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r
o
v
e
th
e
3
-
D
P
E
ac
cu
r
ac
y
o
f
a
m
u
l
til
ater
atio
n
s
y
s
te
m
w
it
h
f
o
u
r
d
ep
lo
y
ed
GR
S
s
.
I
t
p
er
f
o
r
m
a
n
ce
i
n
e
m
itter
P
E
w
a
s
co
m
p
ar
ed
w
i
th
th
e
f
i
x
ed
GR
S
r
ef
er
en
ce
p
air
ap
p
r
o
ac
h
u
s
e
d
in
[
1
1
,
1
2
]
w
h
ich
is
al
s
o
b
ased
o
n
f
o
u
r
G
R
Ss
.
As
a
n
e
x
te
n
s
io
n
o
f
t
h
e
w
o
r
k
p
er
f
o
r
m
ed
i
n
[
1
0
]
,
th
i
s
p
ap
er
co
m
p
ar
es
t
h
e
P
E
ac
cu
r
ac
y
o
f
t
h
e
li
n
ea
r
later
ati
o
n
alg
o
r
ith
m
co
m
b
i
n
ed
w
it
h
t
h
e
GR
E
P
S
tech
n
iq
u
e
w
it
h
o
th
er
tech
n
iq
u
e
s
th
at
ar
e
b
ased
o
n
f
iv
e
G
R
Ss
.
T
h
is
is
to
v
alid
ate
if
th
e
u
s
ed
o
f
a
r
ef
er
en
ce
s
elec
tio
n
tec
h
n
iq
u
e
ca
n
m
ak
e
t
h
e
P
E
ac
cu
r
ac
y
o
f
a
f
o
u
r
GR
S b
ased
later
atio
n
alg
o
r
it
h
m
co
m
p
ar
ab
le
to
th
e
f
i
v
e
GR
S b
ased
later
atio
n
alg
o
r
it
h
m
s
.
T
h
e
r
em
in
d
er
o
f
th
e
p
ap
er
is
o
r
g
an
is
ed
as
f
o
llo
w
s
.
Sectio
n
2
an
d
Sectio
n
3
r
esp
ec
tiv
el
y
g
i
v
es
a
s
u
m
m
ar
y
o
f
t
h
e
GR
S
r
e
f
er
en
ce
p
air
lin
ea
r
later
atio
n
alg
o
r
ith
m
a
n
d
th
e
G
R
E
P
S
tech
n
iq
u
e.
T
h
e
s
i
m
u
latio
n
r
esu
lt
s
an
d
d
is
c
u
s
s
io
n
ar
e
p
r
esen
ted
in
Sect
io
n
4
f
o
llo
w
ed
b
y
th
e
co
n
cl
u
s
io
n
in
Sec
tio
n
5
.
2.
G
RS R
E
F
E
RE
N
CE
P
A
I
R
L
I
NE
A
R
L
A
T
E
RAT
I
O
N
AL
G
O
RI
T
H
M
I
n
th
is
s
ec
tio
n
o
f
t
h
e
p
ap
er
,
a
s
u
m
m
ar
y
o
f
t
h
e
GR
S
r
ef
er
en
ce
p
air
later
atio
n
alg
o
r
ith
m
f
o
r
a
m
i
n
i
m
u
m
co
n
f
i
g
u
r
atio
n
3
-
D
m
u
ltil
ater
atio
n
is
p
r
esen
ted
.
L
et
[
]
b
e
th
e
p
o
s
itio
n
o
f
an
e
m
i
tter
in
3
-
D
E
u
cl
id
ea
n
s
p
ac
e
an
d
th
e
co
o
r
d
in
at
e
o
f
th
e
i
-
th
,
j
-
th
,
k
-
th
an
d
m
-
th
G
R
S
s
b
e
[
]
,
[
]
,
[
]
an
d
[
]
r
esp
ec
tiv
el
y
.
Si
n
ce
GR
S
p
air
i
s
u
s
ed
as
r
ef
er
e
n
ce
f
o
r
th
e
T
DOA
esti
m
at
i
o
n
a
n
d
later
atio
n
alg
o
r
ith
m
,
le
t
t
h
e
i
-
th
an
d
j
-
th
G
R
S
s
to
b
e
ch
o
s
en
as
r
ef
er
en
ce
p
air
w
h
ile
t
h
e
n
o
n
-
r
e
f
er
en
ce
G
R
Ss
ar
e
b
e
lab
elled
m
-
th
an
d
k
-
t
h
.
