. Multi-sensor image fusion using the wavelet transform.Graphical Models and Image Processing,1995,27(3):235~244 [14]Liu J G.Digital image processing of remotely sensed imagery data.Imperial College of Science,Technology and Medicine,1997 [15]Liu J G,McM J.Moore:Pixel block intensity modulation: adding spatial detail to TM band 6 thermal imagery.Int.J.Remote sensing,1998,19(13):2 477~2 491 [16]Lou Z,Zhu C G.Multi-variate statistics fusion of TM images.Journal of Aero-computational Technology,1998,28(3):40~42(in Chinese) [17]Peng W N.Statistical methods for geo-data processing.Wuhan:Wuhan College of Geology,1983(in Chinese) [18]Richard J R.Remote sensing digital image processing.an introduction,Berlin:Springer-Verlag,1999 [19]Wang R S.Image understanding.Changsha:National Defense University Press,1995(in Chinese) [20]Winkler G.Image analysis.Random Fields and Dynamic Monte Carlo Methods (A Mathematical Introduction),Berlin:Springer-Verlag,1995  相似文献   

5.
[35]Braun M,Rau F.Using a multi_year data archive of ERS SAR imagery for the monitoring of firn line positions and ablation patterns on the King George Island ice cap (Antarctica).The Workshop of EARSeL Special Interest Group:Remote Sensing of Land Ice and Snow.Dresden,2000(published on CD_Rom in 2001) [36]Rau F,Braun M,Friedrich M,et al.Radar glacier zones and its boundaries as indicators of glacier mass balance and climatic variability.The Workshop of EARSeL Special Interest Group:Remote Sensing of Land Ice and Snow.Dresden,2000(published on CD_Rom in 2001) [1]Bahr D B.Global distribution of glacier properties:A stochastic scaling paradigm.Water Resource Research,1997,33(7):1 669~1 679 [2]Bahr D B,Meier M F.Snow patch and glacier size distributions.Water Resource Research,2000,36(2):495~501 [3]Braun M,Schneider C.Characteristics of summer energy balance on the west coast of the Antarctic Peninsula.Annals of Glaciology,2000,31:179~183 [4]Braun M,Rau F,Saurer H,et al.The development of radar glacier zones on the King George Island Ice Cap (Antarctica) during the Austral summer 1996~1997 as observed in ERS_2 SAR data.Annals of Glaciology,2000,31:357~363 [5]Calvet J,Corbera J,Furada G.Variacion del frente glaciar en Bahia Sur y Punta Siddons entre 1956 y 1991,Isla Livingston,Islas Shetland del Sur.In: L&#243;pez_Martinez,J.: Geolog&#237;a de la Ant&#225;rtida Occidental.III Congreso Geol&#243;gico de Espana y VIII Congreso Latinoamericano de Geolog&#237;a,Salamanca,Espana,1992.283~292 [6]Doake C S M,Vaughan D G.Rapid disintegration of the Wordie Ice Shelf in response to atmospheric warming.Nature,1991,350(6 316):328~330 [7]Doake C S M,Corr H F J,Rott H,et al.Break_up and conditions for stability of the northern Larsen Ice Shelf,Antarctica.Nature,1998,391:778~780 [8]Fox A J,Cooper A P R.Climate_change indicators from archival aerial photography of the Antarctic Peninsula.Annals of Glaciology,1998,27:636~642 [9]Harangozo S A,Colwell S R,King J C.An analysis of a 34_year air temperature record from Fossil Bluff (71&#176; S,68&#176; W),Antarctica.Antarctic Science,1997,9(3):355~363 [10]Hulbe C L.Recent changes to Antarctic Peninsula ice shelves: what lessons have been learned? Natural Science,1997,1(6) [11]Jones P D.Antarctic temperatures over the present century——a study of the early expedition record.Journal of Climate,1990,3:1 193~1 203 [12]Kieffer H and 41 others.New eyes from the skye measure glaciers and ice sheets.EOS,2000,81(24):265,270~271 [13]King J C.Recent climate variability in the vicinity of the Antarctic Peninsula.International Journal of Climatology,1994,14:357~369 [14]King