GPS多天线变形监测系统的数据采集与控制

作者：于捷杰，孙永荣，沈雪松 日期：2007-12-28/span> 浏览：4051 查看PDF文档

GPS多天线变形监测系统的数据采集与控制
于捷杰，孙永荣，沈雪松
（南京航空航天大学 导航研究中心，江苏 南京 210016）

摘 要：针对大型GPS变形监测项目成本高的问题，研究了GPS多天线技术，实现了一机对多点的监测。基于PC104硬件平台，在Visual C++ 6.0下开发了GPS多天线系统的数据采集与控制软件，实现了多天线微波开关的控制、与GPS接收机的通信以及GPS信息的RINEX标准格式转化。实验表明，该技术对GPS信噪比和测量精度几乎没有影响，而且大大降低了变形监测系统的成本，具有重要的经济价值和社会价值。
关键词：全球定位系统；多天线系统；变形监测；串口通信；并口控制；RINEX格式

Data acquisition and control of deformation monitoring system using multiantenna GPS
YU Jiejie, SUN Yongrong, SHEN Xuesong
(Navigation Research Center, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China)

Abstract: In order to solve high cost problem of deformation monitoring of large scale project with global positioning system (GPS), GPS multiantenna technology was proposed to facilitate multiobjects monitoring with one GPS receiver. Software of GPS multiantenna data acquisition and control system was developed in the proposed research with Visual C++ 6.0 programming language, the software was tested and operated in PC104 hardware to realize: (1) control of multiantenna microwave switch; (2) communication with GPS receiver; (3) standard conversion from GPS raw data to RINEX format. Based on the experiments of prototype system built, it is concluded that the system could minimize costs of deformation monitoring with less deterioration to signaltonoise and measure accuracy of GPS, therefore has great commercial and social value for future application.
Key words: global positioning system (GPS); multiantenna system; deformation monitoring; serial communication; parallel port control; RINEX format