Locational Accuracy

Angels of locational accuracy

Satellite navigation system consist of satellites that provide spatial positioning and enables hand held devices to determine accurate position using time signal

Current global satellite navigation systems

    Global positioning system (GPS) :

    the most utilised system .consist of up to 32 medium orbit satellites. Operational            since 1978 and globally available since 1994

    GLONASS (Global navigation satellite system ) :

   consists of 24 satellite ,operated by Russian aerospace defence forces

   DORIS ( Doppler orbitography and radio positioning integrated by satellite )

   French precision navigation system based on static emitting station around the world.    Limited in uses and coverage. used with other global navigation satellite system           (GNSS)

Navigation system under development

          Galileo

           To be managed and operated by the European union (EU) and European space              agency (ESA)

         BeiDou

          Managed by china .currently functional in Asia pacific as a  16 satellite system

India and its satellite navigation plan

             India has a two pronged satellite navigation Sat Nav plan

           GAGAN

           GPS aided geo augmented navigation

           IRNSS

            Its full form is  Indian regional navigation satellite system

            It is a 7 satellite navigation system.   In this Indian space agency ISRO have already established 4 satellite in orbit ,and by march 2016 all satellite will be in orbit and by mid . 2016.

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