GPS???????PPP ?????????

1
GPS???????PPP?????????
GPS Kinematic-PPP (Precise point positioning)
observation of crustal deformation by using 1-Hz
GPS data

• ?????????/????????????
• ???? Tomoji Takasu
• ttaka_at_gpspp.sakura.ne.jp, http//gpspp.sakura.ne.j
  p

2
???????GPS ??

• ????(RTK etc)
• ????????
• GPS???
• ????????
• ???????????
• GPS???
• ...

3
????????
??
???
??? ???
???
mm
VLBI SLR
???
???
GPS (??????)
cm
??SAR
???????GPS
dm
1?
1?
1?
1?
1??
1?
4
GPS vs ???
5
GPS??? ????

• K.M.Larson et al. (2003), Science
• J.Kouba (2003, 2005), SGeG
• Y.Bock et al. (2004), GRL
• M.Irwan et al. (2004), EPS
• S.Miyazaki et al. (2004), GRL
• Y.Ohta et al. (2006), EPS
• J.F.Genrich at al. (2006), JGR ...

6
PPP vs ????
7
PPP????????? (1)
IGS MIZU 5min??
IGS
IGR
E-W
N-S
10cm
U-D
CODE
JPL
8
PPP????????? (2)
IGS MIZU 30s??
IGS (Interpolated)
IGR (Interpolated)
E-W
N-S
10cm
U-D
CODE
JPL
9
PPP????????? (3)
IGS MIZU 1Hz
IGS (Interpolated)
IGR (Interpolated)
E-W
N-S
10cm
U-D
CODE (Interpolated)
JPL (Interpolated)
10
HR-PPP (High-rate PPP)
HR?? ???
Step1
1Hz??????
??? (??)
1Hz?? ??
HR?? ???
Step2
???????PPP
???
11
1Hz??????
IGS Sat Clock (300s)
Static-PPP(300s)
(300s)
IGS Sat Orbit (15min)
Rcv Clock
BIAS
ZTD
POS
OBS
(HR)
Clock Estimation
1Hz Sat Clock
Rcv Clock
QC
Interpolation
Sat Clock
12
????/PPP???

• EKF/S (PPP3pass, CLK1pass)
• ????? ??????????
• ????? ZTD??NMF/GMF
• ??????? IGS01/IGS05
• ???????????,????,?????
• Phase Windup??

13
HR-IGS?
(2004/12?, 58?)
14
??????? GT0.6.3
http//gpspp.sakura.ne.jp
15
???????
2004/12/25 00000-235959 GPST
1s
100s
10s
Block II/IIA Cs
Block II/IIA Rb
Block IIR Rb
??????(Max) 5min 1.5-10cm 30s 0.3-1cm
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1Hz HR-PPP????
MIZU(IGS) 2004/12/25 00000-25959GPST
E-W
N-S
U-D
CODE (Interpolated)
10cm
1Hz HR-PPP
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HR-PPP????

• ?????
• ??????????
• ?????????
• ?????????
• ?????????
• ????/??????
• ...

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?????????? (1)
MIZU (IGS)
10cm
19
?????????? (2)
PRN15-MIZU 2004/12/25 034-124
2cm
PRN15-MIZU 2004/12/26 030-120
2cm
20
Sidereal Filter
MIZU(IGS) 2004/12/25 00000-25959GPST
E-W
N-S
without Sidereal Filter
U-D
10cm
with Sidereal Filter
21
???????
Core2Duo 2.4GHz, Win XP, GT0.6.3, Matlab7.3
22
HR-PPP????????

• ??????? (2002/11/3)
• ???? (2003/5/26)
• ???????(2004/10/23)
• ?????? (2004/12/26)
• ??????????? (2006/4/21)
• ?????? (2006/5/17)
• ???(????)?? (2006/11/15)

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??????? (1)
2002/11/3 221241 (Mw7.9) 5.0km
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??????? (2)
IGS FAIR HR-PPP
25
??????? (3)
IGS BREW HR-PPP
L
R
26
??????? (4)
K.M.Larson et al. (2002), Science????
FAIR HR-PPP
27
???? (1)
2003/5/26 92432 (Mw7.0) 68.2km
0
50
100
km
28
???? (2)
IGS MIZU HR-PPP
29
???? (4)
K-NET IWT011 ???(2???)
30
???? (5)
K-NET IWT011 ???(2???)
31
??????? (1)
2004/10/23 85600 (Mw6.6) 16km
32
??????? (2)
E-W 2004/10/23 GPST
33
??????? (3)
N-S 2004/10/23 GPST
34
??????? (4)
U-D 2004/10/23 GPST
35
??????? (5)
????? ???(950240)
E-W
30
20
10
N-S
0
Displacements (cm)
-10
-20
10cm
U-D
-30
M6.0
-40
M6.5
M5.7
M6.8
-50
800
900
1000
1100
M6.3
36
??????? (6)
????? ???(950240)
E-W
30
20
10
N-S
0
Displacements (cm)
-10
-20
U-D
GSI F2? 10/22
-30
10cm
GSI F2? 10/24
-40
-50
800
900
1000
1100
37
?????? (1)
2004/12/26 05853 (Mw9.1) 30km
38
?????? (2)
(2006/12/26 GPST)
39
?????? (3)
IGS POL2 HR-PPP
IRIS AAK ??????
40
?????? (4)
IGS ARTU HR-PPP
IRIS ARU ??????
41
??????????? (1)
2006/4/20 232502 (Mw7.6) 22km
42
??????????? (2)
IGS PETS HR-PPP
IRIS PET ??????
43
?????? (1)
2006/5/26 225358 (Mw6.3) 10km
44
?????? (2)
IGS JOG2 HR-PPP
45
???(????)?? (1)
2006/11/15 111416 (Mw8.3) 30.3km
46
???(????)?? (2)
IGS PETS HR-PPP
IRIS PET ??????
47
???

• ???????GPS?????????GPS???????????
• PPP?????????????????
• ???????? 1Hz????
• ??????????????????