民用手持GPS仪测量精度分析——基于某矿区GPS与RTK同点测量数据对比

Statistical Analysis of Measuring Accuracy of Civil Handheld GPS Instrument——Comparison of GPS and RTK Measurement Data at the Same Point in a Mining Area

通过对比分析浙西北某矿区详查工作中同时采用民用手持GPS仪和RTK进行测量的钻孔孔口坐标数据,发现使用该类型仪器定位时平面精度在2m以内的概率为32.14%,在5m以内的概率为78.57%,在10m以内的概率为92.86%。确定该民用手持GPS仪可以运用于1∶5000比例尺及更小比例尺地质填图时,普通地质点野外地理坐标平面参数的采集工作。

Through comparative analysis of the hole coordinate data of a mining area in northwest Zhejiang Province,which were measured by both the civil handheld GPS instrument and RTK,it was found that when using this type of instrument,the probability of plane accuracy within 2 m is 32.14%,78.57% within 5 m,and 92.86% within 10 m.It is confirmed that the civil handheld GPS instrument can be used to collect the field geographic coordinate plane parameters of common geological points in the geological mapping of 1:5 000 scale and smaller scale.