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2013 Asia-Pacific Conference on Synthetic Aperture Radar
"Overcoming the Hardships: Responding to Disasters with SAR"
Plenary Talks

Schedule

Tuesday 24 September 2013
Plenary session I 9:00-10:20 Convention Hall 300

9:00-9:20
Dr. Masanobu Shimada, JAXA, Japan
"New Earth Observation Scenario using the ALOS-2 with the L-band high-resolution and fullpolarimetric SAR"

9:20-9:40
Dr. Wen Hong, MITL-IECAS, P.R. China
"Research Progresss on Multidimensional Space Joint-observation SAR"

9:40-10:00
Dr. Young Kil Kwag, Korea Aerospace University, Korea
"Spaceborne Synthetic Aperture Radar in Korea"

10:00-10:20
Dr. Manfred Zink, DLR, Germany
"TanDEM-X: Operational DEM Generation and Pre-Cursor for Future SAR Missions"

Plenary session II 10:50-11:30 Convention Hall 300

10:50-11:10
Mr. Robertus Heru Triharjanto, LAPAN, Indonesia
"System Design of LAPAN-CHIBA Microsatellite"
11:10-11:30

Dr. Wolfgang-Martin Boerner, UIC, USA
" The challenge for the still unresolved development of Multi-band Equatorially Orbiting POLSAR
satellite sensors - an integral task for the major space-sar technology centers"


Abstracts

New Earth Observation Scenario using the ALOS-2 with the L-band highresolution and full-polarimetric SAR
Dr. Masanobu Shimada (Earth Observation Research Center, Japan Aerospace Exploration Agency, Japan)

Abstract
During more than 20 years JAXA history on spaceborne and airborne SAR, L-band SAR has been adopted under the unique mission goal, i.e., the global observation. Over the JERS-1 SAR’s essential findings on the surface deformation and the deforestation monitoring, both of which owe to the signal penetration of vegetation at L-band, ALOS has achieved the wider and more comprehensive global understanding of the earth phenomena covering four spheres, i.e., largely biosphere, geosphere, cryosphere, and the hydrosphere, and it also contributed the disaster monitoring. On the other way, the airborne SAR has been developed and utilized for investigating the future technology development and the applications, i.e., polarimetric application and the interferometric application.
Under these preparative facts, the ALOS-2 is being developed and prepared for near future launch and for more confidential observation of the four spheres using the improved SAR (resolution, polarization, and the qualities) and the systematic observations. In this presentation, the ALOS-2 scientific outcome will be presented.

Masanobu Shimada received the BS and MS degrees in aeronautical engineering from Kyoto University in 1977 and 1979, and the PhD degree in electrical engineering from the University of Tokyo in 1999 He joined the National Space Development Agency of Japan (NASDA, former Japan Aerospace Exploration Agency (JAXA)) in 1979, and he designed NASDA scatterometer by 1985. From 1985 to 1995, he developed data processing systems for optical and SAR data (MOS-1, SPOT, and JERS-1) at the Earth Observation Center. He was a one-year visiting scientist at the Jet Propulsion Laboratory in 1990. After launch of JERS-1 in 1992, he was in charge of the JERS-1 SAR calibration and validation. From 1995, he has been assigned duties at Earth Observation Research Center (EORC), where he is in charge of the JERS-1 Science project (Global rainforest and boreal forest mapping project and SAR interferometry project). He also developed a polarimetric airborne SAR (Pi-SAR-L) and calibrated the Ocean Color Temperature Scanner and AVNIR of ADEOS. In the late 1990s he initiated the ALOS science project, which has calibration and validation of the ALOS sensors. He mainly focuses on the PALSAR calibration, validation, and application. He also initiated the Kyoto and Carbon Initiative project for monitoring the forest and wetland using the time series PALSAR mosaics. His main outputs are the global SAR mosaics showing the annual deforestation change and largescale land surface deformations. He has been a Principal Researcher of JAXA and leading the ALOS and ALOS-2 science projects. His current research interests are high resolution imaging for spaceborne and airborne SARs (PALSAR-2 and Pi-SAR-L2), calibration and validation, and SAR applications including polarimetric SAR interferometry.