J C,Harangozo S A.Climate change in the western Antarctic Peninsula since 1945: observations and possible causes.Annals of Glaciology,1998,27:571~575 [15]Klser H,Arntz W E.RASCAL (RESEARCH on Antarctic Shallow Coastal and Litoral systems).Untersuchungen zur Struktur und Dynamik eines antarktischen K&#252;stenjosystems.Polarforschung,1994,64(1):27~41 [16]Klser H,Ferreyra G,Schloss I,et al.Hydrography of Potter Cove,a small fjord_like inlet in King George Island,South Shetands.Estuarine,Coastal and Shelf Science,1994,38:523~537 [17]Lucchitta B K,Rosanova C E.Retreat of northern margins of George VI and Wilkins Ice Shelves,Antarctic Peninsula.Annals of Glaciology,1998,27:41~46 [18]Morris E M.Surface ablation rates on Moraine Corrie Glacier,Antarctica.Global and Planetary Change,1999,22:221~231 [19]Park B K,Chang S K,Yoon H I,et al.Recent retreat of ice cliffs,King George Island,South Shetland Islands,Antarctic Peninsula.Annals of Glaciology,1998,27:633~635 [20]Rakusa_Suszczewski S.The maritime Antarctic coastal ecosystem of Admiralty Bay.Department of Antarctic Biology,Polish Academy of Sciences,Warsaw,1993.216 [21]Rakusa_Suszczewski S.The hydrography of Admiralty Bay and its inlets,coves and lagoons (King George Island,Antarctica).Polish Polar Research,1995,16(1/2):61~70 [22]Rau F,Braun M,Saurer H,et al.Multi_year snow cover dynamics on the Antarctic Peninsula using SAR imagery.Polarforschung,2000,67(1/2):27~40 [23]Rott H,Skvarca P,Nagler T.Rapid Collapse of northern Larsen Ice Shelf,Antarctica.Science,1996,271:788~792 [24]Rott H,Rack W,Nagler T,et al.Climatically induced retreat and collapse of northern Larsen Ice Shelf,Antarctic Peninsula.Annals of Glaciology,1998,27:86~92 [25]Skvarca P,Rack W,Rott H,et al.Evidence of recent climatic warming on the eastern Antarctic Penisnula.Annals of Glaciology,1998,27:628~932 [26]Simes J C,Bremer U F,Aquino F E,et al.Morphology and variations of glacial drainage basins in the King George Island ice field,Antarctica.Annals of Glaciology,1999,29:220~224 [27]Smith A M,Vaughan D G,Doake C S M,et al.Surface lowering of the ice ramp at Rothera Point,Antarctic Peninsula,in response to regional climate change.Annals of Glaciology,1998,27:113~118 [28]Smith R C,Stammerjohn S E,Baker K S.Surface air temperature variations in the western Antarctic Peninsula region.Antarctic Research Series,1996,70:105~121 [29]Splettstoesser J.Antarctic Global Warming? Nature,1992,355(6 360):503 [30]Stark P.Climatic warming in the central Antarctic Peninsula area.Weather,1994,49(6):215~220 [31]Turner J,Colwel S R,Harangozo S.Variability of precipitation over the coastal western Antarctic Peninsula from synoptic observations.Journal of Geophysical Research,1997,102(D12):13 999~14 007 [32]Warren C R.Iceberg calving and the glaciomarine record.Progress in Physical Geography,1992,16(3):253~282 [33]Wunderle S.Die Schneedeckendynamik der Antarkische Halbinsel und ihre Erfassung mit aktiven und passiven Fernerkundungsverfahren.Freiburger Geographische Hefte,1996,48:172 [34]Braun M,Saurer H,Vogt S,Simes J C,et al.The influence of large_scale atmospheric circulation on surface energy balance on the ice cap of King George Island.International Journal of Climatology,2001,21(1):21~36  相似文献   

6.
Book Review     
Title: Spatial Data Analysis: Theory and Practice Author: Professor Dr. Robert Haining Publisher: Cambridge University Press, 2003 Reviewer:Professor Dr. ZHANG JingxiongThis book by Robert Haining represents a broad-ranging treatment of spatial data analysis. The book has ful-filled its objectives claimed by the author,  相似文献   

