搜索结果: 1-8 共查到“航空、航天科学技术 DEM”相关记录8条 . 查询时间(0.225 秒)
AN INTERFEROMETRIC PROCESSING METHOD TO MAINTAIN BOTH ACCURACY AND RESOLUTION OF DEM USING GAOFEN-3 SAR DATA
Gaofen-3, TanDEM-X, DEM, multi-look
2018/5/14
Gaofen-3 (GF-3) is the only in-orbit SAR satellite of China civilian fields. It is designed especially for ocean observation but not for interferometric applications. However, during the past one and ...
AN IMPROVED DEM CONSTRUCTION METHOD FOR MUDFLATS BASED ON BJ-1 SMALL SATELLITE IMAGES: A CASE STUDY ON BOHAI BAY
Mudflats BJ-1 image Waterline detection method Tidal grid model DEM
2018/5/15
The topographic measurement of muddy tidal flat is restricted by the difficulty of access to the complex, wide-range and dynamic tidal conditions. Then the waterline detection method (WDM) has the pot...
PRELIMINARY GAOFEN-3 INSAR DEM ACCURACY ANALYSIS
GF-3 satellite, error analysis, calibration, digital elevation model, precision validation
2018/5/11
GF-3 satellite, the first C band and full-polarization SAR satellite of China with spatial resolution of 1 m, was successfully launched in August 2016. We analyze the error sources of GF-3 satel...
a three dimensional dominant scatterer map extends the dem information in urban areas
Urban DEM InSAR Permanent Scatterer Persistent Scatterer Interferometry
2015/9/1
The generation of digital elevation models (DEMs) by space-born InSAR is a well-established remote sensing technique. Several application projects as for instance the shuttle radar topography mission ...
GENERATION OF DEM AND ORTHOIMAGES FROM SPOT HRS STEREO DATA WITHOUT USING GCP
SPOT HRS direct georeferencing orthoimages
2015/8/17
The High Resolution Stereo (HRS) Scientific Assessment Program offered by the French space agency CNES and
ISPRS, provided data sets from the SPOT stereo camera system (HRS) together with high preci...
采用海量数字高程模型（DEM）数据的地景模型在军事与民用领域具有非常重要的作用，其快速绘制问题是三维真实地形信息可视化的一个关键问题。提出了动态数据子块的概念，通过经纬度和飞行参数索引快速实现数据子块的装载，再通过有效数据组织和改进四叉树方法实现地形快速绘制。新算法在嵌入式环境中实现了海量DEM数据的实时绘制，而且画面流畅，无滞后现象。
采用海量数字高程模型（DEM）数据的地景模型在军事与民用领域具有非常重要的作用，其快速绘制问题是三维真实地形信息可视化的一个关键问题。提出了动态数据子块的概念，通过经纬度和飞行参数索引快速实现数据子块的装载，再通过有效数据组织和改进四叉树方法实现地形快速绘制。新算法在嵌入式环境中实现了海量DEM数据的实时绘制，而且画面流畅，无滞后现象。
COMBINING HIGH RESOLUTION SATELLITE IMAGERY AND AIRBORNE LASER SCANNING DATA FOR GENERATING BARELAND DEM IN URBAN AREAS
Airborne Laser Scanning IKONOS
2015/3/9
This paper proposes a framework for generating bare-land Digital Elevation Model (DEM) in urban areas by combining highresolution satellite imagery and Airborne Laser Scanning (ALS) data. Airborne las...