Research Progresss on Multidimensional Space Joint-observation SAR
Dr. Wen Hong (MITL-IECAS, P.R. China)

Abstract
With the application requirement and technology development, the necessity and tendency of Synthetic Aperture Radar (SAR) imaging within the framework of multidimensional space joint-observation, which are polarimetry, frequency, angle, time series and etc., evoke catholic interests in SAR imaging research nowadays. Recent research progress on the Multidimensional Space Joint-observation SAR (MSJosSAR) in the National Key Lab of Microwave Imaging Technology, Institute of Electronics, Chinese Academy of Sciences (MITL-IECAS) is reported in this talk, where the a sphere cluster coordinate system is defined as the modeling basis on the demand of information fusion for SAR multidimensional space joint-observation. Further more, the advantage of MSJosSAR is revealed by using Kronecker product decomposition for better understanding of target scattering mechanisms, with the hypothesis and basic framework on which the MSJosSAR signal processing relies on. Tentative studies on multi-layer material with PolinSAR technique, anisotropic scattering mechanisms with multi-directional observation (i.e. circular SAR technique), and instantaneous time-variant target with array SAR technique are demonstrated as the initial verification of the above defined hypothesis and framework. Finally, the value of joint observation space numbers for typical SAR configurations is enumerated, followed by the perspective discussions on the future work for MSJosSAR study.

Wen Hong got her Ms.D and Ph.D in Northwestern Polytechnical Univ.(NPU) and Beijing Univ. of Aeronautics and Astronautics(BUAA), P.R.China, in 1993 and 1997 respectively. From 1997 to 2002, she served as a faculty staff in the Dept. of E.E., BUAA. In between, she was a guest scientist for one year in the Microwaves and Radar Institute in German Aerospace Center (DLR-HF) in 1998. She joined the Institute of Electronics, Chinese Academy of Sciences (IECAS) since 2002 till now. As a researcher and a Ph.D. candidate program supervisor in the IECAS, her research interests are Pol/PolinSAR data processing, 3D SAR imaging, sparse signal processing in microwave imaging and etc. She was the Executive Chair for the Dragon3 Advanced Training Course on Land Remote Sensing (MOST-ESA) in 2012, and she acts now as the Vice Chair, IEEE GRSS Beijing Sector.


Spaceborne Synthetic Aperture Radar in Korea
Dr. Young Kil Kwag (School of Electronics and Telecomm. Engineering, Korea Aerospace University)

Abstract
Due to the global climate change, natural disasters are continuously threatening us all over the world. Today’s high resolution, polarimetric and interferometric SAR system is the most powerful all-weather sensors for monitoring the earth environment and security territory under the severe weather environments. Korea is now ready for launching the first spaceborne SAR satellite, KOMPSAT-5, soon or later this year. This satellite will be delivered to low Earth orbit for all-weather day-or-night monitoring around Korean peninsula. Though the launching schedule has been delayed by more than two years, this time we expect to see the first beautiful SAR image from space at the time of the APSAR 2013. In this talk, I will briefly look back on the previous APSAR 2011 for the advancement of the APSAR community. And I will give an overview of the SAR program and mission and system characteristics of the KOMPSAT-5. As an application, finally, GOLDEN mission will be introduced such as Geographic information system, Ocean management, Land management, Disaster monitoring, ENvironment monitoring.

