16 ms·
I'd be interested to see an illustration of how selective availability works -- if your goal is to ensure that a position cannot be determined accurately, how d
by mherdeg 5y ago
I'd be interested to see an illustration of how selective availability works -- if your goal is to ensure that a position cannot be determined accurately, how do you alter the signals produced by your satellites to correctly introduce only the desired amount of error?
- genewitch 5y agoCivilian GPS does this two ways, clock skew and how many digits of resolution the timestamp is.
- garaetjjte 5y agoSelective availability worked by introducing pseudorandom variation into satellite clock used to generate C/A signal, which directly mapped into pseudorange errors. http://www.nbmg.unr.edu/staff/pdfs/blewitt%20basics%20of%20gps.pdf http://www.nbmg.unr.edu/staff/pdfs/blewitt%20basics%20of%20g... (page 8)