| 低成本农用GPS接收系统的研制及在面积测量中的应用 |
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| 引用本文： | 曹旻罡,梁静娴,张漫.低成本农用GPS接收系统的研制及在面积测量中的应用[J].中国农业大学学报,2009,14(5). |
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| 作者姓名： | 曹旻罡 梁静娴 张漫 |
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| 作者单位： | 中国农业大学,现代精细农业系统集成研究教育部重点实验室,北京,100083 |
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| 基金项目： | 国家“863”计划(2006AA10A304); 北京市科技新星支持计划(2007A098) |
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| 摘 要： | 针对目前我国应用于精细农业的GPS接收系统成本高,不能接收虚拟参考站(VRS)差分信息的问题,采用低成本亚米级精度GPS接收模块,并结合ARM7微处理器、基于GPRS(general packet radio service)方式的无线通信模块、U盘存储模块、键盘和LCD设计研制了低成本GPS接收系统。该GPS接收系统可以通过GPRS方式接收北京VRS控制中心发送的差分改正信息,实现实时差分定位及长时间稳定的通信链路。定位信息通过串口输出(输出频率为1 Hz)和U盘存储2种方式实现数据的输出和保存,用户可利用本接收机进行定位和面积测量。面积测量实验结果表明,该接收机在不同大小、不同形状的面积测量中,其相对测量误差小于3%,满足精细农业中面积测量的要求。
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| 关 键 词： | GPS 虚拟参考站(ves) 面积测量 精细农业 |
Development of an agricultural low-cost GPS receiver and its application in area survey |
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| CAO Min-gang,LIANG Jing-xian,ZHANG Man.Development of an agricultural low-cost GPS receiver and its application in area survey[J].Journal of China Agricultural University,2009,14(5). |
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| Authors: | CAO Min-gang LIANG Jing-xian ZHANG Man |
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| Institution: | CAO Min-gang,LIANG Jing-xian,ZHANG Man(Key Laboratory of Modern Precision Agriculture System Integration Research,Ministry of Education,China Agricultural University,Beijing 100083,China) |
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| Abstract: | An agricultural low-cost GPS receiver was designed to meet the requirement of area survey in cropland.The GPS receiver consists of low-cost GPS-OEM module,ARM7 microcontroller,wireless module,keypad and LCD.It is compatible to SBAS and is capable of receiving differential correction data from VRS center via GPRS wireless module in order to acquire sub-meter level accuracy.The receiver can maintain a reliable connection to Beijing VRS center and output positioning data via serial port once a second and store... |
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| Keywords: | GPS VRS(virtual reference station) area survey precision agriculture |
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