Re: A solution looking for a problem
Maybe more relevant, it solves the problem of paying drivers for e-hailing services.
14 publicly visible posts • joined 27 Jan 2011
Unfortunately, adding another network doesn't really make for a significant improvement. In open sky, any one network is sufficient for decent accuracy. Where we hope is makes a difference is when the sky is occluded, especially in downtown environments. Unfortunately the error sources in that environment are reflected signals (multipath) and poor geometry of available satellites (DOP). Except in flukes, adding more satellites into a narrow view of the sky doesn't really help the geometry problem and really only adds to the reflected signals problem.
This is all about sovereignty and boosting a tech sector (China still imports a LOT of GPS receivers from the US but that's going to change drastically in very short order).
Since the early days, the chinese government has been paranoid about anyone collecting coordinates on government and especially military installations for fear of nuclear ICBM attacks by foreign devils. Remember also, there are no civilian or private airports, all are run by the air-force no matter how back-water. The fact that technology has progressed to where every car and every cell phone tracks position and mapping is as easy as hitting "remember my location" on a GUI hasn't percolated up through the consciousness of the lawmakers. It may be a deliberate attempt to put pressure on multi-nationals but it's more likely a bureaucratic pissing contest.