| Tekijä: | Marek, S. |
| Otsikko: | Keeping Track of GPS |
| Lehti: | Satellite Communications
1992 : JULY, p.28-30 |
| Asiasana: | |
| Vapaa asiasana: | Location information, Applications, Drawbacks |
| Kieli: | eng |
| Tiivistelmä: | Global Positioning System (GPS) is based on satellite ranging-determining positions on the earth by measuring how far they are from satellites. With a GPS receiver, users receive signals from four or more satellites. Vehicle tracking is just one emerging application for GPS technology. Location and navigation information is essential to a broad range of activities, including boating, surveying, aviation and defence. But there are some drawbacks to the technology, GPS signals may lose in certain areas. |
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