GPS在定位和面积量测中的误差分析.pdfVIP

　湖南农业科学（　湖南农业科学（HUNAN AGRICULTURAL SCIENCESHUNAN AGRICULTURAL SCIENCES ）） 2016 ，（10 ）：96-99 2016年10月　 　DOI:10.16498/j.cnki.hnnykx.2016.010.028  GPS在定位和面积量测中的误差分析   谢鹏芳，付　冉，黄家荣  （河南农业大学林学院，河南 郑州 450002 ） 摘　要：以河南农业大学校区为研究区域，通过手持 GPS 仪探讨了不同观测时长、不同观测时间以及不同区域面积对 GPS 精密度和稳定性的 影响。结果表明：不同观测时长对 GPS 定位的坐标没有影响；不同观测时段中，定位时长为 60 s 和 120 s 的稳定度相差不大，而实时定位的稳 定度比 120 s 的稳定度高 3 倍以上；当地块面积在 3 600 m2 以下时，GPS 测量结果的变化幅度较大，呈不稳定状态，当地块面积在 3 600 m2 以 上时，GPS 测量结果的变化幅度逐渐变小，呈现面积越大、误差越小、精度越高的趋势。 关键词：手持 GPS 仪；定位；面积量测；观测时长；稳定度；误差 中图分类号：P228.4 　　　　　　文献标识码：A　　　　　　文章编号：1006-060X （2016 ）010-0096-04 Error Analysis of GPS in Positioning and Area Measurement XIE Peng-fang ，FU Ran ，HUANG Jia-rong （ ） College of Forestry, Henan Agricultural University, Zhengzhou 450002, PRC Abstract：Taking the campus of Henan Agricultural University as the research area, the influence of different observation duration, different observation time and different areaon the GPS precision and stability was discussed through the handheld GPS instrument.The results showed that the coordinates of GPS positioning were not affected by the different observations duration; in different observation time interval, there was no big difference between 60 seconds and 120 seconds of positioning duration, but the stability of real-time positioning of 60 seconds was 3 times higher than that of 120 seconds; when the plot area was below 3600 m2, the change of GPS measurement result was larger, and it was not stable, when the plot area was more than 3 600 m2, the change range of GPS measurement results was gradually smaller, the larger the area, the smaller the error and the higher the accuracy. Key words： handheld GPS instru