T
h
e
P
D
m
ea
s
u
r
e
m
e
n
ts
o
b
tai
n
ed
w
i
th
t
h
e
i
-
th
a
n
d
j
-
th
G
R
S
as
r
ef
er
e
n
ce
p
air
as
p
r
esen
ted
in
[
1
0
]
ar
e
as
f
o
llo
w
s
:
,,
i
k
i
k
i
k
d
c
d
d
(1
)
,,
i
m
i
m
i
m
d
c
d
d
(
2
)
,,
j
k
j
k
j
k
d
c
d
d
(
3
)
,,
j
m
j
m
j
m
d
c
d
d
(
4
)
w
h
er
e
,
an
d
ar
e
t
h
e
T
DOA
m
ea
s
u
r
e
m
e
n
ts
o
b
tain
ed
u
s
i
n
g
th
e
i
-
t
h
r
ef
er
en
ce
G
R
S
w
it
h
t
h
e
k
-
th
an
d
m
-
t
h
as
n
o
n
-
r
e
f
er
en
ce
r
esp
ec
ti
v
el
y
;
an
d
ar
e
th
e
T
DOA
m
ea
s
u
r
e
m
e
n
ts
o
b
tain
ed
u
s
i
n
g
th
e
j
-
t
h
r
ef
er
e
n
ce
GR
S
w
it
h
t
h
e
k
-
th
a
n
d
m
-
t
h
as
n
o
n
-
r
ef
er
en
ce
r
esp
ec
ti
v
el
y
.
I
n
p
r
ac
tical
ap
p
licatio
n
,
s
ig
n
als
ar
e
co
r
r
u
p
ted
b
y
n
o
is
e
w
h
ic
h
w
ill
r
es
u
lt
i
n
P
D
m
e
asu
r
e
m
en
t
esti
m
atio
n
er
r
o
r
.
B
y
m
o
d
elli
n
g
t
h
e
P
D
e
s
ti
m
atio
n
(
P
DE
)
er
r
o
r
as
a
ze
r
o
m
ea
n
Ga
u
s
s
ia
n
r
a
n
d
o
m
v
ar
iab
le
w
i
th
p
r
o
b
a
b
ilit
y
d
en
s
it
y
f
u
n
ctio
n
as
(
)
[
8
]
,
th
e
P
D
m
ea
s
u
r
e
m
e
n
ts
i
n
E
q
u
atio
n
(
1
)
to
E
q
u
ati
o
n
(
4
)
ar
e
esti
m
ated
as:
,
,
,
ˆ
0,
i
k
i
k
i
k
d
d
N
(
6
)
,
,
,
ˆ
0,
i
m
i
m
i
m
d
d
N
(
7
)
,
,
,
ˆ
0,
j
k
j
k
j
k
d
d
N
(
8
)
,
,
,
ˆ
0,
j
m
j
m
j
m
d
d
N
(
9
)
Evaluation Warning : The document was created with Spire.PDF for Python.
I
n
d
o
n
esia
n
J
E
lec
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n
g
&
C
o
m
p
Sci
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SS
N:
2502
-
4752
P
o
s
itio
n
E
s
tima
tio
n
C
o
mp
a
r
is
o
n
o
f a
3
-
D
Lin
ea
r
La
tera
tio
n
A
lg
o
r
ith
m
w
ith
.
.
.
(
A
b
d
u
lma
lik
S
h
eh
u
Ya
r
o
)
209
w
h
er
e
an
d
ar
e
th
e
P
DE
er
r
o
r
s
tan
d
ar
d
d
ev
iatio
n
s
(
ST
D)
b
e
t
w
ee
n
th
e
i
-
th
r
ef
er
e
n
ce
GR
S
an
d
th
e
k
-
th
an
d
m
-
th
n
o
n
-
r
ef
er
e
n
ce
GR
Ss
r
esp
ec
tiv
el
y
w
h
ile
an
d
ar
e
th
e
P
DE
er
r
o
r
s
tan
d
ar
d
d
ev
iatio
n
s
b
et
w
ee
n
th
e
j
-
t
h
r
ef
er
e
n
ce
G
R
S
a
n
d
t
h
e
k
-
th
a
n
d
m
-
th
n
o
n
-
r
e
f
er
en
ce
GR
S
s
r
esp
ec
ti
v
el
y
.
T
h
e
P
DE
er
r
o
r
S
T
D
d
ep
en
d
s
o
n
th
e
r
ec
eiv
ed
e
f
f
ec
t
iv
e
S
NR
b
et
w
ee
n
t
h
e
G
R
S
p
air
.
