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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