面向电磁态势的空间网格处理方法研究

Research on Spatial Grid Processing Method for Electromagnetic Situation

在联合作战的要求下,电磁态势面向的业务不再是传统的单兵种作战、单专业作战,其涉及的数据类型多、显示要求复杂,需要根据处理精度对作战区域进行统一编码。针对电磁态势的统一表征需求,研究了基于四叉树的空间网格索引生成方法,采用等圆柱投影将三维空间平面化,利用扫描线填充方法生成了地理空间网格,并建立四叉树管理多层空间网格索引数据。同时,提出了R-tree的空间网格关系映射方法,通过将异类数据预处理为大圆航线集合,采用R树对批量网格和折线相交计算进行优化。最后,在电磁态势应用实例中,该地理空间网格化方法得到了实践,索引搜索效率高、关联映射计算快速、有效,值得在类似应用中推广和使用。

Under the requirements of joint operations,the business of electromagnetic situation is no longer the traditional single-soldier operations and single-specialty operations,which involves many data types and complex display requirements,and the combat area needs to be unified coded according to the processing accuracy.Aiming at the need of unified representation of electromagnetic situation,this paper studies the generation method of Geospatial grid index based on quadtree.The three-dimensional space is flattened by equal cylindrical projection,and the geographic space grid is generated by scanning line filling method,and quadtree is established to manage the multi-layer spatial grid index data.At the same time,the R-tree spatial grid relational mapping method is proposed.The heterogeneous data is preprocessed to great circle route set,and R-tree is used to optimize the intersection calculation of batch grid and polyline.Finally,in the electromagnetic situation application example,the geospatial meshing method has been implemented,and the index search efficiency is high,as well as the association mapping calculation is fast and effective,so it is worth popularizing and using in similar applications.