搜索结果: 136-150 共查到“SAR”相关记录1384条 . 查询时间(0.062 秒)
前视阵列SAR回波稀疏采样及其三维成像方法
三维成像 前视阵列SAR 稀疏采样 压缩感知成像
2017/1/16
针对高分辨前视阵列SAR三维成像系统面临的距离采样率高和回波数据量大的问题，本文利用地面散射源在三维空间中的稀疏性，提出距离频域和沿航向时域二维稀疏采样并稀疏重构地面三维图像的方法.从前视阵列SAR角度观察三维地面，地面散射源在距离向和沿航向二维空间中是稀疏的，在该二维方向上联合稀疏采样有望实现最佳的稀疏采样效果.为避免距离向时域稀疏采样造成的三维成像复杂化，提出利用子脉冲结合距离频域稀疏采样的方...
AN A MDO TIBETAN PASTORALIST FAMILY'S LO SAR IN STONG SKOR VILLAGE
Lo sar Mang ra pastoral life social and cultural change
2016/1/26
This paper describes a single family's preparations and celebrations for the 2010 Tibetan Lo sar 'New Year' in Stong skor Village, Mang ra County, Mtsho lho Tibetan Autonomous Prefecture, Qinghai Prov...
Accuracy Assessment of Building Height Estimation from a High Resolution Optical Image Combined with a Simulated SAR Image
Recognition SAR High resolution Fusion Reconstruction Urban Simulation TerraSAR-X
2016/1/25
Modern space borne SAR sensors like TerraSAR-X and COSMO-SkyMed are capable of acquiring images with a geometric ground
resolution of one meter. Airborne sensors achieve even higher ground resolutio...
Interferometric monitoring of an active underground mining field with high-resolution SAR sensors
Radar SAR Interferometry GIS Monitoring Surface High resolution Accuracy Analysis Terrain Motion
2016/1/25
Underground mining activities lead to ground movements at the earth surface. An area-wide monitoring and the documentation of mining induced influences are required by the mining authorities. Work don...
Registration of Unrectified Optical and SAR imagery over Mountainous Areas through Automatic Free-form Features Global Matching
Automation Matching Registration Algorithms SAR Optical TerraSAR-X
2016/1/25
An algorithm, for automatic global matching of heterogeneous free-form features (natural features) between the 3dimensional
object space and the 2dimensional image space, taking into account the non-...
Registration of High Resolution SAR and Optical Satellite Imagery in Urban Areas
region growing urban area extraction mutual information normalized cross correlation image registration disaster mitigation
2016/1/25
With the launch of high resolution remote sensing satellites in different modalities like TerraSAR-X, WorldView-1 and Ikonos, the
contribution of remote sensing for various applications has received...
Automatic Ship Detection in Space-borne SAR Imagery
Ship Detecction Space-borne SAR ALOS-PALSAR RADARSAT-1
2016/1/25
Synthetic aperture radar (SAR) imagery has proven to be a promising data source for the surveillance of maritime activity, and its
application for automatic ship detection has been the focus of many...
Analyzing TerraSAR-X and COSMO-Skymed High-resolution SAR Data of Urban Areas
SAR high-resolution urban area InSAR Persistent Scatterer Interferometry
2016/1/25
The new high-resolution synthetic aperture radar (SAR) satellite systems offer new possibilities for urban remote sensing. COSMO-SkyMed and TerraSAR-X operate in X-band and both can deliver data with ...
Analysis of DEM Combination Methods using High Resolution Optical Stereo Imagery and Interferometric SAR Data
DEM/DTM High resolution Combination Fusion Accuracy Multisensor Optical SAR
2016/1/25
Digital elevation models (DEM) from satellite data are generated mainly from two types of datasets using completely different
methods: photogrammetry for optical stereo images (e.g. SPOT5, CARTOSAT)...
Classification of Polarimetric SAR Data by Complex Valued Neural Networks
PolSAR classification machine learning complex valued neural networks
2016/1/25
In the last decades it often has been shown that Multilayer Perceptrons (MLPs) are powerful function approximators. They were
successfully applied to a lot of different classification problems. Howev...
喀斯特地区复杂地表形态导致地面调查可深入性差、精度不高，遥感则作为该区有效监测与研究 人类活动对土地利用（LUCC）方式与利用程度影响的主要手段。文章利用ALOS多光谱数据与TerraSAR- X的数据进行融合，讨论了HH极化微波后向散射数据用于改善多光谱遥感数据LUCC分类的精度，并比 较了不同融合方法对地物识别。结果表明: 2种数据之间的融合充分利用了多光谱的光谱信息与HH极化数 据丰富的结构...
一种适用于大场景圆迹环扫SAR的改进CS成像算法
圆迹环扫ＳＡＲ 距离徙动 二维频谱 线性调频变标
2016/3/2
在宽测绘带圆迹环扫合成孔径雷达（ＣＳＳＡＲ）中，目标斜距表示形式复杂，测绘带内距离徙动（ＲＣＭ）
变化剧烈均给成像处理引入难点。针对上述问题，根据圆迹环扫ＳＡＲ平台的运动特性，使用高阶逼近的方法建立
圆弧曲线模型下的回波信号斜距方程，并以导出的二维频谱高阶近似解析表达式为基础，考虑大场景下的距离徙
动空变问题，对空变的斜距历程进行详细的分析，并提出了一种适用于大场景圆迹环扫ＳＡＲ的改进线性调...
一种多普勒域走动校正的斜视SAR成像算法
合成孔径雷达 线性调频变标 斜视成像
2016/3/2
为了解决时域校正走动带来的方位空变性问题，提出了一种在方位多普勒域走动校正的斜视合成孔
径雷达（ＳＡＲ）成像算法。文中利用级数反演理论，将斜距公式展开至三次项，推导出ＳＡＲ回波信号的两维频谱表
达式。再从两维频谱出发，提出了基于两维频谱匹配滤波的斜视ＳＡＲ成像算法。该算法考虑到距离空变性问题，
提出先在两维频域进行走动校正和相位预滤波，接着在距离多普勒域进行线性频率变标的处理方法，经过距离脉...
DECISION FUSION FOR THE UNSUPERVISED CHANGE DETECTION OF MULTITEMPORAL SAR
SAR Unsupervised change detection Information fusion Fuzzy sets theory
2016/1/3
The unsupervised change detection of multitemporal SAR usually can get different results through different threshold selection algorithms. It is hard to determine what kinds of results are the best. I...
CHANGE MECHANISM ANALYSIS AND INTEGRATION CHANGE DETECTION METHOD ON SAR IMAGES
SAR Image Change Mechanism Integration Change Detection Method Change Type Grey Difference Method Correlation Coefficient Method Texture Feature Difference Method
2016/1/3
Synthetic aperture radar (SAR) image change detection is a very complex problem like SAR imaging mechanism. Every change detection method has its advantage and disadvantage, and there are no optimal c...