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Title Transcription
コウ ブンカイノウ コウクウキ トウサイ ゴウセイ カイコウ レーダ ニヨル キスイイキ カンソク ショキ カイセキ ケッカ
Title Alternative (English)
High-resolution Airborne SAR Observation of a Coastal Lagoon Environment : Preliminary Results
File
language
jpn
Author
Kozu, Toshiaki
Ikeuchi, Nobuyuki
Ichikawa, Keisuke
Sakuno, Yuji
Nakayama, Daisuke
Takayasu, Katsumi
Description
High-resolution airborne SAR observations were conducted over Lakes Shinji and Nakaumi area in 2001 and 2002 using the CRL/NASDA's pi-SAR that has the capability for a simultaneous dualfrequency(L-band and X-band) and multi-polarization observation. Coupled with the pi-SAR survey, extensive in situ field measurement were also made in order to detailed analyses of pi-SAR images and back-scattering coefficients(σ^0). The preliminary analyse revealed that the SAR images L- and X-bands have somewhat different signatures suggesting that the X-band backscatter rapidly responds to fine structure of atmospheric turbulence as well as average wind field. Flow-like dark signatures are also found, suggesting the capabilities of SAR in detecting the surface slick and water flow patterns. Incidence angle, frequency and polarization dependences of σ^0 obtained from the pi-SAR are also studied. The results indicate the potential of the SAR for high-resolution wind field mapping as well as the necessity of more detailed studies of wind-water surface interactions and surface wave spectra in coastal lagoon areas where water bodies are small and surrounded by land.
Subject
airborne sensor
Synthetic Aperture Radar(SAR)
coastal lagoon
normalized radar cross-section
Journal Title
Laguna : 汽水域研究
Volume
10
Start Page
73
End Page
86
ISSN
21852995
Published Date
2003-03
NCID
AN10439529
Publisher
島根大学汽水域研究センター
NII Type
Departmental Bulletin Paper
Format
PDF
Text Version
出版社版
OAI-PMH Set
Estuary Research Center