This is done by a pseudo-random code transmitted from the satellite to the GPS receiver. Where the subject is at is determined by the amount of time it took for the signal to reach the GPS relative to the exact location of the satellites. The more satellites that are involved in this process, the more accurate the measurements are. This will also greatly increase the price of the product. GIS Analysis Functions Spawning of Hurricanes Hurricane analysis is extremely important for the Eastern United States.
Early detection allows people to head for safety with an ample amount of time.
Unfortunately, tracking the direction and severity of hurricanes can be quite difficult and can economically hurt people if evacuation was initiated and there was no damage. An advanced model of a computerized hurricane must be created to predict what may happen. This can be achieved by taking data and putting it into a querry and eventually form a complex model. With the integration of remote sensing and GIS together, the user may look at the same areal photograph but at different layers with different information. Miscellaneous Future of GIS - text version The future of GIS appears promising.