Young Kil Kwag is a full professor of the School of Electronics and Telecomm.Eng.,and Director of Radar Research Institute, a Korea Aerospace University (KAU). He was a General Chair of APSAR 2011(www.apsar2011.org) in Seoul, Korea. He was a founding president of the Korea Radar Society of KEES, and also he was a founding chairman of the Korea Aerospace Electronics Society of KSAS. He is currently the chair of IEEE AESS Seoul Chapter. Since 1990, he has been serving as a co-chair, session chair, reviewer and referee of the international radar conference of IEEE/IET, AESS, EUSAR, APSAR. Prior to joining the Korea Aerospace University in 2001, he has been with Agency for Defense Development(ADD), Korea,over 25 years as a division head and project manager of radar/SAR systems and radar signal processing. From 1997 to 1999, he was a joint project manager in Matra Marconi Space (MMS), UK, for the first spaceborne synthetic aperture radar (SAR) system design and development.He was a visiting professor of the Oxford University in UK from Sept. 2007 to Aug. 2008. Since 2013, he has been appointed as a senior member of the aerospace subcommittee in the National Science & Technology Council, Ministry of Science, ICT & Future Planning, Korea. Prof. Kwag received BS from National Aviation University in 1976, MS in electronics engineering from Korea Advanced Institute of Science (KAIST),in 1981, and Ph.D in electrical engineering from Ohio University, Ohio, USA in 1987. His areas of research interest include the radar system design, radar signal processing, synthetic aperture radar imaging, multi-sensor remote sensing, collision avoidance radar, and adaptive array and interference rejection.


TanDEM-X: Operational DEM Generation and Pre-Cursor for Future SAR Missions
Dr. Manfred Zink (Microwave and Radar Institute, German Aerospace Center (DLR), Germany)

Abstract
TanDEM-X, a single-pass SAR interferometer with adjustable baselines in across- and in along-track directions was formed by adding a second, almost identical spacecraft to TerraSAR-X and flying the two satellites in a closely controlled formation. With typical across-track baselines of 150 to 500 m a global Digital Elevation Model with 2 m relative height accuracy at a 12-m posting is being generated. Beyond this primary mission objective, TanDEM-X is also an important pre-cursor for future SAR satellite formations allowing demonstrating novel SAR techniques, with focus on multistatic SAR, polarimetric SAR interferometry, digital beam forming and super resolution.
Flying in a Helix geometry the orbits never cross and the satellites can be arbitrarily shifted along their orbits enabling a safe spacecraft operation. For synchronization a dedicated inter-satellite X-band link has been established via mutual exchange of radar pulses between the two satellites. To mitigate the risk of damage due to illumination of one satellite by the radar of its partner, the transmission of radar signals has to be suppressed at specific arguments of latitude. Precise determination of the interferometric baseline is performed by a double differential evaluation of GPS carrier phase measurements and calibrated using interferometric acquisitions over reference areas. Additional systematic height error sources include uncompensated internal delays in the SAR instruments, the formation of the bistatic replica for both synchronization and bistatic imaging, as well as residual errors in the bistatic SAR processing. TanDEM-X has demonstrated the feasibility of a bistatic interferometric radar mission using satellites in close formation flight and delivers an important contribution for the conception and design of future SAR missions. One example is Tandem-L, a mission proposal for monitoring dynamic processes on the Earth surface with unprecedented accuracy.

Manfred Zink received the Dipl.-Ing. degree in physics from the Technical University of Graz, Austria, in 1987, and the Dr.-Ing. degree from the University of Stuttgart, Germany, in 1993. In 1988, he joined the Microwave and Radar Institute, German Aerospace Center (DLR). He ha pioneered the calibration techniques for both air- and spaceborne SAR sensors. He was the Lead X-SAR Calibration Engineer for both SIR-C/X-SAR missions in 1994 and for the SRTM mission in 2000. In August 2000, he joined the European Space Agency (ESA) and took over the responsibility for the calibration/validation of the ASAR onboard ENVISAT. After successful in-orbit commissioning of the ASAR, he was appointed as the Principal System Engineer for ESA’s TerraSAR-L Program. In May 2005, he returned to DLR’s Microwaves and Radar Institute, where he is currently heading the Satellite SAR Systems Department. He is also managing the TanDEM-X Mission with the primary objective to generate a globally consistent DEM of unprecedented accuracy. Since 1991 he has been an active member of the CEOS Working on Calibration and Validation, SAR Subgroup and since 2011 he has been chairing this group. He received the DLR Science Award in 1991 and the EUSAR Best Paper Award in 2008. In 2012 he and his colleagues were presented with the IEEE W.R.G. Baker Prize Paper Award and have been nominated for the “Deutscher Zukunftspreis” - Federal President’s Prize for Technology and Innovation. He is the general chairman of the European SAR conference (EUSAR) 2014.


