Surface

The market for GPS technology is expected to reach $8.5 billion by the year 2000. Currently, GPS is used for applications that directly require position information. Surveying is most common. This currently includes accurate measurement of large parcels of land which are easily and inexpensively surveyed by traveling to several points that define the boundary of the parcel. Using a GPS solution by Ashtech, municipalities are beginning to map sewer systems and manhole covers to allow quicker logistic planning in servicing and installing underground systems. Additionally, a city worker in a car could instantly signal the main facility with precise location of a broken sign, malfunctioning signal light or pothole.

Search and rescue is another main application today. Almost all new craft, whether land, sea, or air have GPS built in. The Coast Guard now uses GPS to replace buoys after storms at a fraction of the former cost. Hikers have also found it to be a lifesaving tool in navigating back home in inclement weather. Commercial and sport fisherman now use it to identify and remember their favorite locations.

The mining industry has also begun utilizing GPS for exact location and 3-O mapping of ore deposits. Already, excavating machinery has been fitted with receivers to allow automatic targeting of mineral deposits. Similarly, some firms are using the technology to help with earth moving operations for building. GPS-enabled earthmovers can precisely determine the grade required for the site. Farmers are using the technology for similar reasons. Lastly, geological research can be augmented with accurate detection of continental plate movements.