基于GPRS的野外高光谱对地辐射仪通信系统设计
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摘要
为了解决野外高光谱对地辐射仪在偏远地区长序列数据传输及实时测控问题,设计一种基于GPRS的远程数据通信系统。该系统通过主控电路板和GPRS DTU终端实现数据远程传输,采用远程中心的上位机软件进行数据接收和处理。针对野外信号不佳以及GPRS通信丢包的情况,设计了基于NAND FLASH的数据备份和重传功能。目前,该通信系统已经成功运用于野外高光谱对地辐射仪,在合肥地区测试了系统的重复性以及稳定性,通信丢包率不超过2.7%。野外高光谱对地辐射仪在敦煌辐射校正场开展了现场测试,远程通信系统工作正常,验证了系统设计的可行性。
A remote data communication system based on general packet radio service(GPRS) is designed to solve the problems of the long sequence data transmission,and real-time measurement and control of the field hyperspectral earth radiometer working at remote areas. The remote data transmission of the system is realized by means of main control circuit board and GPRS DTU(data transfer unit)terminal,and the upper computer software of remote center is used to receive and process the data. The data backup and retransmission functions based on NAND FLASH chip are designed to solve the conditions of poor field signal and GPRS communication packet loss. The communication system has been successfully applied to the field hyperspectral earth radiometer,and its repeatability and stability were tested in Hefei,whose communication packet loss rate is less than 2.7%. The site test was carried out for the field hyperspectral earth radiometer at Dunhuang radiometric calibration field. The remote communication system worked normally during the test,and the feasibility of the system design was verified.
A remote data communication system based on general packet radio service(GPRS) is designed to solve the problems of the long sequence data transmission,and real-time measurement and control of the field hyperspectral earth radiometer working at remote areas. The remote data transmission of the system is realized by means of main control circuit board and GPRS DTU(data transfer unit)terminal,and the upper computer software of remote center is used to receive and process the data. The data backup and retransmission functions based on NAND FLASH chip are designed to solve the conditions of poor field signal and GPRS communication packet loss. The communication system has been successfully applied to the field hyperspectral earth radiometer,and its repeatability and stability were tested in Hefei,whose communication packet loss rate is less than 2.7%. The site test was carried out for the field hyperspectral earth radiometer at Dunhuang radiometric calibration field. The remote communication system worked normally during the test,and the feasibility of the system design was verified.
引文
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[6]蒋磊,于雷,王振翀,等.基于WiFi和ZigBee的井下人员无线跟踪与定位系统设计[J].工矿自动化,2011(7):1-6.JIANG Lei,YU Lei,WANG Zhenchong,et al. Design of wireless tracking and location system based on WiFi and ZigBee[J]. Industry and mine automation,2011(7):1-6.
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[10]陆林燕,王鲁静,郑正奇.NAND FLASH编程实现研究分析[J].计算机技术与发展,2008,18(3):118-120.LU Linyan,WANG Lujing,ZHENG Zhengqi. Research and analysis on programming implementation of NAND FLASH[J]. Computer technology and development,2008,18(3):118-120.