https://elliot-blog.com/tags/gis/Recent content in GIS on 技术笔记Hugozh-CNSun, 18 Jan 2026 02:24:22 +0800https://elliot-blog.com/posts/202512/ecef_enu_wgs84/Sat, 06 Dec 2025 19:36:02 +0800https://elliot-blog.com/posts/202512/ecef_enu_wgs84/<h1 id="enuecefwgs84坐标系理解">ENU/ECEF/WGS84坐标系理解</h1> <h2 id="核心概念">核心概念</h2> <p><img class="lazyload" src="https://elliot-blog.com/svg/loading.min.svg" data-src="https://elliot-blog.com/posts/202512/ecef_enu_wgs84/assets/ecef.png" data-srcset="https://elliot-blog.com/posts/202512/ecef_enu_wgs84/assets/ecef.png, https://elliot-blog.com/posts/202512/ecef_enu_wgs84/assets/ecef.png 1.5x, https://elliot-blog.com/posts/202512/ecef_enu_wgs84/assets/ecef.png 2x" data-sizes="auto" alt="/posts/202512/ecef_enu_wgs84/assets/ecef.png" title="关系图" width="969" height="705" /></p> <h3 id="定义">定义</h3> <p>ecef的z轴指向北极,x轴是本初子午线和赤道的交汇处,由地心指向,y轴则是满足右手坐标系</p> <p>wgs84定义在椭球面上,LLA(对应x轴方向夹角经度lon,z方向夹角维度lat,和相对于椭球面高度alt)</p>