Research Article
Monitoring Dangerous Goods in Container Yard Using the Internet of Things
Table 3
Field meaning of GPGGA message.
| GGA | Global Positioning System Fix Data | 123519 | Fix taken at 12:35:19 UTC | 4807.038,N | Latitude 48 deg. 07.038′ N | 01131.000,E | Longitude 11 deg. 31.000′ E | 1 | Fix quality: 0 = invalid; 1 = GPS fix (SPS); 2 = DGPS fix; 3 = PPS fix; 4 = real-time kinematic; 5 = float RTK; 6 = estimated (dead reckoning); 7 = manual input mode; 8 = simulation mode | 08 | Number of satellites being tracked | 0.9 | Horizontal dilution of position | 545.4,M | Altitude, meters, above mean sea level | 46.9,M | Height of geoid (mean sea level) above WGS84 ellipsoid | (empty field) | Time in seconds since the last DGPS update | (empty field) | DGPS station ID number | 47 | Checksum data, always beginning with |
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