一种航空重力测线交叉点搜索新方法

针对目前航空重力测量数据处理中常规搜索方法存在搜索速度慢、正确率低、适用性差的不足，提出以主测线点为搜索中心，采用一定宽度的搜索框对主副测线点进行搜索，将搜索到的主副测线上相邻测点组成线段，运用行列式方法精确求出交叉点及不符值的方法，即滑动窗口搜索法。从搜索时间和正确率两方面对滑动窗口搜索法进行分析，结果表明本文所提方法简单有效，能明显提高测线交叉点搜索效率。

A New Method for Searching Intersection of Airborne Gravity Survey

Considering shortcomings of conventional search methods in airborne gravity measurement data processing, such as slow search speed, low correct rate and poor applicability, a new method, the ‘sliding window search method’ is proposed. The main line point is regarded as the search center and the main and sub line points are searched in a certain width of search box. The adjacent measuring points detected in the main and auxiliary lines form a line segment, and the intersection and discrepancy are determined. Through practical examples, the sliding window search method is discussed and analyzed from the aspects of search time and accuracy. The results show that the proposed method is simple and efficient, the searching efficiency of cross-point is improved and the workload is reduced significantly.