摘要
基于GPS技术、电子技术和先进传感器技术的谷物联合收割机智能测产系统及产量图分布生成技术是精细农业研究的关键技术之一。为此,介绍了谷物测产系统基本组成和谷物产量计算基本数学模型,初步探讨了基于GPS技术的实时测量谷物联合收割机前进速度的原理和方法,分析和研究了利用GPS伪距定位方程求导测速的数学模型,利用Trimble AgGPS132进行了单点测速和差分测速试验,并进行了平均速度测量值精度比较分析。由结果可知,差分测速精度误差小于0.7%,能满足谷物联合收割机测产系统速度测量精度要求。
It is one of key technology in precision agriculture for the grain yield monitor system and the yield mapping based GPS technology, electro technology and advanced sensing technology. The paper introduces the basic composing of the yield monitor system and the yield model. The principle and method are studied about combine velocity determination based GPS false distance differential equation and its application in grain yield monitor system. The grain yield model is analyzed and established. With the Ag132GPS equipment the single and difference measurement velocity experiment have being gotten on, the average velocity results were been compared for the different methods, and the error of DGPS measurement velocity could be less than 0.7 % and satisfy the precision requirement for grain yield monitor system.
出处
《农机化研究》
北大核心
2009年第12期155-157,共3页
Journal of Agricultural Mechanization Research
关键词
精细农业
GPS
测速
测产
precision agriculture
GPS
velocity determination
yield monitor