A
l
g
eb
r
aica
ll
y
m
an
ip
u
lati
n
g
E
q
u
atio
n
(
6
)
,
E
q
u
at
io
n
(
7
)
,
E
q
u
atio
n
(
8
)
an
d
E
q
u
atio
n
(
9
)
w
ill
r
esu
lt
i
n
a
p
air
o
f
3
-
D
p
lan
e
eq
u
atio
n
i
n
t
h
e
f
o
r
m
[
1
0
]
:
,
,
,
,
,
,
,
,
i
k
m
i
k
m
i
k
m
i
k
m
A
x
B
y
C
z
D
(
1
0
)
,
,
,
,
,
,
,
,
j
k
m
j
k
m
j
k
m
j
k
m
A
x
B
y
C
z
D
(
1
1
)
w
h
er
e
t
h
e
co
ef
f
icie
n
ts
o
f
E
q
u
atio
n
(
1
0
)
an
d
E
q
u
atio
n
(
1
1
)
ar
e
f
u
n
ctio
n
s
o
f
th
e
P
D
m
ea
s
u
r
e
m
e
n
ts
an
d
G
R
S
co
o
r
d
in
ate
w
h
ich
ca
n
b
e
f
o
u
n
d
in
[
1
0
]
.
T
h
e
p
air
o
f
p
lan
e
eq
u
at
io
n
s
th
at
is
E
q
u
a
tio
n
(
1
0
)
an
d
E
q
u
at
i
o
n
(
1
1
)
ca
n
b
e
p
r
esen
ted
i
n
m
atr
ix
f
o
r
m
as f
o
llo
w
s
:
,
,
,
,
,
,
,,
,,
,
,
,
,
,
,
i
k
m
i
k
m
i
k
m
i
k
m
j
k
m
j
k
m
j
k
m
j
k
m
x
B
C
D
A
y
A
B
C
D
z
(
1
2
a
)
i
j
e
i
j
Q
x
a
(
1
2
b
)
T
h
e
u
n
d
er
d
eter
m
in
ed
L
S
eq
u
atio
n
i
n
Eq
u
atio
n
(
1
2
)
is
k
n
o
w
n
as
t
h
e
m
u
ltil
a
ter
atio
n
3
-
D
P
E
m
at
h
e
m
a
tical
m
o
d
el
w
it
h
m
in
i
m
u
m
G
R
S
co
n
f
i
g
u
r
at
io
n
.
T
h
e
lo
ca
tio
n
o
f
th
e
e
m
itter
is
o
b
ta
in
ed
b
y
f
i
n
d
in
g
t
h
e
in
v
er
s
e
m
atr
i
x
s
o
l
u
tio
n
o
f
E
q
u
atio
n
(
1
2
)
w
it
h
T
DOA
o
r
PD
m
ea
s
u
r
e
m
e
n
t
s
an
d
GR
S
s
c
o
o
r
d
in
ates
as
in
p
u
t
s
.
Deta
il d
er
iv
atio
n
o
f
th
i
s
ap
p
r
o
ac
h
ca
n
b
e
f
o
u
n
d
i
n
[
1
2
]
.
3.
G
RS R
E
F
E
RE
N
CE
P
A
I
R
S
E
L
E
C
T
I
O
N
M
E
T
H
O
DO
L
O
G
Y
I
n
[
1
0
]
,
a
co
n
d
itio
n
n
u
m
b
er
b
ased
r
ef
er
en
ce
tec
h
n
iq
u
e
ca
lle
d
GR
E
P
S
f
o
r
a
m
i
n
i
m
u
m
co
n
f
i
g
u
r
atio
n
3
-
D
m
u
lti
later
atio
n
s
y
s
te
m
w
a
s
p
r
o
p
o
s
ed
.
A
m
atr
ix
w
a
s
d
er
iv
ed
th
at
h
as
as
i
ts
e
n
tr
ies
o
n
l
y
th
e
P
D
m
ea
s
u
r
e
m
e
n
t
s
.
T
h
e
P
D
m
ea
s
u
r
e
m
en
t
s
o
b
tain
ed
f
o
r
ea
ch
o
f
th
e
p
o
s
s
ib
le
GR
S
p
air
co
m
b
i
n
atio
n
s
w
er
e
s
u
b
s
t
itu
ted
i
n
to
th
e
m
atr
i
x
,
an
d
th
e
co
n
d
itio
n
n
u
m
b
er
w
as
ca
lcu
lated
.