System Design of LAPAN-CHIBA Microsatellite
Dr. Robertus Heru Triharjanto (Center for Satellite Technology, Indonesian Institute of Aeronautics and Space (LAPAN), Indonesia)

Abstract
Development of compact and low power consumption synthetic aperture radar (SAR) by Center for Environmental Remote Sensing (CEReS), Chiba University make it feasible to bring such payload in microsatellites. Under collaboration with Center of Satellite Technology, Indonesian Institute of Aeronautics and Space (LAPAN), the concept LAPAN-CHIBA microsatellite is being developed. The mission of the satellite is for land cover mapping, disaster monitoring, Cryosphere monitoring, and oceanographic monitoring. In land cover mapping, the mission is to classify the forest and non-forest area, estimation of tree trunk height, and mangrove area monitoring. The system design of the microsatellite is presented in this paper. The resulted system design shows that the satellite could perform the mission while meeting the dimensional and weight requirement of most auxiliary payload launches. The design also show that the satellite will have sufficient power to operate the payload during its pass in Indonesia and Japan

Robertus Heru Triharjanto received the BS and MS degrees in Aerospace Engineering from North Carolina State University in 1995, and Texas A&M University in 1997, respectively. From 1995 to 1997, he was a research assistant in the Department of Aerospace Engineering, Texas A&M University. He joined the Indonesian Aeronautics and Space Agency (LAPAN) in 1997. He was a design and flight test engineer for LAPAN’s sounding rocket (1998-2003, 2006-2008). From 2004 to 2007, he served as team leader of the LAPAN-TUBSAT assembly, integration and test, and launch campaign team. Since 2009, he has been head of the satellite bus technology division at LAPAN’s center for satellite technology. From 1998 to 2003, he was a Member of National Transportation Safety Committee as lead engineering investigator for several major aircraft accidents in Indonesia. He also received the professional trainings as Boeing 737-300 Airframe and Power plant (Garuda Aviation Training, Jakarta, Indonesia, 2000), Satellite Design (China Academy for Space Technology, Harbin, China, 2000), Aviation Accident Investigation (Institute of Aviation Safety, Stockholm, Sweden, 2001), and System Level Satellite Design (ISRO Satellite Center, Bangalore, India, 2003).


The challenge for still unresolved development of Multi-band Equatorially
Orbiting POLSAR satellite sensors - an integral task for the major space-SAR
technology centers world-wide

Dr. Wolfgang-Martin Boerner (University of Illinois at Chicago, USA)

