线性插值的海洋磁力测量测线布设评价方法

Evaluating Method of the Survey Line Layout Based on the Linear Interpolation in Marine Magnetic Survey

测线布设是海洋磁力测量海区技术设计的核心内容,在保证整个测区的测量成果精度和测量效率方面起着决定性作用。目前测线间距确定依据测图比例尺而定,没有充分顾及测区地磁场特性。本文结合海洋磁力测量的特点,基于测线间磁异常的线性插值,尝试利用相邻测线插值精度来评价测线布设合理性。进一步以实测磁异常图为基础,进行仿真测量比对。结果表明,利用相邻测线间磁异常的插值精度,可以有效分析测线布设方式对磁测的影响,进而评价测线布设的合理性,为海洋磁力测量测线布设的优化提供量化指标。

The survey line layout is the primary content of the technique design in marine magnetic survey,which has decisive effect on the assurance of the survey precision and efficiency.At present,the line spacing of each survey order is decided by the corresponding survey scale,the characteristics of the magnetic anomaly has not been fully considered.Based on the linear interpolation,the evaluating of the survey line layout with the interpolation precision between the adjacent lines has been put forward.The actual magnetic map has been adopted to simulate and analyze.The results show that the interpolation precision can be applied to analyze the influence of the survey line layout to the survey,and also can be used to evaluate the rationality of the survey line layout,which can provide the quantitative index for the optimizing of the survey line layout.