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The Global Positioning System A Shared National Asset (1995) / Chapter Skim
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Pages 38-40

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From page 38...
... Recently, however, this trend is beginning to change due to an increased focus on initiatives such as the Intelligent Transportation System (ITS) , which adapt defense-related technologies for uses in the civilian comanunity.28 More specifically, land transportation applications of GPS are growing rapidly, triggered by ever cheaper and more sophisticated equipment, an accelerated maturation of technology, widely available differential augmentations, and competition for economic and environmental responsiveness.
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From page 39...
... Also known as prescription farming, or site-specific crop management, precision farming gives the farmer the ability to apply precise amounts of fertilizer and pesticide to exact field locations based on the type of crop planted and the soil composition, potentially improving both the efficiency and cost-effectiveness of these operations. The positioning and navigation accuracy required for precision farming, as shown in Table 2-6, can only be met with local-area DGPS.
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From page 40...
... Integrity (1 minus PHE times PMD) and continuity of service requirements are not defined for land transportation applications.
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Key Terms

  • land transportation
  • gps applications
  • service requirements
  • transportation applications
  • precision farming

  • gps receiver
  • gps services
  • technical report
  • augmented gps
  • national approach


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