USNG_1K

This layer represents a 1,000 by 1,000 meter United States National Grid (USNG) for Florida. The USNG is an alpha-numeric reference system based on the UTM coordinate system and is similar to the Military Grid Reference System. Use of the USNG ensures a uniform grid mapping and positional reporting system for search and rescue, emergency planning, response, and recovery.该图层为佛罗里达州1000×1000米尺度的美国国家网格（United States National Grid，USNG）。美国国家网格是基于通用横轴墨卡托（Universal Transverse Mercator，UTM）坐标系构建的字母数字参考系统，其设计与军事格网参考系（Military Grid Reference System）相似。采用美国国家网格可保障统一的格网制图与位置报告体系，适用于搜救、应急规划、应急响应及灾后恢复等工作场景。