China's competitor to GPS is nearly finished after years of work. Project lead Ren Chengqi has revealed that the Beidou Navigation Satellite System's core was completed earlier in December, and that the last two satellites should reach orbit "before 2020." This will technically be the third phase of Baidou, which first rolled out in 2000, but it represents the culmination of the satellite system. in its present form. You won't see a major upgrade until 2035, Ran said.