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Fig. 1. Measurement of telemetric system of small satellite in Josaphat
Laboratory, Center for Environmental Remote Sensing, Chiba University,
Japan (Prof. Josaphat team)
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ResearchersF
Program Leader :
Josaphat Tetuko Sri Sumantyo (Center for Environmental Remote Sensing,
Associate Professor)
Reseachers :
Katsumi Hattori (Graduate School of Sciences, Professor)
Toshinori Satoh (Graduate School of Sciences, Professor)
Takahiro Miyauchi (Graduate School of Sciences, Professor)
Kazuteru Namba (Graduate School of Advanced Integration Science, Assistance
Professor)
Objective :
Previously, JAXA, NASA, ESA, CSA etc already have launched some synthetic
aperture radar (SAR) onboard satellites. These sensors are very huge, weigth,
high power, high cost etc. In this COE Start-up Program, we propose a circularly
polarized synthetic aperture radar (CP-SAR) onboar small satellite with
payload about 100 kg, peak power 150 Watts, low cost etc. In this satellite,
we also plan to install the cameras, GPS system for GPS SAR etc. To realize
this satellite for Earth diagnosis, Center for Environmental Remote Sensing,
Graduate School of Sciences, and Graduate School of Advanced Integration
Science of Chiba University hold a collaboration. In this program we promote
the research and education activities as below :
(1) Development of CP-SAR onboard unmanned aerial vehicle (UAV)
(2) Development of CP-SAR onboard small satellite
(3) Ground experiments and survey to collect the Earth surface information
(4) International Joint Research and Education Program, including international
conference
Research Programs
We are holding some program as below to realize our program :
 
Fig.2. CP-SAR UAV developed in our laboratory (left) and the design (right)(Prof.
Josaphat team)
(1) Development of CP-SAR onboard Unmanned Aerial Vehicle (CP-SAR UAV)
The program leader (Prof Josaphat team) already has developed the prototype of CP-SAR UAV as shown in Fig. 2 during the fiscal year 2007 to 2009 under the supporting of Japanese Ministry of Education and Technology (Monbukagakusho) - Grant-in-Aid for Scientific Research - Young Researcher (A) Program. Base on this result, we are improving the performance of SAR signal processing by developing the high speed, more efficient and precise processor which FPGA onboard (Dr Namba team). As published by some mass media, CP-SAR UAV could be employed for Earth diagnosis, including disaster, agriculture, Cryosphere, Geology, Human rescue etc.
Fig. 3. Illustratio of CP-SAR onboard small satellite developing by our
laboratory (Prof Josaphat team)
(2) Development of CP-SAR onboard small satellite
We already have started to investigate the characteristics of our CP-SAR
onboard small satellite with members are staffs of JAXA, University of
Tokyo, Nihon University, National Institute of Environmental Studies etc.
We hope our platform is the first CP-SAR sensor to diagnosis the Earth
surface, i.e. global warming, human activities etc.
Fig.4. The fault modelling (Prof. Miyauchi and Prof. Satoh team)
 
Fig.5. Interaction of earthquake electromagnetics phenomenon and Lithosphere
- Atmosphere - Ionosphere coupling model (left), Statistics result of GPS-TEC
reduction phenomenon at Indonesian area (right)(Prof. Hattori team)
(3) Ground experiments and survey to collect the Earth surface information
Prof. Hattori team and Prof. Josaphat team from FY2008 already have held some ground experiments and surveys to collect the Earth surface information, including the Interaction of earthquake electromagnetics phenomenon and Lithosphere - Atmosphere - Ionosphere coupling model, Statistics result of GPS-TEC reduction phenomenon at Indonesian area, subsidence measurement by using GPS etc. The result is employed to calibrate the model and result derived by SAR data. Then the collaboration with domestic and overseas researchers to calibrate our CP-SAR onboard UAV and small satellite.
Fig.6. International Workshop on Synthetic Aperture Radar at Chiba University
(4) International Joint Research and Education Program, including international
conference
We promote the education and research activities with sit-in program, internship
program to up-grade the skill of domestic and overseas young scientist
and graduate students in small satellite and sensors development for Earth
diagnosis. International conferences, workshop, seminar, professorship program, establishment
of representative office at overseas etc is also proposed to get smart
young scientists.
Concept :
Contact person :
Josaphat Tetuko Sri Sumantyo, Ph.D,
Associate Professor
Center for Environmental Remote Sensing, Chiba
University
1-33, Yayoi-cho, Inage-ku, Chiba-shi 263-8522 Japan
Telp.
+81(0)43-290-3840 Fax +81(0)43-290-3857
Email jtetukoss@faculty.chiba-u.jp
Website
http://www2.cr.chiba-u.jp/lab/jtetukoss/
Documents
PDMid Report FY 2009 Chiba University COE Start-up Program (5.5MB)[Download] New !
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Japanese