提高手持GPS面积测量精度的一种有效方法

An Effective Method to Improve the Area Measurement Precision of Pocket GPS

通过用手持GPS对长春市城区25块街区的测量面积与1∶500地形图上同名地块面积的比较,得出当地块面积大于10万m2时,手持GPS一次测量的面积精度为0.32%～0.56%,平均为0.51%;通过回归分析技术对手持GPS测量的面积进行改正,所测面积的平均精度可提高到0.3%。

By means of comparing the areas measured by pocket GPS with the ones in 1∶ 500 topographic map in 25 blocks,this paper gives the following conclusions：（1）When the measured area is bigger than 100 000 m2,the one time precision of area measured by pocket GPS is 0.32%~0.56%,the average precision is 0.51%;（2）Using the regression analysis technology to correct the area measured by pocket GPS,the average precision of measured area can be enhanced to 0.3%.