摘要
简要介绍了航空重力测量中基准站的布设原则,结合2010年某地区的实际测量数据分析了基准站与测线的距离对航空重力测量的精度的影响。实际数据验证表明,基准站距离测线360 km时,其交叉点重力异常不符值标准差可以达到±2.0816 mGal,其精度符合规范要求,所以在GPS基准站布设困难的地区,可以依据测区的具体情况适当地放宽GPS的布设位置和距离。
This paper gives a brief introduction of the reference station setup principle. And together with the actual observed data it analyzes the influence caused by the distance between reference station and line to the accuracy of airborne gravity survey. The result shows that when the distance is 360 km, the standard derivations of the crossing point discrepancy gravity anomaly is ＋2.0816 reGal, which is up to standard. So at the area, it is hard to setup GPS reference station, and it is necessary to loosen the distance principle to setup GPS station.
出处
《测绘地理信息》
2014年第1期40-42,共3页
Journal of Geomatics
关键词
航空重力测量
基准站
重力异常不符值中图法
airborne gravity survey
reference station
discrepancy gravity anomaly