7.
[1]Liu D J,Shi W Z,Tong X H,et al.Precision analysis and quality cont rol of GIS spatial data.Shanghai:Shanghai Publishing House of Scientific Documen ts,1999 [2]Chen X R,Fang Z B,Li G Y,et al.Non_parameter statistics.S hanghai:Shanghai Publishing House of Science and Technology,1989 [3]Li Q H,Tao B Z.Application of probability statistical theory in survey ing.Beijing:Beijing Publishing House of Surveying and Mapping,1982 [4]Sun H Y.p_norm distribution theory and its application in surveyin g data processing:[Ph.D Thesis].Wuhan:Wuhan Technical University of Surveying and Mapping,1995  相似文献   

8.
Contributions are welcomed on one of the following subjects or in related areas: GIS Geodynamic Physical geo-surveying GPS Geo-surveying Engineering surveying RS Photogrammmetry Mapping apparatus Cartology GraphicsPaper submitted in the electronic text on a diskette should be sent along with two printed copies. The main text should be preceded by the abstract of no more than 300 words,followed by key words. Full references should be listed in the order of the citations in the text under the  相似文献   

9.
IntroductionIf let roadway entities be denoted by arcs and in-tersections be denoted by nodes, then a road net-work can be represented with node-arc model. Be-cause the designation of nodes can be determinedby arcs according to the definition of node-arc mod-el, howto designate arcs becomes the key of repre-senting a road network. As described in the firstpaper of the series, all four kinds of roadway enti-ties (i.e., streets, road segments, carriageways,and lanes) can be represented by arcs. …  相似文献   

10.
Application of GIS to estimate soil erosion using RUSLE   总被引:9,自引:0,他引:9  
This paper describes the use of the Arc/Info and ArcView GIS tools to estimate soil erosion with Universal Soil Loss Equation (USLE).Calculations are be done by using capabilities available.This study start with a digital elevation model(DEM) of Shaanxi,which was created by digitizing contour and spot heights from the topographic map on 1:250000 scale and grid themes for the USLE K and C factors.It is note worthy that USLE K can be obtained by adding the K factor as an attribute to a soil theme‘s table.The C can be obtained from tables or using the information about land use and management given by USLE program.A land use theme can be used to add the C factors as an attribute field.The purpose of this study is to establish spatial information of soil erosion using USLE and GIS and discuss the analysis of the soil erosion and slope failures in GIS and formulate the possible framework.  相似文献   

11.
This study applied a computerized parametric methodology to monitor, map, and quantify land degradation by salinization risk detection techniques at a 1:250 000 mapping scale using geo-information technology. The northern part of the Shaanxi province in China was taken as a case. Multi-temporal remotely sensed materials of both Landsat TM and thematic maps (ETM+) were used as the bases to provide comprehensive views of surface conditions such as vegetation cover and salinization detection. With ERDAS ver. 9.1 software, the Normalized Differential Salinity Index (NDSl) and Salinity Index (S.I.) were computed and then evaluated for land degradation by salinization. Arc/Info ver. 9.2 software was used along with field observation data (GPS) for analysis. Using spatial analysis methods, results showed that 19 973.1 km^2 (72%) of land had no risk of land degradation by salinization, 3 684.7 km^2 (13%) had slight land degradation by salinization risk, 2 797.9 km^2 (10%) had moderate land degradation by salinization risk, and 1 218.9 km^2 (4%) of the total land area was at a high risk of land degradation by salinization. The study area, in general, is exposed to a high risk of soil salinization.  相似文献   

12.
This paper describes the operational issues and basic technical requirements of modern aerial photogrammetry. The accuracy of photogrammetric point determination and the y-parallax at corresponding model points is analyzed when stereo models are reconstituted by using the exterior orientation elements of aerial images. Real aerial photographs, at image scales from 1:2 500 to 1:6 0000, with DGPS/IMU data taken from various topographies in China were processed by our POS-supported bundle block adjustment program WuCAPS. The empirical results verified that the accuracy of the exterior orientation elements from bundle block adjustment meets the requirements of the specifications of topographic mapping. However, the accuracy of the exterior orientation elements determined by POS fails to meet the requirements of the specifications of topographic mapping.  相似文献   

13.
14.
LD2000 System with 3S and Multi—sensor   总被引:2,自引:0,他引:2  
This paper introduces a car-borne road information collecting and updating system (LD2000) developed by Wuhan Technical University of Surveying and Mapping.This system is capable of collecting road network information and creating digital road network effectively by means of GPS,GIS and multi-sensor integration.The design and development of LD 2000 system are also presented in this paper.  相似文献   

