基于重复测线不符值的航空磁力矢量仪飞行试验数据精度评估  

Precision evaluation of flying experimentation data of the airborne vector geomagnetic measurement based on discrepancy of repeat lines

作　　者：刘晓刚 姬剑锋[1,2] 管斌 张丽萍[1,2] LIU Xiao-gang;JI Jian-feng;GUAN Bin;ZHANG Li-ping(State Key Laboratory of Geo-Information Engineering,Xi’an 710054,China;Xi’an Research Institute of Surveying and Mapping,Xi’an 710054,China)

机构地区：[1]地理信息工程国家重点实验室,西安710054 [2]西安测绘研究所,西安710054

出　　处：《地球物理学进展》2020年第2期433-437,共5页Progress in Geophysics

基　　金：国家重点研发计划(2018YFC1503806);国家自然科学基金(41774018)联合资助.

摘　　要：目前,航空磁力测量是快速获取陆地和近海区域高精度高分辨率地磁场信息的非常有效的技术手段.本文利用航空磁力矢量仪的15条野外飞行试验重复测线,完成了对航空磁力矢量仪的飞行测线数据的精度评估,结果表明,飞行测线上的地磁场总强度的测量精度,在200 m高度为3 nT,700 m高度为0.8 nT;三分量精度为4~9 nT.Airborne vector geomagnetic measurement is an effective technology to obtain the geomagnetic field information of land and offing area in high precision and resolution quickly. Based on 15 repeat lines of the airborne vector geomagnetic measurement, the precision evaluation of the flying lines is accomplished. The results show that the precision of total geomagnetic field strength on the flying lines in 200 m and 700 m flying height are 3 nT and 0.8 nT, respectively. The precision of three components of the geomagnetic field are between 4 nT and 9 nT.

关 键 词：航空磁力矢量测量 地磁场 重复测线 地磁总强度 

分 类 号：P228[天文地球—大地测量学与测量工程] P318[天文地球—测绘科学与技术]