创宝GPS测量仪试验报告

REPORT OF THE TEST TRIMBLE GPS SURVEYORS

1988年6月1日,中国科学院测量与地球物理研究所、国家地震局地震研究所和深圳华达电子有限公司三家联合,在武汉比长标准基线场对美国创宝公司的4000SX和4000SL两种型号的GPS测量仪进行了测试。缮果与已知边长相比,边长为1.5km的基线(3—9)相差4.8mm,边长为2.1km的基线(0—9)相差2.1mm 测试结果表明,对在两站同时用创宝4000系列GPS测量仪对四颗以上工作状态正常的GPS卫星观测一个小时以上所获得的数据进行后处理,用广播星历就可以得到优于(1mm+2ppm)的相对定位精度。这次试验进一步验证了FGCC报告对创宝GPS测量仪的测量精度的评价。

Trimble 4000SX and 4000SL GPS Surveyor were tested in wuhan standard baseline field in June 1,1988.The differences between the results obtained by Trimble GPS Surveyors and the known values for the baseline 3-9(1.5km)was 4.8mm, and for the baseline 0-9(2.1km)was 2.1mm.It is demonstrated that by using Trimble Surveyors, survey data sets obtained simultaneously an hour or more that includes observations of four or more healthy satellites and processed with the broadcast orbital data should meet data or exceed geometric accuracy of (1cm+2ppm). The result achieved by this test coincides with the evaluation of FGCC to Trimble 4000SX and 4000SL GPS Surveyors.