T
h
e
m
a
th
e
m
atica
l
ex
p
r
ess
io
n
f
o
r
th
e
co
n
d
itio
n
n
u
m
b
er
o
f
th
e
m
atr
i
x
b
ased
o
n
o
n
l
y
th
e
P
D
m
ea
s
u
r
e
m
en
t
s
o
b
tain
ed
u
s
i
n
g
t
h
e
i
-
t
h
an
d
j
-
t
h
GR
Ss
as
r
ef
er
en
ce
is
p
r
ese
n
ted
as f
o
llo
w
s
[
1
0
]
:
,,
,,
,
,
,
,
ˆˆ
ˆˆ
ˆ
ˆ
ˆ
ˆ
j
m
j
k
i
m
i
k
ij
i
m
i
k
j
m
j
k
dd
dd
K
d
d
d
d
M
(
1
3
)
w
h
er
e
̂
,
̂
,
̂
an
d
̂
ar
e
th
e
e
s
ti
m
ated
P
D
m
ea
s
u
r
e
m
e
n
ts
in
E
q
u
a
tio
n
(
6
)
,
E
q
u
atio
n
(
7
)
,
Eq
u
atio
n
(
8
)
an
d
E
q
u
atio
n
(
9
)
r
esp
ec
tiv
el
y
.
T
h
e
GR
S
p
air
w
h
o
s
e
P
D
m
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s
u
r
e
m
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s
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esu
lted
in
t
h
e
least
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n
d
itio
n
n
u
m
b
er
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alu
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s
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g
Eq
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3
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is
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e
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GR
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f
o
r
th
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ith
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m
m
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ap
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o
r
s
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tin
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i
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le
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as
r
ef
er
en
ce
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o
r
th
e
later
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n
alg
o
r
ith
m
i
n
Sectio
n
2
is
d
escr
ib
e
as
f
o
llo
w
s
;
1.
A
t a
g
iv
e
n
e
m
itter
p
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s
itio
n
,
o
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tain
t
h
e
P
D
m
ea
s
u
r
e
m
e
n
t se
t i
n
th
e
f
o
r
m
o
f
E
q
u
a
tio
n
(
1
4
)
f
o
r
ea
ch
o
f
th
e
p
o
s
s
ib
le
GR
S p
air
(
)
as r
ef
er
e
n
c
es.
,
,
,
,
,
,
,
ˆ
ˆ
ˆ
ˆ
,
,
,
i
j
m
n
i
k
i
m
j
k
j
m
d
d
d
d
d
(
1
4
)
Evaluation Warning : The document was created with Spire.PDF for Python.
I
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2.
Usi
n
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h
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P
D
m
ea
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u
r
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en
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et
f
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p
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u
b
s
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a
n
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E
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r
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ce
s
s
w
it
h
t
h
e
later
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n
al
g
o
r
ith
m
.
4.
RE
SU
L
T
S
A
ND
AN
AL
Y
SI
S
I
n
th
is
s
ec
tio
n
o
f
t
h
e
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er
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e
3
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D
P
E
u
s
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g
t
h
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o
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d
escr
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in
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2
w
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h
e
GR
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tech
n
iq
u
e
i
n
Sec
tio
n
3
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m
p
ar
ed
w
it
h
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th
er
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at
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ased
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p
r
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SF
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in
[
1
4
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an
d
th
e
f
i
x
ed
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r
ef
er
en
ce
p
air
L
S
ap
p
r
o
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h
(
MF
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1
3
]
.
P
o
s
itio
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r
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m
ea
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s
q
u
ar
e
er
r
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R
MSE
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u
s
ed
as
th
e
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er
f
o
r
m
a
n
ce
m
ea
s
u
r
e
f
o
r
co
m
p
ar
is
o
n
.
Ma
th
e
m
atica
ll
y
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t
h
e
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o
r
izo
n
ta
l
co
o
r
d
in
ate
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d
altitu
d
e
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MS
E
ar
e
r
esp
ec
tiv
el
y
o
b
tain
ed
as f
o
llo
w
s
:
22
1
1
ˆˆ
N
r
m
s
e
n
n
n
H
x
x
y
y
N
(
1
5
)
2
1
1
ˆ
N
r
m
s
e
n
n
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l
t
z
z
N
(
1
6
)
w
h
er
e
(
)
is
th
e
k
n
o
w
n
e
m
itter
p
o
s
itio
n
an
d
(
̂
̂
̂
)
is
th
e
esti
m
at
ed
em
it
ter
p
o
s
itio
n
at
th
e
n
-
t
h
Mo
n
te
C
ar
lo
s
i
m
u
la
tio
n
r
ea
liz
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n
.
