Results 191 to 200 of about 4,808 (217)

Detection and mitigation of ionospheric stripes in PALSAR data

2012 IEEE International Geoscience and Remote Sensing Symposium, 2012
Due to its lower frequency, the ALOS PALSAR L-Band synthetic aperture radar (SAR) is more susceptible to ionospheric effects than the higher frequency C-Band (e.g., RADARSAT-2 and Envisat ASAR) and X-Band (e.g., TerraSAR-X and COSMO- SkyMED) space-based SAR systems.
A. Philip Roth, Barton D. Huxtable, Kancham Chotoo, Susan D. Chotoo, Ronald G. Caton   +4 more
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The annual behavior of backscattering and coherence of PALSAR data

2011 IEEE International Geoscience and Remote Sensing Symposium, 2011
Forest biomass is important information for the forest management and the studies of global changes. Researches showed that SAR data is superior in the estimation of forest biomass. However the backscattering coefficients are not the direct measurements of forest biomass. It can be affected by forest canopy spatial structures.
Wenjian Ni, Zhifeng Guo, Zhiyu Zhang 0001, Guoqing Sun   +3 more
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Study of environmental issues with ALOS PALSAR data

IEEE International Geoscience and Remote Sensing Symposium, 2003
The Advanced Land Observing Satellite (ALOS) will carry three advanced sensors for addressing many environmental issues, such as vegetation change, water resource management, disaster and earthquake mitigation, and cryosphere monitoring, in a broad range of earth science disciplines.
Huadong Guo, Changlin Wang
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Development of a retrodirective PARC for ALOS/PALSAR calibration

IEEE International Geoscience and Remote Sensing Symposium, 2003
A novel PARC of Van Atta array design is developed for polarimetric calibration of PALSAR onboard the ALOS satellite. The PARC consists of four dual-polaraized 3/spl times/3-cross-dipole subarrays. The Van Atta array configuration combining with dual-polarized nature of the subarrays provides the PARC the depolarizing and retrodirective characteristics
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PALSAR initial calibration and validation results

SPIE Proceedings, 2006
This paper summarizes the initial PALSAR calibration and validation results, which were being carried out after the first activation of the PALSAR image on Feb. 15 2006. The PALSAR calibration and validation consists of the sensor characterization, SAR processor tuning, and image quality evaluation.
Masanobu Shimada, Norimasa Itoh, Manabu Watanabe, Toshifumi Moriyama, Takeo Tadono   +4 more
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Mangrove monitoring with PALSAR mosaic products

SPIE Proceedings, 2011
Global change research requires high spatial, multi-scale, and consistent remote sensing data. Advanced land observing Satellite (ALOS) implemented a systematic data observation program, providing free polarimetric Phased Array L-band Synthetic Aperture Radar (PALSAR) mosaics to support global change research.
Long Ma, Guan-wen Chen, Guo-xin Lan
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Design and implementation of PALSAR Ground Data System at ERSDAC

2006 IEEE International Symposium on Geoscience and Remote Sensing, 2006
The Phased Array type L-band Synthetic Aperture Radar (PALSAR) is one of the imaging sensors onboard the Advanced Land Observing Satellite (ALOS) launched on January 24, 2006. The antenna of PALSAR is beam steerable to realize a variety of off-nadir angles. There are multi-polarimetric (dual and quad) observation modes and single polarimetric modes. It
M. Takeda, A. Otsubo, H. Ota, K. Mouri, M. Kumai, H. Watanabe, H. Tsu   +6 more
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A preliminary study on deforestation monitoring in Sumatra Island by PALSAR

2009 IEEE International Geoscience and Remote Sensing Symposium, 2009
An L-band normalized radar cross section (NRCS) characteristic derived from the Phased Array L-band Synthetic Aperture Radar (PALSAR) 50-m resolution dual-polarization mosaic and the land cover database in Riau province, Sumatra Island, represent that HV signals of natural forests are 2–3 dB larger than those of cleared and many plantations, indicating
Osamu Isoguchi, Masanobu Shimada, Yumiko Uryu   +2 more
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The PALSAR Polarimetric Mode for Sea Oil Slick Observation

IEEE Transactions on Geoscience and Remote Sensing, 2009
A study on sea oil slick observation by means of L-band polarimetric synthetic aperture radar (SAR) data is accomplished. It is based on different sea surface scattering mechanism expected with and without surface slicks. Polarimetric measurements are processed by means of a simple and very effective filtering technique which is electromagnetically ...
MIGLIACCIO, Maurizio, GAMBARDELLA A, NUNZIATA, FERDINANDO, SHIMADA M, ISOGUCHI O.   +4 more
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PALSAR-2 initial mission check

2014 IEEE Geoscience and Remote Sensing Symposium, 2014
Yuya Yokota, Yuji Okada, Shohei Nakamura, Koichi Iribe, Masao Tsuji, Kenichi Hariu, Yukihiro Kankaku, Shinichi Suzuki, Masanobu Shimada   +8 more
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