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KSWC Action for Observation and Research of Ionosphere
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Contents
1. KSWC Overview
2. Operating System for Ionosphere
Observation
3. Tailored Model
4. Future Plan
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KSWC Overview
1975
Sunspot Obs.
Solar Radio
Spectrograph
Internet SWx Service
(http://spaceweather.go.kr)
F10.7 Solar
Flux Meter
Alerts Service
via SMS
200919671966
Foun. of
the RRA
Iono. Obs. & HF Predi.
1998
NOAA Agreement
(Personnel exchanges;
Hong(2010), Onsager(2011),
Han(2012), Tegnell(2013))
Geomag. Obs.
1985 1995 2006 2007
Radio Act
2011
Opening KSWC(ACE tracking station, IPS, RIMS)
The 14th RWC of
ISES
2011
RRA started to observe ionosphere and service HF prediction in 1967.
KSWC founded in 2011 at JEJU and operated various observation system including
satellite receiving antenna.
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Models & Services
ASSA, IPS-Enlil,
NAIRAS, IRI-VOACAP, GIC, etc.
(29ea.)
Customers
Satellite
Comm.
Comm.DefenseDefense
Power
Aviation
Products
3-hourly Condi. & Forecast
3-day Forecast(daily)
27-day Forecast(weekly)
HF Prediction(monthly)
Alerts & White Alerts
WWW
Observation
Spa
c
eG
roun
d B
ased
Ionosondes (x2)
& TEC (x5)
Mag (x3)
SRS (30MHz~2.5GHz)
F10.7 Meter
IPS
RIMS (30MHz~18GHz)
ACE, DSCOVR,
STEREOTracking
GIC Monitor (x4)
Operate 11 observation systems for monitoring space weather.
Produce alerts & forecast of space weather and supply various customers.
KSWC Overview
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Operating System for Ionosphere Observation
DIGISONDE
VIPIR
GNSS
Vertical sounding at icheon and jeju
Oblique sounding between Korea to China
Oblique sounding between Korea to Japan
TEC & scintillation monitor × 5
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Operating System for Ionosphere Observation – DIGISONDE
Jeju(’09~)
Icheon(’10~)
DIGISONDE SYSTEM(DPS-4D)
Vertical sounding at Icheon and Jeju since 2009.
Started oblique sounding for KSWC – IGGCAS(China) in September 2016.
now : BJ, WH <=> IC, JJ future : BJ, WH, MH, SY <=> IC, JJ
The purpose of oblique sounding is observing ionosphere of west sea.
MH
BJ
WH
SY
IC
JJ
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BEIJING->ICHEON BEIJING->JEJU
Operating System for Ionosphere Observation – DIGISONDE
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ACE
Operating System for Ionosphere Observation – VIPIR
VIPIR SYSTEM
started oblique sounding for KSWC-NICT(Japan) in september 2016.
=> NICT – transmit(4 site), KSWC – receive(2 site)
The purpose of oblique sounding is observing ionosphere of east sea.
ICHEON
JEJU
WAKANAI
KOKUBUNJI
YAMAGAWA
OKINAWA
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Wakanai → Icheon
Operating System for Ionosphere Observation – VIPIR
Kokubunji → Icheon
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Yamagawa → Icheon
Operating System for Ionosphere Observation – VIPIR
Okinawa → Icheon
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GNSS receivers installed at 5 sites for observation of ionosphere scintillation.
Analyze L1&L2 cno, TEC, σ, S4
40min
Operating System for Ionosphere Observation – GNSS
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40min
HF MODEL
GNSS MODEL
Real-time usable HF frequency for military, airline, ships
Data assimilated by IRI model
Real-time positioning error for military, ships, land survey
Tailored MODEL
Use 60 GNSS stations in korea
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HF model uses real-time digisonde data and be assimilated by IRI model.
It provides usable HF frequency for military, airlines, ships.
40min
MILITARY AIRLINES SHIPS
#1
#2
#3
Tailored MODEL – HF MODEL
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GNSS model collects 60 stations data and analyzes each of stations data.
It analyzes observation numbers, multi-pass, cycle-slip, positioning error,..etc
This model is mainly used by military, ships, land survey company.
Tailored MODEL – GNSS MODEL
40min
Observation number
East/North/Up positioning error
cycle-slipMulti-pass
KOREA GNSS STATIONS
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DATA SERVICE- www.spaceweather.go.kr
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Develop ionosphere forecasting model(2016~2018)
Data merge – DIGISODE + GNSS + SATELLITE
Model integration – Empirical model + Numerical model
40min
Future Plan
Analyze of Ionosphere TID (2017~2018)
Analyze TID using GNSS data and DIGISONDE data
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Jun-Chul Mun ([email protected])