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o
s
itio
n
R
MSE
ar
e
o
b
tain
ed
af
ter
Mo
n
te
C
ar
lo
r
ea
lizatio
n
an
d
it
is
as
s
u
m
ed
d
u
e
to
p
r
o
x
i
m
it
y
o
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th
e
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R
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s
th
a
t
th
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DE
er
r
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r
ST
D
in
E
q
u
atio
n
(
6
)
to
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q
u
atio
n
(
9
)
ar
e
eq
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al
th
at
is
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h
e
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E
ac
cu
r
ac
y
o
f
th
e
m
u
lt
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s
y
s
te
m
d
ep
en
d
s
o
n
th
e
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R
S
co
n
f
i
g
u
r
at
io
n
.
A
c
co
r
d
in
g
to
C
h
a
n
et
a
l
[
1
8
]
,
f
o
r
a
to
tal
o
f
f
o
u
r
G
R
S
s
,
s
q
u
ar
e
co
n
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ig
u
r
ati
o
n
w
it
h
t
h
e
a
G
R
S
at
ea
ch
v
er
tex
r
es
u
lt
s
i
n
b
etter
P
E
ac
cu
r
ac
y
.
T
h
u
s
,
f
o
r
th
is
r
ea
s
o
n
,
th
e
s
q
u
ar
e
GR
S
co
n
f
ig
u
r
atio
n
is
ad
o
p
ted
f
o
r
th
e
an
al
y
s
is
an
d
th
e
d
is
tr
ib
u
tio
n
i
s
s
h
o
w
n
i
n
Fi
g
u
r
e
1
.
Fig
u
r
e
1
.
1
0
k
m
s
q
u
ar
e
GR
S c
o
n
f
i
g
u
r
atio
n
Fig
u
r
e
2
.
1
0
k
m
f
i
v
e
-
s
q
u
ar
e
G
R
S c
o
n
f
i
g
u
r
atio
n
As
f
o
r
th
e
S
F
-
T
L
S
an
d
MF
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L
S
ap
p
r
o
ac
h
es
th
at
ar
e
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as
ed
o
n
f
iv
e
G
R
S
s
,
a
f
i
v
e
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s
q
u
ar
e
GR
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co
n
f
i
g
u
r
atio
n
is
ad
o
p
ted
as sh
o
w
n
in
F
ig
u
r
e
2
.
Fo
r
th
e
an
a
l
y
s
is
,
s
ix
d
if
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er
en
t
e
m
i
tter
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o
s
itio
n
s
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r
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co
n
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ed
w
it
h
t
h
e
c
o
o
r
d
in
ates
s
h
o
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n
in
T
ab
le
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ab
le
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Selecte
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m
i
tter
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tio
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t
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A
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(
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13
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-
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(
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22
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(
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4
7
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Evaluation Warning : The document was created with Spire.PDF for Python.
I
n
d
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J
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p
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N:
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4752
P
o
s
itio
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s
tima
tio
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a
r
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211
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ar
y
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t
h
e
P
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r
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r
S
T
D
(
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f
r
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m
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m
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th
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n
tal
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r
d
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ate
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d
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o
f
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o
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h
m
i
n
Sec
tio
n
2
w
i
th
t
h
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G
R
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tech
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q
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Sect
io
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3
ar
e
o
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tain
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m
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w
it
h
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at
o
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s
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n
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th
e
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MF
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L
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ap
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r
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ac
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u
r
es
3
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4
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5
,
6
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7
an
d
8
s
h
o
w
s
th
e
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tal
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ate
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d
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m
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ar
is
o
n
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r
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er
r
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r
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r
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g
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o
f
0
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2
m
at
e
m
i
tter
p
o
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itio
n
s
A
,
B
,
C
,
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E
a
n
d
F
r
esp
ec
tiv
e
l
y
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r
r
esp
ec
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o
f
t
h
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E
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ith
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u
s
ed
,
th
e
h
o
r
izo
n
ta
l
co
o
r
d
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ate
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d
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e
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E
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n
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e
i
n
th
e
P
DE
er
r
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r
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f
r
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m
0
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2
m
a
n
d
it
v
ar
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it
h
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h
e
e
m
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n
.
