According to the condition of china , this paper mainly studied the technology of field information acquisition and process based on gps , gis and virtual instrument . the main contents of this paper include : 1 ) based on the analysis of the principle of gps location and output - sentence format , the hardware interface and communication software were developed for oem gps receiver and computer to realize gps - data real - time acquisition by computer 本文结合我国的实际情况,重点研究了基于gps 、 gis及虚拟仪器的农田信息的采集与处理技术,主要研究内容如下: 1 )在分析gps卫星定位原理及输出语句数据格式的基础上,设计了oem型gps接收机与计算机的硬件接口及windows通讯程序,实现了gps数据的计算机实时采集。