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华迅第5 代GNSS 软件数据接口通讯协议
Revision 1.0
目 录
1 概述········································································································3
2 缩略语·····································································································3
3 扩展的NMEA 消息·····················································································4
3.1 数据内容··································································································4
3.1.1地址段··········································································································4
3.1.2数据字段·······································································································4
3.1.3和校验字段····································································································5
3.2 NMEA 消息格式························································································7
3.3 华迅扩展的NMEA 消息类型定义··································································8
3.3.1GGA - Global Positioning System Fix Data ························································8
3.3.2GLL - Geographic Position – Latitude/Longitude ··············································9
3.3.3GSA - DOP and Active Satellites ···································································10
3.3.4GSV - Satellites in view ·················································································10
3.3.5 RMC - Recommended Minimum Specific GNSS Data ·····································11
3.3.6VTG
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