最新刊期
      卷 ， 期 4 ， 1996
      • Issue 4, (1996) DOI: 10.11834/jrs.1996039
        摘要：The geometric accuracy of digitally mosaicked TM image is analyzed in this paper. There are some defects to maintain geometric accuracy of the mosaicked TM image by control points selection. The geometric error of the mosaicked image is aboat 8 pixels. The rotating method is easy to use for registering TM image, meanwhile it keeps the geometric accuracy of the mosaicked TM image. The geometric error of the mosaicked image by rotating method is less than 2 pixels.  
        关键词：TM;Mosaic;geometric accuracy   
        129
        |
        249
        |
        23
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 10634240 false
        发布时间：2021-06-10
      • Issue 4, (1996) DOI: 10.11834/jrs.1996038
        摘要：There is the information content of atmospheric water vapour in direct solar radiation measured with a solar spectrometer. A deduction approach is presented for retrieving the columnar water vapour content. On the basis of the random model rather,than the Bouguer Law, the retrieval for water vapour absorption is more reasonable. Three Water vapour absorbing bands, α, β, ρ στ, are selected in the joint deduction of water vapour content。 It is shown that the columnar water .vapour content from the remote sensing data is quite consistent with that from radiosonde data.  
        关键词：Atmosphere;Columnar water vapour content;remote sensing;radiosonde   
        103
        |
        152
        |
        2
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 10634255 false
        发布时间：2021-06-10
      • Issue 4, (1996) DOI: 10.11834/jrs.1996037
        摘要：A comprehensive, analytical model for calculating bidirectional reflchnce factor（BRF） of multicomponent vegetation canopies [1] is employed to study the influence of canopy spatial stricture on the commonly used normaled difference vegetation index（NDVI）. The dependencies of NDVI on leaf （or other forliage elements） angle distribution（LAD）, dimension of foliage elements（e.g., leaf）, foliage dispersion mode and the areal feac tion of non-leaf organs are discussed, and the variation of NDVI with solar /viewing zenith is examined. The result shows that the spatial inhomogeneity of canopy architecture and the optical properties of foliage elements siedficanhy affect the magnitude and angular distribution of NDVI for canopies even with a fixed leaf area index （LAI） Usually, the angular variation of NDVI is pronounced. And it is unlikely to correctly estimate LAI through NDVI without a prior knowledge of the spatial dispersion mode of foliage elements or if the optical properties of different foliage elements much differ. But for a canopy consisting of randomly dispersed foliage elements, effects of other architectural parameters of canopy on LAI estimation can be minimized by using spectral data far away from the hotspot direction.  
          
        167
        |
        381
        |
        20
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 10634278 false
        发布时间：2021-06-10
      • Issue 4, (1996) DOI: 10.11834/jrs.1996041
        摘要：Geographic information System （GIS） and remote sensing make it practicable for nonstructural measures, multidisciplinary, which is one of the effective methods for reducing damage caused by flood and waterlog disaster. The authors make a systemtic exposition of application of GIS in digital simulating flood-waterlog harzard and evaluating the loss within river basin from disigning of basin database, numeral simulating flood harzard forecasting and flood routing in river course and floodplain, modeling victims dispersion, etc. It provides a basic framework for developing similar research in the future.  
        关键词：GIS;Basin flood-waterlog harzard;Digital models;Evaluating damage caused by flood-waterlog;Cao-e river basin   
        155
        |
        669
        |
        70
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 10634296 false
        发布时间：2021-06-10
      • Issue 4, (1996) DOI: 10.11834/jrs.1996040
        摘要：Spatial Index is one of the key techniques that play an important role in spatial database and GIS. Currently, with the quick price reduction of computer main memory, It is possible to develop main memory spatial database. Main memory spatial database needs its own spatial indices. Two kinds of main memory oriented spatial indices have been put forward in this paper, the basic ideas of which can be traced back to disk oriented spatial index. These two main memory spatial indices are main memory grid index and main memory fieldtree index. Chomparison of these two spatial indices has been made. Test results show that in most case the main memory fieldtree index gives better performance over the grid index.  
        关键词：Spatial database;GIS;Main memory spatial database;Spatial index;Grid index;Fieldtree index   
        106
        |
        143
        |
        27
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 10634325 false
        发布时间：2021-06-10
      • Issue 4, (1996) DOI: 10.11834/jrs.1996031
        摘要：Coal fire is a commonly existed disaster in coal fields of northen China, it burnt huge amount of coal resource. Firefighting is a long-term and tough job.Thermal infrared images of TM band 6 show us temperature information, which depends on solar radiance and ground heat. Based on remote sensing principle, this paper focuses on using DTM to improve the accuracy of detecting coal fires with thermal infrared images. On the resultant image thermal anomaly caused by coal fire is much clear, this is helpful for firefighting and dynamic monitoring. Junnan coal field was selected as a test area. Several pictures were displayed for the result.  
