1. SAR-GEO Satellite oceanography - presentation 201214542 | Sang-gu Han
| So Hyun Bae

2. INDEX Introduce Tsunami How to improve spatial temporal resolution
What improved sensor can do
Conclusion
Q & A
INDEX

3. Introduce

4. Intro. Tsunami Do what How to LEO MEO GEO
Con.
Q & A
LEO
MEO
GEO
Wikipedia,“Medium Earth orbit”,

5. -> orbital period : 90 to 100 minutes
Intro.
Tsunami
Do what
How to
Con.
Q & A
LEO
MEO
GEO
-> orbital period : 90 to 100 minutes
-> use: Resource exploration ,Military Operation,
Ocean- Atmosphere observation
earthobservatory.nasa.gov/Features/.../page2.php,

6. -> orbital period : 12 hours. -> use: Communication, Navigation,
Intro.
Tsunami
Do what
How to
Con.
Q & A
LEO
MEO
GEO
-> orbital period : 12 hours.
-> use: Communication, Navigation,
GPS
Wikipedia, “Molniya orbit“,

7. Intro. Tsunami Do what How to LEO MEO GEO
Con.
Q & A
LEO
MEO
GEO
-> orbital period : same as rotation
period of earth
-> use: meteorological satellite

8. LEO GEO Intro. Tsunami Do what How to LEO MEO GEO Con. Q & A Orbit
Polar
Equator
Altitude
2000km
36000km
Resolution
High
Low
Uses
• exploration of resources
• Ocean, Atmosphere Observation
• Military operation
• broadcast
• communication
• environment
satellite
NOAA series
FY-1series
GOES, EUMETSAT, Fengyun,
INSAT
Advantage
• Easy access to data
• minimizes risk of missing data
• lower in cost
• can observe same location
Dis-
advantage
• service fee
• shorter life span
• same position
• more costly to install
• Long path length
• polar regions cannot be covered.
GEO

9. Tsunami

10. Intro. Tsunami Do what How to Tsunami Damage Need
Con.
Q & A
Tsunami
Damage
Need

11. 6,000 injured 16,000 deaths 2,500 people missing Intro. Tsunami
Do what
How to
Con.
Q & A
Tsunami
Damage
6,000 injured
Need
16,000 deaths
2,500 people missing
google,"east japan tsunami",

12. Intro. Tsunami Do what How to Tsunami Damage Need
Con.
Q & A
Tsunami
Damage
Need

13. What improved sensor can do

14. Intro. Tsunami Do what How to Now Future
Con.
Q & A
Now
Future
East japan tsunami
KOSC, KORDI

15. SAR-GEO Intro. Tsunami Do what How to Now Future Con. Q & A
-> exact scale of tsunami
-> time of arrival
-> exact and real time
observation information
-> reduce damage
-> lessen citizen’s uneasiness
-> storm surge, large scale disaster
-> permit weather cast more precise

16. spatial temporal resolution
How to improve
spatial temporal resolution

17. Intro.
Tsunami
Do what
How to
Con.
Q & A
SAR
Resol.
Algorithm
SAR
GEO

18. SAR Effect of broadening antenna But SAR need moving Intro. Tsunami
Do what
How to
Con.
Q & A
SAR
Resol.
SAR
Algorithm
Effect of broadening antenna
But SAR need moving

19. Intro.
Tsunami
Do what
How to
Con.
Q & A
SAR
Resol.
Algorithm
rotating

20. Improved Resolution Temporal resolution 15min spatial resolution 50m
Intro.
Tsunami
Do what
How to
Con.
Q & A
SAR
Resol.
Improved Resolution
Algorithm
Temporal resolution 15min
spatial resolution 50m
112m per 15minutes
We need Improved SAR and
GEO rotating orbit and speed

21. algorithm Intro. Tsunami Do what How to SAR Resol. Algorithm
Con.
Q & A
SAR
Resol.
algorithm
Algorithm
Doppler effect
Rias coast
Light angle

22. Conclusion

23. Q & A

24. Thank you Satellite oceanography - presentation - Reference
Wikipedia,“Medium Earth orbit”,
네이버,“저궤도 위성”,
earthobservatory.nasa.gov/Features/.../page2.php,
google,"meo satellite",
google, “Medium earth orbit“,
Wikipedia, “Molniya orbit“,
네이버,“지진해일”,
정병표 , Jeong, Byeong-Pyo 저, “동북지반 태평양 앞바다 지진의 지진 쓰나미 피해의 개요와 몇 가지의 과제”, [한국방재학회지],11권제2호,p11
네이버,“쓰나미”,
google,"east japan tsunami",
한국 해양연구소
| Sang-gu Han
| So Hyun Bae