最新刊期
      卷 ， 期 2 ， 1995
      • Guo Defang
        Issue 2, (1995) DOI: 10.11834/jrs.1995017
        摘要：In this paper both home and abroad successful applications of remotesensing technology in direct Oil-gas exploration in recent years have been studiedsystematically.The summarization of spectral characteristics of Hydrocarbon andHydrocarbon halo and methods of extracting the Hydrocarbon micro-seepage infor-mation by computer are the basic and critical point of direct Oil-gas explorationusing remote sensing technology.  
        关键词：remote sensing image;Hydrocarbon micro-seepage;Information extra-ction   
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      • Zhu Qijiang
        Issue 2, (1995) DOI: 10.11834/jrs.1995012
        摘要：It’s very important for the decision division to imitate fire behaviorquantitatively.Fire spread has the features of time and space.That means it mustbe established under space background data base and must be fulfiled by the helpof GIS and RS.The occurrence and development of forest fire are infuienced by someinternal and external factors Internal factors include fuel type,fuel moister and to-pography.By using these factors we created the time map of fire spread in pixel. External factors are mainly attributed to the infulence of climate. We determinedwhether the pixel would burn or not according to the map of burning probability.We used both Rothermel model and experiential model for fire spread Meanwhiledirectional factors such as slope and wind were also taken into account.Finally wecompleted the fire spread in microcomputer based on GIS.  
        关键词：Fire spread;Geographic information system;Computer simulation;Remote sensed application   
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      • Issue 2, (1995) DOI: 10.11834/jrs.1995015
        摘要：In order to extract geo-science information from radar image,texturemust be considered besides gray tone.This paper deals with the characteristics oftexture in radar image and its extracting method.The value of texture informationin geo-science analysis is presented by a SIR-B Image in Huangyangzhen Area,Gan-su Province.  
        关键词：SIR-B image;Texture;Geo-science analysis   
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      • Issue 2, (1995) DOI: 10.11834/jrs.1995018
        摘要：The self-organization neural tree for the recognition about land covertype of remote sensing was presented in this paper,which a group of samples wasstudied.The successful rate was high.The results show that the neural networkmodel was good,and therefore it might be referred as an effective technique forthe recognition about land cover type of remote sensing.  
        关键词：Land cover type of remote sensing;Artificial neural Network;Self-organization neural tree model   
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      • Issue 2, (1995) DOI: 10.11834/jrs.1995019
        摘要：Cloud removing is a key to expand application of meteorological satel-lite data.This paper analyses the cloud reflectance in visible band and temperaturein thermal infrared band from their time and spatial distribution.It also puts for-ward to a serial of detecting cloud methods,including automatic detection usingreflectance of visible band and using temperature of thermal infrared band,detec-tion using the combination of them and using the threshold of cloudy region.Forcloudy region,the pixel values are substituted by the image data of same cycle andnear time after being calculated according their correlation with data of cloudyimage.The images have better effect in continuity and reality through above proces-sing.  
        关键词：cloud;Automatic detection;Data substitution   
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      • Tashpolat Tiyip
        Issue 2, (1995) DOI: 10.11834/jrs.1995016
        摘要：With the object of the simplicity of the algorithm,we proposed 2D-RGS（Two Dimensional Image Restoration Method with Gauss-Seidel Algorithm）method of image quality correction for satellite remotely sensed data.Incomparisonwith the restoration method using MTF,the results of this study are as follows:1) It was found that the 2D-RGS method is one of the most superior methodin image quality correction,because everyone can easily carry out the correctionand get the same results.2)The 2D-RGS method can be easily carried out by adjusting only two para-meters called the instrumental function and the dumping factor.CPU time is sho-ter also than correction with MTF.3)Getting efficiently results of applying it to different resolution of satelliteremotely sensed data.  
        关键词：image quality correction;2D-RGS method;Correction with MTF   
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      • Issue 2, (1995) DOI: 10.11834/jrs.1995021
        摘要：From the philosophical viewpoint necessity of integration of GPS,RS andGIS is introduced briefly,on the base of which authors prompt theoretical suport todata adaptation and it’s error model.At last a practical method and an example of3“S”integration are given.  
        关键词：S”Integration;Geographical information;Eeror model;Mode transferfunction   
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      • Issue 2, (1995) DOI: 10.11834/jrs.1995014
        摘要：In the investigation of forest resources and dvnamic monitoring,it isgenerally required to distinguish tree species.If the species are complicated,it iSalso required to distinguish the species groups with similar biological characteristics.In drawing the maps it is required to have great geometric accuracy.The mediumscale image with distinct type border（for example,the image of 1/25000）can becomposed and drawn directly.To meet the needs of the investigation of forest re-sources and dynamic monitoring,we conducted the study on information compound. It includ 5 the study on the practical techniques of remote sensing information com-pound,remote sensing and non-remote-sensing information compounds,applicationof auxiliary information,compound method,etc.In experiments,we used the studiesof the satellite images of MSS and TM,the images of different temporal images ofTM,the compound of TM and SPOT,the quantitative analysis of the characteristicchanges of information before and after compound,etc.Thus provide basis for op-timum wave-band combination and the method of extracting characteristic informa-tion,and also provide the best satellite images of 1/25000 on more than 500 thou-sand hectares of and for the investigation of forest resources in the region of BaiLong Jiang River to conduct the second type of the investigation of forest resour-ces.In the analysis of dynamic monitoring,the following land type were mainlydetermined:cut-over land, forest wall and regeneration of cut-over land, etc.;theassessment Of accuracy of determination was also conducted.  
        关键词：Information compound;Optimum wave-band;Combination;Extractcharacteristic information Dynamic monitoring   
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      • Issue 2, (1995) DOI: 10.11834/jrs.1995013
        摘要：Based on the soil erosion maps from remote sensing data at 1958-1982-1992 periods,the development of soil erosion and the transitions among soilerosion types in Yuexi of Anhui are quantitatively analysed during those two peri-ods.The transition probability matrices at two primary states（1958 and 1982）are establised with Point-Transition-Method.Then,the development and the futuretendency of soil erosion and its patterns are simulated and forecasted with Markovprocess.  
        关键词：Soil erosion;Markov process;Simulation and forecast   
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      • Issue 2, (1995) DOI: 10.11834/jrs.1995020
        摘要：Based on references both at home and abroad,the concept model,datamodel and functions of Temporal Geography Information System（TGIS） have beenstudied and evaluated.Developing TGIS which is built up on the base of topologi-cal structure of spatiotemporal data is trend of GIS.The strong TGIS with functionsof space-temporal data management and query,temporal interpolation and aggrega-tion,the tools of time-series and time-space analysis,visualization will promoteGIS to be used more intensively and extensively.  
        关键词：Spatiotemporal data;TGIS;Topological data structure   
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