摘要
为提高罗盘校正场磁偏角和真方位角的测量精度,文中提出采用GNSS测量技术和经典方格网磁偏角测量技术相结合的方法,利用GNSS精密星历参与平差,同时采用测站基线向量直接解算真方位角的方法,可提高控制点基线的相对中误差和真方位角值的精度,避免多项误差累积。采用方格网磁偏角测量方法,可有效检核磁偏角测量中观测异常值,提高磁偏角测量的可靠性,实际建立的罗盘校正场磁偏角测量精度达到1′48″。文中方法对各类罗盘校正场的规范化建设具有积极的参考价值。
In order to improve the measurement accuracy of compass correction field magnetic declination angle and true azimuth angle,this paper proposes the method of combining GNSS measurement technology with classical grid magnetic declination angle measurement technology,by using GNSS precise ephemeris to participate in adjustment,and using station baseline vector to directly calculate true azimuth angle,which can improve the accuracy of relative mean square error and true azimuth angle of control point baseline,and avoid multiple error accumulation.The grid magnetic declination measurement method can effectively check the abnormal values observed in the magnetic declination measurement,and improve the reliability of the magnetic declination measurement.The actually established compass correction field magnetic declination angle measurement reaches the accuracy index of 1′48″.This paper has a positive reference value for the standardization construction of various compass calibration fields.
作者
陈铭达
车德福
CHEN Mingda;CHE Defu(College of Resources and Civil Engineering, Northeastern University, Shenyang 110819, China)
出处
《测绘工程》
CSCD
2021年第6期65-68,74,共5页
Engineering of Surveying and Mapping
基金
国家自然科学基金资助项目(41871310)
中央高校基本科研业务专项资金资助项目(N17241004)。
关键词
罗盘校正场
磁偏角
真方位角
GNSS
IGS基准站
compass correction field
magnetic declination
true azimuth
GNSS
IGS reference station
作者简介
第一作者:陈铭达(1995-),男,硕士研究生;通信作者:车德福(1970-),男,教授,博士.
