【摘要】 在地震采集设计时,观测系统优选论证是最基础也是最重要的一步。通常会根据不同的炮检点布设方案求取炮检点或者不同覆盖次数面元格点分布的限定多边形边界,然后求取其面积或者其内部点分布密度等参数,更多的是利用这些边界以各种底图为背景进行投影成图。如果是复杂的边界形状且没有一种反求边界的方法,则只能逐个读取点的坐标,然后手工输入坐标序列,计算、成图等操作,这个过程费时又费力。这里讨论在给定不同点集的情况下,利用矩形网格数据格点等值追踪法,求取并自动有序排列边界多边形控制点坐标,直接转换输出地震采集设计软件可用的障碍物数据格式,方便设计过程中的使用。研究证明,这种区域边界的求取方法能够满足大部分理论设计的需要,减少手工勾勒及人工读取边界坐标值的繁琐过程,实现坐标求取和应用一步到位,大大提高了边界坐标求取的准确度及采集方案设计工作的效率。更多还原

【Abstract】 Observing system preferred demonstration is the most basic and important step in seismic acquisition design process.Designers usually obtained the polygon of boundary depending on the distribution of shots and receivers points or bin grid nodes with different fold number,and then calculate its area or internal point density and so on.It is more useful to map these boundary and projection them onto a variety of background image.You can only read point coordinates one by one and manually enter the coordinates sequence,which is time-consuming and laborious,for subsequent calculations,mapping and other operations when boundary shape is complex and there is no way to obtain the boundary coordinates.This article discusses how to calculate and automatically sort the point coordinates of boundary polygon in different case of a given set of points by equivalent tracing of rectangular grid data node,and then how to directly output available obstacle data format for the seismic acquisition design software to facilitate the design process.It is practical proved that method for calculating the boundary of point set can meet the needs of most of the theoretical design.The labour of hand outlining boundary and one by one reading boundary coordinate values is significantly reduced.Calculating and applications of boundary coordinates can be finished at the same time.It is greatly improved the accuracy of calculating the boundary coordinates and efficiency of acquisition program design.更多还原