V2EX gga

GGA

释义 Definition

GGA 通常指 NMEA 0183 全球导航卫星系统(GNSS/GPS)数据中的一种语句类型(如 $GPGGA),全称常解释为 Global Positioning System Fix Data,用于输出定位“定解(fix)”相关信息,例如时间、经纬度、定位质量、可见卫星数、HDOP、海拔等。(在不同资料中也可能被当作缩写/首字母词用于其他含义,但在导航与测绘领域以上用法最常见。)

发音 Pronunciation (IPA)

/di di e/

例句 Examples

The receiver outputs a GGA sentence every second.
接收机会每秒输出一条 GGA 语句。

To improve accuracy, we logged GGA data along with RTK corrections and compared the altitude results.
为提高精度,我们在记录 GGA 数据的同时使用 RTK 改正数,并对比了海拔结果。

词源 Etymology

GGA 属于技术领域的字母缩写/语句标识,来源于 NMEA 0183 协议对不同数据语句的命名体系;其中 GGA 被用作“定位定解数据(fix data)”类语句的标识(常见形式为 $GPGGA**,也可能出现 **$GNGGA 等,取决于“talker ID/发话者标识”)。

相关词 Related Words

文学与作品 Literary / Notable Works

  • NMEA 0183 Standard(NMEA 官方协议规范文档中列出并定义 GGA 语句)
  • GPS for Land Surveyors(测绘类教材/参考书中常以 GGA 作为原始观测与定位输出示例)
  • Understanding GPS/GNSS: Principles and Applications(GNSS 原理与应用类书籍中常出现 GGA 等 NMEA 语句讲解)
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