Applications of GPS
z Providing Geodetic control.
z Survey control for
Photogrammetric control surveys and mapping.
z Finding out location of offshore
z Pipeline and Power line survey.
z Navigation of
civilian ships and planes. z Crustal movement studies.
z Geophysical positioning, mineral exploration and mining. z
Determination of a precise geoid using GPS data.
z Estimating gravity anomalies
z Offshore positioning: shiping, offshore platforms, fishing boats etc.
Astronomical observation of celestial bodies was
one of the standard methods of obtaining coordinates of a position. This method
is prone to visibility and weather condition and demands expert handling.
Attempts have been made by USA since early 1960's to use
space based artificial satellites. System TRANSIT was widely used for
establishing a network of control points over large regions. Establishment of
modern geocentric datum and its relation to local datum was successfully
achieved through TRANSI T. Rapid improvements in higher frequently transmission
and precise clock signals along with advanced stable satellite technology have
been instrumental for the development of global positioning system.
The NAVSTAR GPS (Navigation
System with Time and Ranging Global Positioning System) is a satellite based
radio navigation system providing precise three- dimensional position, course
and time information to suitably equipped user.