          
        119
        |
        126
        |
        4
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 10634344 false
        发布时间：2021-06-10
      • Issue 4, (1996) DOI: 10.11834/jrs.1996035
        摘要：According to the appearance on which nonuniformity of surface on the earth reflect deep structural nonuniformity, the paper studies the transverse structures, acrossing the Tianshan orogen, by morphostructural analysis based on NOAA AVHRR and LANDSAT MSS images. Formed in Variscan orogeny and due to multiperiodic activities, they appear to have diffuse belt and neotectonic feature, con sisting of series if tensional fractures and faults. Interpretation on image and geophysical survey suggest that they have deep seating and probably extend to lower-crust. More important, intersecting area of transverse structure and strike ones usually indicate the position of large metal deposit. Therefore, remote sensing survey of transverse structure is significance for prospecting metal deposits.  
        关键词：remote sensing;Transverse structure;Tianshan   
        102
        |
        161
        |
        17
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 10634128 false
        发布时间：2021-06-10
      • Issue 4, (1996) DOI: 10.11834/jrs.1996030
        摘要：The influences of simulated acid rain on the characteristics of reflectance spectra of rice leaves are described in this paper. The results show that acid rain could cause: increase of the reflectances in the visible and middle infrared waveband, decrease of the reflectances in the near infrared waveband, blue-shift of the first and second derivative spectra. There are relationships among the above changes and the pH-values of acid rain the vedeties and growth stages of rice. These results have proved it is possible to monitor the pollution of acid rain on crops using remote sensing.  
        关键词：Simulated acid rain;Reflectance spectra;rice   
        103
        |
        135
        |
        23
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 10634144 false
        发布时间：2021-06-10
      • Issue 4, (1996) DOI: 10.11834/jrs.1996033
        摘要：The key point for gold exploration using remote sensing technology is the information extraction of ore-forming structures and the spectral character of the ferroxides and alterated hydrous dinerals. JERS-1 SAR is of great potential in structural extraction, which can be achieved by suppressing the speckled noise and edge enhancement using spatial filters. With the help of principal component analysis of the band or ratio imagery of the landsat TM, the spectral character of alterated minerals can be extracted, while the influnce of the vegetation can be suppressed. Both alteration and structural information can be extracted by the integration of the two above remote sensing data.  
        关键词：JERS- 1 SAR;Landsat TM;Image integration;Information extraction   
        121
        |
        208
        |
        28
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 10634168 false
        发布时间：2021-06-10
      • Wang Zhihua
        Issue 4, (1996) DOI: 10.11834/jrs.1996036
        摘要：Batal on the interpretation of the colour infrared aerophoto （1: 67000） and site verification, the Qaojia slope is considered as a huge ancient landslide which shows typical landslide features, pushing the Jin Sha River and formed an abnormal curve channel, and is coved with loose soil and debris. Qaojia slope, surrunded with large scale active faults is located in the west wing of an anticline and consists of layers prone to slide. The earthquakes there have for intense and frepuent.Heavy rainfall always concentrate in rain season. The landslide occurred about 100,000 years ago.Now,the whole landslide is already stable, but secondary collapse, landslides, and debrisflowes have been developed near the scarp and on the slide body.  
        关键词：Landslide features;Ancient landslide;Geological environment;Whole land slide;Secondary collapse;Landslides;Debrisflowes   
        245
        |
        423
        |
        14
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 10634185 false
        发布时间：2021-06-10
      • Issue 4, (1996) DOI: 10.11834/jrs.1996034
        摘要：On the basis of geological intertation of TM images, the relationships between fluorito deposits and structures, lithologies, volcanic. features and geochemistry in Wuyi area, Zhejiang Province, were analyzed The fluorite metalloged model was established. The method of feature oriented principal component analysis was ed to extract silicic and kaolinitic alteration information from the TM data, Which are important al alteration types for regional mineralization. Finally, the method of "Weights of evidence modeling" was ed to integrate information derived from remote sensing, geology and geochemistry, Which was then applied to map fluorite deposit potentials.  
        关键词：Fluorite deposits;Feature oriental principal component analysis;Weights of evidence modeling   
        157
        |
        230
        |
        11
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 10634206 false
        发布时间：2021-06-10
      • Zhang Bing
        Issue 4, (1996) DOI: 10.11834/jrs.1996032
        摘要：With the complicated terrain and low vegetation cover in loess plateau of North China, it is very difficult to get higher accuracy of digital image classification, only depending on the traditional spectral statistical classification method. The spatial resolution of Thematic Mapper（30m /pixel） also limit the accuracy and scale of interpreting landuse maps. In order to improve the accuracy of landuse classification in loess hilly area, a large scale relief map was used to create the digital geomorphic model （DGM）. By applying Fuzzy Mathematics theory, the DGM was used to correct the digital image classification result, so as to create the regional landuse model. The study shows that this classification improves the accuracy of landuse classification effectively, and combines the digital image classification with DTM entirely.  
        关键词：Loess hill;DTM;DGM;Fuzzy mathematics;Landuse   
        124
        |
        318
        |
        21
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 10634223 false
        发布时间：2021-06-10
      0