[ghshephard]

I'm trying to figure out if you are serious about "Chinese Map Obfuscation Schemes". Your description of SA and DGPS is spot on, but I can't think of any reason that China would want to obfuscate their maps now that satellites have mapped their country.

[sern]

Paranoia, maybe? But yeah, it's rather pointless. Even more so since GPS vendors have access to the algorithm.