
41-11Time Measurement
3. Common-view method: e common-view method involves a reference transmitter (R) and two
re
ceivers
(A an
d
B). e tr
ansmitter
is in “c
ommon
vi
ew”
to bo
th
re
ceivers
. Bo
th
re
ceivers
co
mpare
th
e
si
multaneously
re
ceived
sig
nal
to th
eir
lo
cal
cl
ock
an
d
re
cord
th
e
da
ta
(F
igure
41.5). Re
ceiver
A re
ceives
th
e
sig
nal
ov
er
th
e
pa
th
τ
ra
and compares the reference to its local clock (R – Clock A).
Re
ceiver
B re
ceives
th
e
sig
nal
ov
er
th
e
pa
th
τ
rb
and records (R – Clock B). e dierence between
th
e
tw
o
me
asurements
is an es
timate
of th
e
di
erence
be
tween
th
e
tw
o
cl
ocks
. Er
rors
fr
om
th
e
tw
o
pa
ths
(τ
ra
and τ
rb
) that are common to the ...