15.
A practical method for visualizing flood area and evaluating damage is presented, which consists of two technical approaches: self-programming and adapting commercial GIS platforms. The low-cost and easy-to-use GIS-Based model developed by self-programming can meet current requirements of most local authorities, especially in developing countries. In this model, two cases, non-source flood and source flood, are distinguished and the Seed-spread algorithm suitable for source-flood is discussed; The flood damage is assessed by overlaying the flood area range with thematic maps and other related social and economic data. and all the-matic maps are converted to raster format before overlay analysis. Two measures are taken to improve the operation efficiency of speed seed-spread algorithm. The accuracy of the model mainly depends on the resolution and precision of the DEM data, and the accuracy of registering all raster layers and the quality of attribute data.  相似文献   

16.
An algorithm (differential mode) is presented for the improvement of harmonic tidal analysis along T/P tracks, in which the differences between the observed sea surface heights at adjacent points are taken as observations. Also, the observation equations are constrained with the results of the crossover analysis; the parameter estimations are performed at 0.1° latitude intervals by the least squares. Cycle 10 to 330 T/P altimeter data covering the China Sea and the Northwest Pacific Ocean (2°-50°N,105°-150°E) are adopted for a refined along-track harmonic tidal analysis, and harmonic constants of 12 constituents in 8 474 points are obtained, which indicates that the algorithm can efficiently remove non-tidal effects in the altimeter observations, and improve the precision of tide parameters. Moreover, parameters along altimetry tracks represent a smoother distribution than those obtained by traditional algorithms. The root mean squares of the fitting errors between the tidal height model and the observations reduce from 11 cm to 1.3 cm.  相似文献   

17.
The research attempts to find out how the location of the CBD(central business district), the dis- tance to the main roads, the distribution of the public facilities, and the urban land-use pattern influence the urban residential land value variations. The study begins by identifying the influences into two categories: general circumstance and micro/neighboring circumstances. Benchmark price and market land value are tested to be the results influenced by general circumstance and both the influential range and the influential force of individual land-use are investigated and compared. At last explicit case comparisons are also taken for testing the result. The finding of the research is not only useful for understanding the spatial patterns of land values, but also beneficial for the policy-makers concerning land administration and urban planning.  相似文献   

18.
Xu  Jun  Bao  Jingyang  Liu  Yanchun  Yu  Caixia 《地球空间信息科学学报》2008,11(1):17-20
An algorithm (differential mode) is presented for the improvement of harmonic tidal analysis along T/P tracks, in which the differences between the observed sea surface heights at adjacent points are taken as observations. Also, the observation equations are constrained with the results of the crossover analysis; the parameter estimations are performed at 0.1° latitude intervals by the least squares. Cycle 10 to 330 T/P altimeter data covering the China Sea and the Northwest Pacific Ocean (2°-50° N,105°-150° E) are adopted for a refined along-track harmonic tidal analysis, and harmonic constants of 12 constituents in 8 474 points are obtained, which indicates that the algorithm can efficiently remove non-tidal effects in the altimeter observations, and improve the precision of tide parameters. Moreover, parameters along altimetry tracks represent a smoother distribution than those obtained by traditional algorithms. The root mean squares of the fitting errors between the tidal height model and the observations reduce from 11 cm to 1.3 cm.  相似文献   

19.
A method for shadow detection and compensation for color aerial images is presented. It is consid-ered that the intensity value of each image pixel is the product of illumina-tion function and ground object reflec-tion, and the shadowed regions on the image are mainly caused by the short of illumination, so the information compensation for the shadowed re-gions should concentrate on the illumi-nation adjustment of concerned area on the basis of the analysis of whole im-age. The shadow detection and com-pensation procedure proposed by this paper consists of four steps.  相似文献   

20.
Geo-Spatial Data Transfer Standard is an important part of "National Spatial Data Infrastructure(NSDI)" ,as well as a necessary means for data sharing. "Chinese National Geo-Spatial Data Transfer Format (CNSDTF)" was approved by National Quality Technology Supervise Bureau in 1999 with the standard serial number of 17798-1999. It is designed to support vector and raster spatial data. This paper describes the vector part of CNSDTF, including design ideas, main characters, conceptual model, definition of spatial object, and file structure.  相似文献   

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