15 July 1996, Volume 11 Issue 2

    

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  Analysis of Spectral Characteristics of Sedimentary Rocks in Keping,Xinjiang

  Remote Sensing Technology and Application. 1996, 11(2): 1-8. https://doi.org/10.11873/j.issn.1004-0323.1996.2.1

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  In accordance with the sedimentary rocks in Keping,Xinjiang,the spectral measurement method was discussed.The spectral characteristics was analyzed.The influence on spectral characteristics of sedimentary rocks from minerals components,surface structure,rock colour,rock weatheding and environments was analyzed.
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  Observations of Coastal Ocean Phenomena with Spaceborne SAR

  Remote Sensing Technology and Application. 1996, 11(2): 9-14. https://doi.org/10.11873/j.issn.1004-0323.1996.2.9

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  Radar images from the synthetic aperture radars(SAR)aboard the first European remote sensing satellite ERS 1,the first Japanese remote sensing satellite JERS 1 and American space shuttle(SIR C)have been used to observe oceanic phenomena off the coast of China.The SAR images have revealed features associated with surface waves,internal waves,surface flow patterns and river plumes,detected oil slicks and ships,and mapped underwater bottom topography.The SAR imaging mechanisms of these phenomena are also discussed in the paper.
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  Design of A Spaceborne Radar Altimeter

  Remote Sensing Technology and Application. 1996, 11(2): 15-19. https://doi.org/10.11873/j.issn.1004-0323.1996.2.15

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  Spaceborne radar altimeter is able to measure the distance between satellite and mean sea level,the significant wave height,the backscatter coefficient and other oceanography parameters in all weather and all day.It is a very important spaceborne microwave sensor.This paper puts forward a preliminary state amplifier and “full deramp” technique.Its objective is ±10 cm in height measuring.An adaptive tracker built around a microprocessor will perform height tracking function.Because of its high pulse compression rate,low mass and low peak life,the altimeter can easily be spaceborne on various platform.
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  A Study on the Mathematical Model of Remote Sensing Estimating Yield for Lowland Meadow in the Western Part of Northeast Plain

  Remote Sensing Technology and Application. 1996, 11(2): 20-25. https://doi.org/10.11873/j.issn.1004-0323.1996.2.20

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  On the basis of field observation and processing the information from NOAA/AVHRR CCT,the model of remote sensing estimating yield for lowland meadow in the western part of Northeast Plain is established by means of statistical methods in this research.Results show that the way of establishing the model with the green vegetation index (GVI) caculated from CCT is more convenient and reasonable than the one with the GVI corrected by the GVI measured in the field.
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  The Study of Flood′s Dynamic Surveying Using NOAA/AVHRR Data

  Remote Sensing Technology and Application. 1996, 11(2): 26-31. https://doi.org/10.11873/j.issn.1004-0323.1996.2.26

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  In this paper,the spectral features of flood,vegetation and soil has been analysed by NOAA satellite data and the analytic thinking of sticking out water body and vegetation in the same time has been put forward.Owing to requirement of objective analysis,a image processing software system has been established,including a series of pretreatments such as projecting,cuting,enlarging and matching on the image data of NOAA/AVHRR and the analytic methods of fuzzy unsupervised classification,specific value and normalized vegetation indexes to determine the flood regions,calculate its area,device its degreed and provide its distributional picture.All these are scientific basis for flood prevention department.

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  Application of Airborne Remote Sensing Technical System in Natural Disaster Reduction

  Remote Sensing Technology and Application. 1996, 11(2): 32-39. https://doi.org/10.11873/j.issn.1004-0323.1996.2.32

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  Some applications of ARSTS in monitoring earthquake,flood and forest fire to reduce damage ultimately were introduced in this paper.Airborne remote sensing technical system(ARSTS) possesses flexible and fast response ability.It plays an important part in real time and dynamically monitoring natural disasters.Based on the different kinds of disasters,such as earthquake,flood and forest fire,we can select the valid remote sensors to monitor them and fastly obtain images of disaster,by using airplane ground image transmitting and receiving system. Based on the ground moible fast image processing system can be determined and analysed the damaged condition and its distribution so as to provide local government to take rescuing measure effectively by applying computer image fast looking,prepocessing,interpreting and analysing techniques,and also long range communicating system to transmit analysed result image to Beijing disaster command post,to form a specialized airborne remote sensing technical system for monitoring disaster.
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  A New Method for Calibrating the Triple channel Ground based Microwave Radiometer

  Remote Sensing Technology and Application. 1996, 11(2): 40-44. https://doi.org/10.11873/j.issn.1004-0323.1996.2.40

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  On the basis of the correlation of the three channel brightness temperatures TB at 20.6 ,31.65, and 90GHz, a new calibration method is proposed with which the calibration coefficients and sky TB can simultaneously be obtained by solving a nonlinear equation system. The feasibility of this method has been demonstrated by a numerical simulation.
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  Integrated System for Rice Production Estimation

  Remote Sensing Technology and Application. 1996, 11(2): 45-53. https://doi.org/10.11873/j.issn.1004-0323.1996.2.45

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  Presented in this paper is the integrated system for rice production estimation.The system mainly consists of three parts:(1)data base of the system,including statistical data,tables and images such as natural environmental data,social economic data and TM,NOAA images.(2)System running process.This part of work was mainly conducted with ERDAS image process system and ARC/INFO software as well as some programs developed by the authors.Some key items ,ie,rice area extraction,NOAA image processing,rice growth monitoring and yield estimation,were selected to illustrate the running process of the system.(3)System maintenance,introducing the future work of building a integrated system for rice production estimation.
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  The Research of Computer aided Cartographic Using Classified Image of Remote Sensing

  Remote Sensing Technology and Application. 1996, 11(2): 54-59. https://doi.org/10.11873/j.issn.1004-0323.1996.2.54

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  The realization of automatic mapping of remote sensed information is an important technical means which speed up the remote sensing application.The essay that depended on the character of TM classified image and the principles of thematic mapping has presended the porcedure as well as the method of computer aided cartographic on how to generalize image by means of the layer division filter and combine GIS.This is an instructive research which will improve the technical level of thematic analysis,provide quick and timely data and accelerate the combination of remote sensing with GIS.
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  The Features and Development Trends of Marine Remote Sensing

  Remote Sensing Technology and Application. 1996, 11(2): 65-69. https://doi.org/10.11873/j.issn.1004-0323.1996.2.65

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  The paper explains the concept,features of marine remote sensing,and shows its measure contents,application fields and development aboard and at home.On the basis of studing current development,the authors analyze the development trends of marine remote sensing,and set forth the guiding countermeasures.