T
ab
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s
h
o
w
s
t
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e
p
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n
R
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m
p
ar
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s
o
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at
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r
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D
o
f
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o
m
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h
o
w
s
t
h
at
th
e
u
s
e
o
f
th
e
GR
E
P
S
tech
n
iq
u
e
w
it
h
th
e
lat
er
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n
alg
o
r
ith
m
f
o
r
th
e
m
in
i
m
u
m
co
n
f
i
g
u
r
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in
Sectio
n
2
h
ad
im
p
r
o
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o
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P
E
ac
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.
I
t
ca
n
b
e
s
ee
n
to
o
u
tp
er
f
o
r
m
th
e
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L
S
a
n
d
MF
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L
S
w
h
ich
ar
e
b
ased
o
n
f
i
v
e
G
R
Ss
at
t
h
e
s
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ted
e
m
itter
p
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s
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n
s
.
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r
in
s
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at
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m
itter
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o
s
iti
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n
A
,
th
e
h
o
r
izo
n
tal
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o
r
d
in
ate
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MSE
w
ith
t
h
e
GR
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tech
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iq
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is
1
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4
3
m
w
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at
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1
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1
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t
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n
ta
l
co
o
r
d
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ate
R
M
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o
f
th
e
later
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o
r
ith
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w
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h
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e
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tech
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e
m
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s
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o
f
t
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R
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tech
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e
w
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h
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e
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ith
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f
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MF
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L
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i
n
h
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ted
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ate
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t
5
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tiv
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e
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u
s
e
o
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th
e
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tech
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e
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ith
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e
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o
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t 9
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%.
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ab
le
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o
s
itio
n
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m
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ar
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o
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h
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th
er
tech
n
iq
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es
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t
t
e
r
p
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t
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o
n
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o
r
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t
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M
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(
m)
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l
t
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t
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(
m)
SF
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[1
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N
e
v
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n
W
H
L
,
Qu
il
ter T
J,
Wee
d
o
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Ho
g
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AM
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ro
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o
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2
0
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.
[2
]
S
o
HC.
S
o
u
rc
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a
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ti
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n
:
a
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s
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ly
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:
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ich
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0
1
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5
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6
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[3
]
L
ian
g
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Do
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f
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ss
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ms
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2
0
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3
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4
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0
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1
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2
1
0
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.
[4
]
A
h
m
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d
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,
S
a
ll
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M
.
L
o
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li
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En
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e
.
2
0
1
6
;
1
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1
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1
9
–
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2
5
.
[5
]
[5
]
S
h
i
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Zh
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n
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H,
W
a
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g
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A
TDO
A
tec
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.
2
0
1
6
;
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4
(2
1
):5
6
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5
6
9
5
.
[6
]
Kh
u
d
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ir
A
A
,
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b
b
a
r
S
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si
m
S
u
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,
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D.
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ss
In
d
o
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r
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T
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d
o
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J
o
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rn
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l
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El
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En
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Co
mp
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ter
S
c
ien
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e
.
2
0
1
6
;
3
(2
):
3
9
2
–
4
0
9
.
[7
]
M
a
n
ti
ll
a
-
G
a
v
iri
a
I
A
,
L
e
o
n
a
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l
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ti
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,
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lb
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stre
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d
o
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V
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o
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m
s
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u
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tera
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(M
LA
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)
s
y
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m
s in
a
irp
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rf
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c
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ig
n
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a
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Vi
d
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o
Pr
o
c
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ss
in
g
.
2
0
1
5
;
9
(
7
):
1
5
4
9
–
1
5
5
8
.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
n
d
o
n
esia
n
J
E
lec
E
n
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&
C
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p
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N:
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4752
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213
[8
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G
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,
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to
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f
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d
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2
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1
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[9
]
Ch
a
it
a
n
y
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DE,
Ku
m
a
r
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NV
S
S
,
Ra
o
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S
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a
m
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me
th
o
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in
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ter
min
in
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ta
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tern
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h
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Est
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m
.
A
d
v
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in
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tri
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2
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7
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1
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h
a
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S
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f
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o
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stim
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fen
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d
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2
0
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2
]
Bu
c
h
e
r
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M
isra
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A
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b
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3
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G
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1
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[1
4
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1
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[1
5
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9
.
[1
6
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Ru
i
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KC.
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4
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3
.
[1
7
]
Ru
i
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tern
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0
1
2
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6
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0
8
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[1
8
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Re
sto
n
,
V
A
,
USA
.
2
0
0
6
;
1
:3
6
5
–
3
7
3
.
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