自动化磁通门经纬仪测量误差仿真  

Measurement error simulation of automated fluxgate theodolite

作　　者：张策 滕云田[1] 张涛[1,3] 范晓勇[1] 张小涛[4] ZHANG Ce;TENG Yun-tian;ZHANG Tao;FAN Xiao-yong;ZHANG Xiao-tao(Institute of Geophysics,CEA,Beijing 100081,China;Institute of Crustal Dynamics,CEA,Beijing 100085,China;National Earthquake Response Support Service,Beijing 100049,China;Handan Center Station,Hebei Earthquake Administration,Hebei Handan 056001,China)

机构地区：[1]中国地震局地球物理研究所,北京100081 [2]中国地震局地壳应力研究所,北京100085 [3]中国地震应急搜救中心,北京100049 [4]河北省地震局邯郸中心台,河北邯郸056001

出　　处：《地球物理学进展》2019年第5期1802-1810,共9页Progress in Geophysics

基　　金：国家重大科学仪器设备开发专项(2014YQ100817-2);国家自然科学基金项目(41404141)共同资助

摘　　要：目前绝对地磁观测中磁偏角(D)和磁倾角(I)的观测仍然依靠人工,为了实现绝对地磁观测的全面自动化,本文针对研制中的自动化磁通门经纬仪进行了测量误差仿真分析.文中利用多体系统理论对自动化磁通门经纬仪的传感器输出直接进行建模,基于磁通门经纬仪的测量特点,使用计算机仿真直观展示了仪器装配和运行过程中的各类误差对测量误差的影响.从仿真结果可以看出,测量磁偏角D时,竖轴晃动误差影响最大,磁轴不正交误差和横轴晃动误差影响次之,横轴倾斜误差没有影响;测量磁倾角I时,磁轴不正交误差影响最大,竖轴晃动误差和横轴晃动误差影响次之,横轴倾斜误差影响最小.At present, the observations of magnetic declination and magnetic inclination in absolute geomagnetic observation still rely on artificial. In order to realize the complete automation of absolute geomagnetic observation, the error simulation analysis of the developed automatic fluxgate theodolite is carried out in this paper. In this article, the multi-body system theory is used to model the sensor output of the automated fluxgate theodolite directly. Based on the measurement characteristics of the fluxgate theodolite, the article uses computer simulation to visually demonstrate the impact of various errors in the assembly and operation of the two-dimensional turntable on the measurement error of the instrument. From the simulation results, it can be seen that when measuring the magnetic declination D, the influence of the vertical axis shake error is the largest, the magnetic axis non-orthogonal error and the horizontal axis shake error have the second influence, and the horizontal axis tilt error has no effect. When the magnetic inclination I is measured, magnetic axis non-orthogonal error has the greatest impact, vertical axis shaking error and horizontal axis shaking error have the second largest influence, and horizontal axis shake error has the smallest influence.

关 键 词：自动化 磁通门经纬仪 DI仪 误差建模 误差仿真 

分 类 号：P318[天文地球—固体地球物理学]