基于三角形面积的海空重力交叉点搜索法

Marine and airborne gravity intersection search method based on triangle area of survey line network

目前海空重力测量中测线网交叉点搜索的计算方法存在精度不高和操作复杂等缺点,可以通过改善交叉点搜索方法使得海空重力测量数据处理过程进一步优化。新提出一种基于三角形面积原理实现交叉点搜索的方法,并通过仿真数据和实测数据验证此方法的简洁性和有效性。计算结果表明,利用新提出的交叉点搜索法求解的测线网内符合精度要比主副测线斜率法提升0.02 mGal左右,计算速度要比行列式法快。本文的研究对于进一步优化海空重力测量中交叉点搜索方法具有一定的借鉴意义。

At present,the calculation method of line network intersection search in marine and airborne gravity survey has some shortcomings,such as low precision and complex operation,the data processing process of marine and airborne gravity survey can be further optimized by improving the method of intersection search.This paper proposes a new method of intersection search based on triangle area principle,the simplicity and effectiveness of this method are verified by simulation data and measured data.The results show that the coincidence accuracy of the new intersection search method is about 0.02 mGal higher than that of the primary and secondary slope method and the calculation speed is faster than that of the determinant method.The research in this paper can be used as a reference for further optimization of the intersection search method in marine and airborne gravity survey.