海洋重力测量求取测网交叉点的新方法

根据《海洋重力测量规范》要求,海洋重力测线一般都要布设成纵横相交的网状,依据纵横测线的交叉点的符合程度来估算整个测区的测量精度。然而测量船在海上难免不受风流、浪等各种干扰因素的影响,测量航迹线一般不是规则直线,而是呈波动式变化。在海洋重力测量中,每条测线上的测点的数据是数以万计,如何快速的求解交叉点是十分必要的。本文尝试了一种新的求解交叉点的方法,可称为分段求解法,通过Matlab,C语言实践证明此方法既实用又方便。

New Method for Calculating Survey of Intersection in Marine Gravity Survey

According to 〈Specification for marine gravity survey〉, the marine gravity survey lines are always required to be laid into the vertical and horizontal intersecting mesh, according to the degree of compliance of the survey line crossing point to estimate the measurement accuracy of the entire survey area. Due to the influence of aircurrent, waves and so on ,the navigation line is generally not regular and straight, but fluctuant change. Marine gravity survey, measuring point data is tens of thousands in each measuring line, how to quickly solve the cross point is very necessary. We tried a new intersection search- ing method--sub--solving method. Through Matlab, C language practice proved that this method is prac- tical and convenient.