Abstract
With the relentless increase in population density, the anthropogenic expansion into natural terrestrial hazard zones has become irreversible resulting in ever more catastrophic disasters, not only in the Asia-Pacific region more so within the entire tropical belts engulfing Mother Earth. Thus not only the Indonesian-Pacific Islands, so also South America, Africa and back via the Indian Ocean Islands to Asia-Pacific, these natural events like volcano eruptions, earthquakes with emerging tsunami, cyclones and severe down pours have caused havoc, loss of lives, destruction of infrastructure and above all intentional manmade interference resulting in the deterioration of pristine tropical jungle forests. Matters have become so bad that proposals are forthcoming for equating oil-palm mono-cultures with pristine tropical jungle habitat by greedy developers mostly exterior to local environmental regions suffering helplessly from such criminal machinations. What is required is around-the-clock local and wide-area surveillance and remote sensing of the vegetative cover for which first well designed optical equatorially orbiting satellite sensors had been developed but their successful implementation failed because of the ever increasing cloud, precipitation, humidity and aerosol cover within the entire equatorial belt of +/- 15* ~ 20* latitude rendering penetration at optical wavelength mostly ineffective. Hence, we must take recourse to microwave sensing, and implement radar and synthetic aperture sensors from air and space operational at day & night independent of weather; and the sensors especially suited are the fully polarimetric POL-SAR sensors developed for satellite remote sensing by the major SAR technology development centres worldwide. The challenge is thus to develop equatorially orbiting SAR, preferably POL-SAR satellite sensors within the desirable P/L/S/C/ X/Ka multi-bands, which does pose severe technological problems due to the steep incidence-angle illumination on one hand, and because of the fact that the major SAR Technology Designers reside far outside the equatorial belt not being excited about SAR sensor development for the tropical belt anywhere. Therefore, we need to mobilize and draw full responsible attention of the main SAR Development Centres worldwide such as NASA/JPL, ESA/ESTEC, JAXA/EORC, CSA/SAR, DLR/SAR, DSTO/SAR, ISRO/SAC, INPE/SERE plus NTU-Temasek, NCU-CSRSR, LAPAN/RANCABUNGUR, and so on; joining forces and strongly contributing to a viable multi-band general bi-static (including cross/along)-track POLSAR sensor technology, well suited for equatorial monitoring within orbits of +/- 20* latitude. Once this urgent goal is achieved, local regions could be observed daily up to 12 to 14 times, covering both the land and ocean regions essential for environmental protection and meteorological forecasting, respectively, on a hitherto unprecedented global level. This Plenary Challenge for APSAR-2013 fits well its chosen theme on “Disaster Monitoring and Prevention”, and reaches beyond the Asia-Pacific region in that the hazard phenomena generated within the Equatorial Tropical Belt affect us all worldwide.

Wolfgang-Martin Boerner was born on 1937 July 26 in Finschhafen, Papua-New-Guinea/South-Pacific; he received his Dipl.-Ing. (M.S.E.E.) degree in Communications &Electromagnetic Wave Engineering from the Technische Universität München, Bavaria, Germany in 1963; and his Ph.D. degree in Electromagnetic Engineering Sciences from the Moore School of Electrical Engineering, The University of Pennsylvania, Philadelphia, PA in 1967. From 1967 to 1968 he was a Research Assistant Engineer with the EECS Radiation Laboratory of the University of Michigan, Ann Arbor, MI; and then joined the University of Manitoba at Winnipeg, Canada where he was strongly active in across-Canada research activities on the advancement of inverse problems in aeronomy and radar remote sensing and surveillance. Since 1978, he has been a Professor at the Department of Electrical & Computer Engineering (formerly EECS), the University of Illinois at Chicago, and Director of its Communications, Sensing and Navigation Laboratory. While at UIC Professor Boerner was awarded the Alexander von Humboldt Senior US Scientist, the Japan Society for the Promotion of Science Senior US Scientist, and the US Navy Distinguished Senior Professor awards; he is a University of Illinois Distinguished Senior Professor, and he was awarded the Doctor Honoris Causa (Dr. H. C.) of the Tomsk State University Cluster in Tomsk, West Siberia on 2000 October 12, of the University of Rennes 1, Bretagne, France on 2003 April 04, and of the Friedrich-Alexander-University of Erlangen-Nuremberg, Germany on 2003 April 11 - all in recognition for his profound contributions to the advancements of Electromagnetic Vector Inverse Scattering, Radar Polarimetry, Interferometry and Tomography. He is a Corresponding Member of the Saxonian Academy of Science at Leipzig, Germany and of AKA-TECH of Germany. For his contributions toward linking international research centers of Oceania & East/Austral-Asia via the Americas with Eurasia & Europe, Prof. W-M. Boerner was honored with the distinguished IEEE-GRSS Outstanding Services Award for 2005 and that of IECE-SANE for 2007; and most recently with a Special Recognition on the occasion of the 50th anniversary of IEEE-GRSS during the IGARSS-2012 at Munich, Germany for “his extraordinary technical contributions to the advancement of radar remote sensing and valued services to the Geoscience and Remote Sensing Society of IEEE”.