Python code for GNSS station selection

The Python code describes a step-by-step approach for selecting a ground-based GNSS receiver station using the spatial indexing technique. A grid-based binning is applied to ensure stations are evenly distributed geographically with good spatial coverage.本Python代码详述了一种基于空间索引技术遴选地面全球导航卫星系统 (GNSS) 接收站的分步方法。本研究采用基于网格的分箱法 (grid-based binning)，以确保接收站在地理上均匀分布，并实现优质的空间覆盖。