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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...
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)...
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...
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...
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...
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...
TanDEM-X is a SAR mission with the goal to acquire a global digital elevation model of the Earth with an up to now unprecedented accuracy. This paper gives an overview on the actual status of the TanDEM-X mission in terms of acquisition strategy and planning of the third year of operation. The dedicated phases for the acquisition of Antarctica as well as for difficult terrain regions with shadow or...
This paper discusses the optimization conducted during the definition and implementation of the operational TerraSAR-X Staring Spotlight (ST) mode. The focus is on an optimum Pulse Repetition Frequency (PRF) selection based on ambiguity and timing considerations. Both parameters will determine the product scene size and recommended incidence angle range. An extensive simulation of acquisition parameters...
This paper presents an overview of the TerraSAR-X Next Generation mission that will ensure the TerraSAR-X data and service continuity. The benefits of the new mission to the SAR user community will be the mission's focus on the high demand of Very High Resolution (VHR) products with improved performance and large area SAR products for monitoring applications. The presented current mission status complements...
This paper introduces the technology development of Astrium GmbH Friedrichshafen Germany in the framework of next generation SAR preparation. The new technology Focusing on the C- and X-band. The new technology contributes to the improvement of system sensitivity and efficiency. Thereby, the imaging capability of the future SAR instrument is upgraded. This paper summarizes the new technology and highlights...
For many Asian countries, a rice crop monitoring plays a key role to realize stable food supply. Because of its flexible operability with wide swath, SAR remote sensing has been attractive as an efficient monitoring tool. In this paper, we simulate and understand the backscattering cross sections from rice paddy in terms of polarization orientation angles. Firstly, radar backscatter from rice paddy...
Snow wetness is an important parameter for forecasting of snow avalanche and snow melt run off modeling in cragged areas specifically Himalayan region of India. In this paper a new snow wetness estimation approach is used for fully polarimetric Synthetic Aperture Radar (SAR) data. In this new methodology Freeman surface scattering and Cloude volume scattering components are introduced, which account...
In this paper, an advanced version of the hybrid Freeman/eigenvalue decomposition technique for land parameter extraction is presented, denoted as G3H. It is shown that vegetation areas and oriented objects such as urban building areas are well discriminated by the proposed technique as compared to the existing Cloude hybrid decomposition technique, denoted as F3Hc
Synthetic Aperture Radar (SAR) is well-known as a multi-purpose sensor in all-weather and day-night time. In this research, we are developing Circularly Polarized Synthetic Aperture Radar (CP-SAR) onboard microsatellite under Japanese Ministry of Education and Technology (MEXT) program to observe land deformation on Earth surface etc. The CP-SAR employs elliptical wave propagation and scattering phenomenon...
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