@Martian,
Some quick points:
1) I agree BeiDou has much better accuracy, but what would you rather have crazy levels of accuracy or redundancy?
2) The Navic (IRNSS) signals have been received and verified in Germany and Finland (5000 km from the Extended Areas Network of Navic).
3) If BeiDou is so accurate and if for your military only accuracy matters, then why are you guys going after Glonass? Your people have already stated that eventually even GPS signal would be integrated for the civilian users.
4) India already has devised the GPS+GLONASS+Navic receivers - G3OM. Thats triple redundancy in a small 17 gram package. Now do you expect the Russians and Americans to ever be on the same side of a war?
5) The Navic signal which already covers in its Extended Area Coverage (20 mtr accuracy) almost the whole of China and the South China Sea overlaps with the Japanese differential GPS network (MSAS). How does that sound to you?
6) Have you heard of the ionospheric scintillation effect on L1 and L2 carrier frequencies? And if you have what do you know of the ionospheric scintillation effect on L5 and/or S carrier frequencies that Navic provides?
7) Have you ever heard of a continuous GPS input which when mated to a imaging seeker does some really cool things? Unless you envisage a signal jamming all through a trajectory.....which is kind of possible for you western trained Chinese.
8) Much of the coverage is for IOR and barely enough for the land mass and beyond land borders. Now why must that be?
9) Please feel free to keep that accuracy level. We don't need it. We are happy with our regional network that can basically fry anything within 1500 km of our borders. Our air force used civilian grade GPS during Kargil (even when it was selectively denied several times) to manage bombing of Paki held heights. How much confidence does that leave you with?
10) Europeans have the same level of accuracy as BeiDou but don't they still live in mortal fear of Glonass equipped forces?
11) And how do you know your own BeiDou civilian accuracy of 10 meters is not available for us too in the Extended Area coverage where our satellites provide 20 meter accuracy?