摘要
对《2 0 0 0国家重力基本网》工程短基线进行了复测。经资料处理 ,庐山基线各测站相对重力值精度的平均值为± 0 .0 30 μm·s-2 ,各测段重力差精度的平均值优于± 0 .0 4 2 μm·s-2 ;灵山基线分别为± 0 .0 32 μm·s-2 和± 0 .0 4 5 μm·s-2 ;两条基线最大重力差分别比原来减少 0 .0 8μm·s-2 和增加 0 .0 3μm·s-2 ;新引进的两台重力仪分别在长基线和短基线上标定的一次项系数K1没有显著差异。采用三角多项式模拟LCR -G115 0重力仪的周期误差 ,在短基线上进行了成功的标定 ,并取得显著的改正效果。
In the same time when the project of 2000 national gravity network was performed the gravimetry on short Calibration Lines was carried out. The processed data shows that the average value of accuracy of relative gravity value at each station of the Lushan Mountain Calibration Line is ±0.032 μm·s\+\{-2\}. The average value of accuracy of the gravity difference between its every adjacent stations is better than ±0.042 μm·s\+\{-2\}. For the Lingshan Mountains they are ±0.032 μm·s\+\{-2\} and ±0.045 μm·s\+\{-2\} respectively. Compared with original value, the maximum gravity differences of the two calibration lines decrease by 0. 08 μm·s\+\{-2\} and increase by\{ 0.03 μm·s\+\{-2\}\} respectively. The newly introduced gravimeters are calibrated at long and short calibration lines respectively and there is no obvious difference between the first order terms of coeffient \%K\%\-1 calibrated on the different calibration lines. The periodic error of LCR-G1150 gravimeter simulated by trigonometric polynomial is successfully calibrated at short calibration lines and its application effect is obvious.
出处
《大地测量与地球动力学》
CSCD
2002年第4期61-65,共5页
Journal of Geodesy and Geodynamics
基金
国家野外重点试验站 -武汉重力与固体潮观测研究站和中国地震局局管共用设备基金联合资助
关键词
重力基本网
周期误差
重力仪
标定
数据处理
gravity base network,short calibration line,periodic error,gravimeter calibration
