In­dia's own GPS on track

Down to Earth - - THE FORTNIGHT - I N D I A S U C C E S S F U L LY

launched its fourth nav­i­ga­tion satel­lite, IRNSS-1D, from Sri­harikota in Andhra Pradesh. This is part of the con­stel­la­tion of seven satel­lites to be put in place to roll out In­dia's coun­ter­part to the US-op­er­ated Global Po­si­tion­ing Sys­tem (GPS). In­dia's aim is to start its own satel­lite nav­i­ga­tion sys­tem. Ac­cord­ing to sci­en­tists from the Time and Fre­quency Di­vi­sion of the Coun­cil of Sci­en­tific and Industrial Re­search (CSIR), IRNSS-1D is equipped with three atomic clocks which will keep track of time and guide IRNSS-1D users. "Dur­ing calami­ties, we have to de­pend on the Amer­i­can GPS. Now, we are mov­ing to­wards de­vel­op­ing our own nav­i­ga­tional sys­tem," said se­nior sci­en­tist Ashish Agar­wal of CSIR's Na­tional Phys­i­cal Lab­o­ra­tory.

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