?????????????(TEC)?? Ionosphere Models and Total Electron Content (TEC) Estimation

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?????????????(TEC)??Ionosphere Models and Total
Electron Content (TEC) Estimation

• ????????? ?? ??
• Tomoji TAKASU

2
??

• ?????
• ??????
• ??????(TEC)??

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????? (1/2)

• Appleton-Hartree Formula

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????? (2/2)

• ?????????????2?????????(TEC)???
• ?????????????????

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??????
Ionospheric Pierce Point
z
z
H
El
Ionosphere
RE
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??????????(1/2)
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??????????(2/2)
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????????????
PRN01-ALGO 2004/12/1
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???????? (DCB)

• ????????????????
• ???????????
• ??DCB/TGD
• ???DCB
• P1-P2, P1-C1(, P2-C2)
• ??????????????????????????

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??DCB/TGD???
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??DCB/TGD(P1-P2)
P1-P2 2004/10/01
IGS P1-P2
TGD
DCB (m)
Satellite PRN Number
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??DCB (P1-C1)
P1-C1 2004/10/01
IGS P1-C1
DCB (m)
Satellite PRN Number
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GLOBAL TEC???

• ????????

Sun-Fixed??
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??????(1/3)
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??????(2/3)
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??????(3/3)
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LOCAL TEC???

• ???Tayler??

18
?????

• ?????
• ?????

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???????
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??????????

• ????
• ?????

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????????
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??????(Local)
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??????(Global)
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??DCB
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???DCB