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Accuracy of GPS
The GPS watch is accurate to 3 metres CEP (50 %)
outdoors. The specification of accuracy refers to
so-called 50 % CEP (circular error probability).
This means that with excellent satellite reception, 50 %
of all measurements are located within a circle with
the specified radius of 3 m. However, this also means
that half of the measurement points are outside of this
radius.
But 95 % of all measurement points are located within
a circle with twice the specified radius. With excellent
satellite reception, nearly all points are located within a
circle with a radius of 6 m.
95
%
of
al
l
me
as
ur
ing
po
int
s
50
%
of a
ll
me
asu
rin
g p
oin
ts
3 m
6 m
Kor
rekt
ur
satellite reception, nearly all points are located within a
satellite reception, nearly all points are located within a
Kor
rekt
ur
Kor
rekt
ur
Kor
rekt
ur
95
%
of
al
l
me
as
ur
ing
po
int
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V
1
But 95 % of all measurement points are located within
But 95 % of all measurement points are located within
a circle with twice the specified radius. With excellent
a circle with twice the specified radius. With excellent
satellite reception, nearly all points are located within a
satellite reception, nearly all points are located within a
Summary of Contents for H05-GPS-6A
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