搜索结果: 121-135 共查到“测绘科学技术 SAR”相关记录354条 . 查询时间(0.227 秒)
Road Extraction from SAR Image Using an Improved Statistical Algorithm
Road extraction Feature extraction SAR image Speckle statistics Phase grouping
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2015/12/9
An efficient statistical algorithm of automatic extracting road from SAR images is devised in this paper. First, an feature detecting operator is used to find the road candidate. Then another smaller ...
Visualization of Space-borne Synthetic Aperture Radar (SAR) Doppler Parameter Estimation and Its Application in Topographic Surveying and Mapping
Remote Sensing SAR Image Correction Geodesy Application
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2015/12/2
Synthetic Aperture Radar (SAR) image is not easy to interpretation because of its image unique characters, and there is a close relationship between the Doppler parameter and the quality of SAR image,...
Optical/SAR Sensors Stereo Positioning
Accuracy Mapping Orientation Optical Photogrammetry Stereoscopic SAR
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2015/11/23
Up till now it is still difficult to acquire stereoscopic space-borne image pairs of some area due to climate condition or atmosphere pollution. This paper describes the geometric aspects and the math...
Application of GPS in Distributed SAR Satellite
Distributed SAR Satellite DEM GPS INSAR GMTI Baseline Estimation
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2015/11/20
In this paper, we proposed a new Distributed SAR Satellite(DSS) using one passive satellite with a dual receive antenna(DRA) flying in formation with an already existing conventional SAR satellite. Su...
Multi-photo Combined Adjustment with Airborne SAR Images Based on F.leberl Ortho-rectification Model
Airborne SAR F.Leberl Model Ortho-rectification GCPs Pass Points Multi-photo Combined Adjustment
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2015/11/20
This paper introduces an ortho-rectification method of airborne SAR images which is multi-photo combined adjustment method based on F.Leberl imaging model. Multi-photo combined adjustment model of air...
Analyzing on Pixel Positioning Accuracy of SAR Images Based On R-D Location Model
SAR Image Targets Pixel Error Analysis
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2015/11/20
The range-Doppler (R-D) model, which requires no reference points and is independent of satellite attitude knowledge and control, is used to determine the location of SAR images. However, its error ha...
Monitoring of Recent Land Subsidence and Ground Fissures in Xi'an With SAR Interferometry
Land subsidence Ground fissure Differential InSAR Monitoring
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2015/11/20
The City of Xian, China, has been experiencing significant land subsidence and ground fissure activities since 1960s that have brought various severe geohazards including damages to buildings, bridges...
DEM Registration, Alignment and Evaluation for SAR Interferometry
DEM Accuracy assessment SAR Interferometry Digital elevation models Registration
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2015/11/20
To generate an accurate digital elevation model (DEM), Interferometric Synthetic Aperture Radar (InSAR) requires precise orbit data and baseline information, which are not always available. An alterna...
CLASSIFICATION OF POLARIMETRIC SAR IMAGES BASED ON SCATTERING MECHANISMS
Classification polarimetry decomposition Pauli polarimetric response scattering
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2015/9/28
Polarimetric classification is one of the most significant applications of polarimetric radar in remote sensing. During the last decade, several research tasks revealed the contribution of polarimetri...
IMAGE ANALYSIS OF FUSED SAR AND OPTICAL IMAGES DEPLOYING OPEN SOURCE SOFTWARE LIBRARY OTB
space resources satellite imagery image fusion open source software library feature extraction
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2015/9/17
Within recent years, a variety of new high resolution airborne and spaceborne sensors have been put into place. These sensors are either active (SAR) or passive (optical). Further systems will be laun...
MEASUREMENT OF SURFACE DISPLACEMENT CAUSED BY UNDERGROUND NUCLEAR EXPLOSIONS BY DIFFERENTIAL SAR INTERFEROMETRY
Differential SAR Interferometry Underground Nuclear Test Nevada Test Site Surface Deformation Monitoring CTBT
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2015/9/17
Differential synthetic aperture radar Interferometry (DInSAR) has nowadays become an important means for measuring and monitoring of surface displacements of various types. This paper focuses on inves...
TOMOGRAPHIC SAR IMAGING OF A FORESTED AREA BY TIME-DOMAIN BACK-PROJECTION
SAR multi-baseline SAR tomography
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2015/9/8
Recently, various attempts have been undertaken to retrieve information about the three-dimensional structure of vegetation from multibaseline
synthetic aperture radar data. Although tomographic proc...
evaluation of the potential of sar ers and asar envisat sensors in multi-incidence and multi-polarisation modes for landscape study in french guyana: examples of kourou and saint laurent du maroni
Calibration Comparison Polarization Landscape Radar SAR
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2015/9/1
This study aims to assess the contribution of ENVISAT ASAR data for the monitoring of the littoral plains of Kourou and Saint Laurent du Maroni (French Guyana).
interest of fully polarimetric sar data for classification and land use cartography
polarimetry land use svm classifi cation
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2015/9/1
French Polynesia islands are located at the middle of the South Pacific Ocean. They are thus subject to a strong environmental planning leading to landscape changes as well as to the introductio...
PERFORMANCE ANALYSIS OF SPACEBORNE SAR VEHICLE DETECTION AND VELOCITY ESTIMATION
Traffic Monitoring SAR Satellite Images
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2015/8/31
With TerraSAR-X and RADARSAT-2, two dual-channel SAR satellites will be launched in the next months. Both sensors allow for detecting moving objects, and, by this, enable traffic monitoring from space...