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基于MPI并行計算的衛星遙感數據變化監測系統設計
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吉林大學(xué) 地球探測科學(xué)與技術(shù)學(xué)院

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National natural science foundation of China (42171407 ,42077242)


Design of Satellite Remote Sensing Data Change Monitoring System Based on MPI Parallel Computing
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    摘要:

    為控制衛星遙感數據變化指征與非變化指征之間的實(shí)值誤差,實(shí)現對衛星遙感數據傳輸變化行為的準確監測,設計基于MPI并行計算的衛星遙感數據變化監測系統。建立A/D轉換電路與Zigbee網(wǎng)絡(luò )節點(diǎn)的匹配關(guān)系,將所得衛星遙感數據按需分配給傳感器模塊與協(xié)調器設備,完成數據采集與監測終端的硬件設計。按照并行拓撲結構連接形式,實(shí)施MPI的基本調用,再聯(lián)合數據進(jìn)程編寫(xiě)原則,實(shí)現對MPI并行計算的完善。根據傳感器幾何校正原理,求取遙感數據度量值,再分析核函數表達式,完成對衛星遙感數據的處理。利用MPI并行計算,控制數據采集與監測終端的硬件執行設備,完成衛星遙感數據變化監測系統設計。實(shí)驗結果表明,所設計系統的衛星遙感數據變化指征與非變化指征之間的實(shí)值誤差明顯縮小,能夠準確監測衛星遙感數據傳輸變化行為。

    Abstract:

    In order to control the real value error between the change indication and non change indication of satellite remote sensing data and realize the accurate monitoring of the change behavior of satellite remote sensing data transmission, a satellite remote sensing data change monitoring system based on MPI parallel computing is designed. Establish the matching relationship between A / D conversion circuit and ZigBee network nodes, distribute the satellite remote sensing data to sensor module and coordinator equipment as needed, and complete the hardware design of data acquisition and monitoring terminal. According to the connection form of parallel topology, the basic call of MPI is implemented, and then the principle of data process writing is combined to improve MPI parallel computing. According to the principle of sensor geometric correction, the measurement value of remote sensing data is obtained, and then the expression of kernel function is analyzed to complete the processing of satellite remote sensing data. Using MPI parallel computing to control the hardware execution equipment of data acquisition and monitoring terminal, the design of satellite remote sensing data change monitoring system is completed. The experimental results show that the real value error between the change indication and non change indication of satellite remote sensing data of the designed system is significantly reduced, and can accurately monitor the change behavior of satellite remote sensing data transmission.

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葉應輝.基于MPI并行計算的衛星遙感數據變化監測系統設計計算機測量與控制[J].,2022,30(11):32-37.

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歷史
  • 收稿日期:2022-05-09
  • 最后修改日期:2022-06-28
  • 錄用日期:2022-06-29
  • 在線(xiàn)發(fā)布日期: 2022-11-17
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