The positioning accuracy were
respectively 3.09 cm, 3.10 cm and 3.08 cm in 2drms,
and 3.88 cm, 3.89 cm and 3.88 cm in S.D. of altitude.
The three patterns of positioning distribution both in
2drms and S.D. are coincident with each other. Thus the
three receivers are confirmed to show remarkable
resemblance in their performance. Their ‘Fix’ solution
rate is 87.7 % every second for more than 20 hours’
positioning.