摘要
基于数学和分析力学角度分别推导了航空矢量重力测量的数学模型,得到了一致的模型公式;给出了矢量模型的3个分量形式,其中垂直方向的分量就是标量重力测量的数学模型;简要介绍了我国研制成功的航空标量重力测量系统CHAGS的数据处理的过程,分析了标量重力测量中测线交叉点和重复测线的重力异常的精度;根据实测数据计算的结果表明:测线交叉点重力异常不符值的标准差约为5×10-5ms-2左右,重复测线的内符合精度优于5×10-5ms-2,达到了预期的要求。
In this paper, with the methods of mathematics and theoretical mechanics, two mathematical models of the airborne gravimetry were deduced and their results were the same. Three constituents of vector model were derived, and the vertical constituent was the mathematical model of airborne scalar gravimetry. Then, the data processing of the calculation of the airborne scalar gravimetry system CHAGS which was successfully developed in China is introduced and the accuracy of gravity abnormity of the crossing points of surveying line and repeat surveying line was analyzed. The results of the experiment data indicated that the standard error of gravity abnormity difference of the crossing points was about 5 × 10^-5ms^-2 and the repetitive accuracy of repeat surveying line was less than 5 × 10^-5 ms^-2, which reach the expectant demand.
出处
《测绘科学技术学报》
北大核心
2008年第1期68-71,共4页
Journal of Geomatics Science and Technology
基金
全国优秀博士学位论文作者专项基金资助项目(200344)
关键词
航空矢量重力测量
测线交叉点
重复测线
重力异常
airborne vector gravimetry
crossing points of surveying line
repeat surveying hne
gravity abnormity
