SIMULATION STUDY ON THE EFFECT OF SAND DIGGING AND HEAPING ON SAR IMAGING IN THE PEARL RIVER ESTUARY

SIMULATION STUDY ON THE EFFECT OF SAND DIGGING AND HEAPING ON SAR IMAGING IN THE PEARL RIVER ESTUARY

There are frequent sand digging and heaping activities in shoal in the Pearl River Estuary (PRE). Water depth has changed in patches, which can be imaged by synthetic aperture radar (SAR). According to SAR imaging mechanism of underwater bathymetry, a 3-D hydrodynamic model is used to demonstrate th...

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Main Authors: X. Wang, H. Zhang, B. Fu, W. Guan, A. Shi
Format: Article
Language:English
Published: Copernicus Publications 2013-07-01
Series:The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Online Access:http://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XL-7-W1/115/2013/isprsarchives-XL-7-W1-115-2013.pdf
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spelling doaj-b3ec6915c57f4f8ab2135129cedc1c532020-11-25T00:05:20ZengCopernicus PublicationsThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences1682-17502194-90342013-07-01XL-7/W111511910.5194/isprsarchives-XL-7-W1-115-2013SIMULATION STUDY ON THE EFFECT OF SAND DIGGING AND HEAPING ON SAR IMAGING IN THE PEARL RIVER ESTUARYX. Wang0H. Zhang1B. Fu2W. Guan3A. Shi4State Key Laboratory of Satellite Ocean Environment Dynamic, Second Institute of Oceanography, State Oceanic Administration, Hangzhou,310012,ChinaState Key Laboratory of Satellite Ocean Environment Dynamic, Second Institute of Oceanography, State Oceanic Administration, Hangzhou,310012,ChinaState Key Laboratory of Satellite Ocean Environment Dynamic, Second Institute of Oceanography, State Oceanic Administration, Hangzhou,310012,ChinaState Key Laboratory of Satellite Ocean Environment Dynamic, Second Institute of Oceanography, State Oceanic Administration, Hangzhou,310012,ChinaState Key Laboratory of Satellite Ocean Environment Dynamic, Second Institute of Oceanography, State Oceanic Administration, Hangzhou,310012,ChinaThere are frequent sand digging and heaping activities in shoal in the Pearl River Estuary (PRE). Water depth has changed in patches, which can be imaged by synthetic aperture radar (SAR). According to SAR imaging mechanism of underwater bathymetry, a 3-D hydrodynamic model is used to demonstrate the temporal variations of the shoal topography changes due to sand digging and heaping. A microwave radar imaging of oceanic surface’s program is used to simulate the variation of normalized radar cross section (NRCS) induced by the ocean surface current. The simulation is carried out to study the digging-heaping shape, water depth changes on SAR imaging of shoal bathymetry. Results indicate several points as followings. 1. Circle-shaped sand digging and heaping are imaged clearer by SAR than other shapes. 2. Sand heaping has a greater effect on SAR imaging than sand digging. 3. Bigger depth change induces bigger NRCS variation.http://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XL-7-W1/115/2013/isprsarchives-XL-7-W1-115-2013.pdf
collection DOAJ
language English
format Article
sources DOAJ
author X. Wang
H. Zhang
B. Fu
W. Guan
A. Shi
spellingShingle X. Wang
H. Zhang
B. Fu
W. Guan
A. Shi
SIMULATION STUDY ON THE EFFECT OF SAND DIGGING AND HEAPING ON SAR IMAGING IN THE PEARL RIVER ESTUARY
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
author_facet X. Wang
H. Zhang
B. Fu
W. Guan
A. Shi
author_sort X. Wang
title SIMULATION STUDY ON THE EFFECT OF SAND DIGGING AND HEAPING ON SAR IMAGING IN THE PEARL RIVER ESTUARY
title_short SIMULATION STUDY ON THE EFFECT OF SAND DIGGING AND HEAPING ON SAR IMAGING IN THE PEARL RIVER ESTUARY
title_full SIMULATION STUDY ON THE EFFECT OF SAND DIGGING AND HEAPING ON SAR IMAGING IN THE PEARL RIVER ESTUARY
title_fullStr SIMULATION STUDY ON THE EFFECT OF SAND DIGGING AND HEAPING ON SAR IMAGING IN THE PEARL RIVER ESTUARY
title_full_unstemmed SIMULATION STUDY ON THE EFFECT OF SAND DIGGING AND HEAPING ON SAR IMAGING IN THE PEARL RIVER ESTUARY
title_sort simulation study on the effect of sand digging and heaping on sar imaging in the pearl river estuary
publisher Copernicus Publications
series The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
issn 1682-1750
2194-9034
publishDate 2013-07-01
description There are frequent sand digging and heaping activities in shoal in the Pearl River Estuary (PRE). Water depth has changed in patches, which can be imaged by synthetic aperture radar (SAR). According to SAR imaging mechanism of underwater bathymetry, a 3-D hydrodynamic model is used to demonstrate the temporal variations of the shoal topography changes due to sand digging and heaping. A microwave radar imaging of oceanic surface’s program is used to simulate the variation of normalized radar cross section (NRCS) induced by the ocean surface current. The simulation is carried out to study the digging-heaping shape, water depth changes on SAR imaging of shoal bathymetry. Results indicate several points as followings. 1. Circle-shaped sand digging and heaping are imaged clearer by SAR than other shapes. 2. Sand heaping has a greater effect on SAR imaging than sand digging. 3. Bigger depth change induces bigger NRCS variation.
url http://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XL-7-W1/115/2013/isprsarchives-XL-7-W1-115-2013.pdf
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AT hzhang simulationstudyontheeffectofsanddiggingandheapingonsarimaginginthepearlriverestuary
AT bfu simulationstudyontheeffectofsanddiggingandheapingonsarimaginginthepearlriverestuary
AT wguan simulationstudyontheeffectofsanddiggingandheapingonsarimaginginthepearlriverestuary
AT ashi simulationstudyontheeffectofsanddiggingandheapingonsarimaginginthepearlriverestuary
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