搜索结果: 106-120 共查到“知识库 雷达工程”相关记录1912条 . 查询时间(2.953 秒)
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
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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...
圆迹合成孔径雷达星载实现的可行性分析
圆迹合成孔径雷达 轨道动力学 星载实现 基点法
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2016/4/18
圆迹合成孔径雷达(circular synthetic apertureradar,CSAR)是一种通过传感器平台作360°圆周运动来获得全方位高空间分辨率的聚束合成孔径雷达,本文通过对其星载平台进行动力学分析来研究其星载的可行性.首先以CSAR的工作条件作为约束,建立了星载平台轨道模型.然后以圆迹中心为基点,分析了星载平台的运动状态及受力情况,最终得到形成圆迹平台所需要的主动控制力.研究结果表明...
Extraction of 3D Straight Lines Using LIDAR Data and Aerial Images
Building Edge Extraction Feature LIDAR Reconstruction
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2015/12/18
Light Detection and Ranging (LIDAR) is a technology used for collecting topographic data. Nowadays there are diverse application areas of LIDAR data that include DTM generation and building extraction...
Digital Elevation Models of Great Wall by a Combination of Airborne and Terrestrial LIDAR
Lidar DEM Photogrammetry Scanner Accuracy GPS
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2015/12/18
The Great Wall is one of the biggest man-made wonders of the world! The wall consists of bricks made by different dynasties and built on thousands of kilometers of steep mountain terrain. It has many ...
Research on Analyze Accuracy of LIDAR Data in Surveying Projects
LiDAR Surveying Analysis DEM/DTM Accuracy Test
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2015/12/17
There are over 10 sets of LiDAR system into China until end of 2007, but they did not in full of working. One reason is big capacity of the market need a long period time. Another is author of this ar...
Change Detection for Topographic Mapping Using Three Dimensional Data Structures
Change Detection Point Clouds Lidar Photogrammetry Topographic Mapping
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2015/12/17
Identifying significant changes to our urban areas is a prerequisite for accurate topographic mapping. This paper presents an approach based on octree data structures to identify change between two se...
Voxel Approach to Landscape Modelling
Voxel Model Airborne Laser Scanning Intensity Resolution
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2015/12/16
In this paper, we present a method for 3D volumetric reconstruction of landscape from airborne laser scanner data. The method applies a voxel model, where volume is divided to sub-volume particles, vo...
Automatic Building Detection from LIDAR Point Cloud Data
Building Detection LIDAR DSM DTM Normalized DSM
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2015/12/16
This paper proposes an automatic system which detects buildings in urban and rural areas by the use of first pulse return and last pulse return LIDAR data. Initially both first and last pulse return p...
Automatic Generation of Digital Building Models for Complex Structures from LIDAR Data
LiDAR Ground/non-ground Separation Building Hypotheses
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2015/12/16
Automated and reliable 3D reconstruction of man-made structures is important for various applications in virtual reality, city modeling, military training, etc. This paper is concerned with the automa...
Automatic Classification of LIDAR Data into Ground and Non-Ground Points
LiDAR DEM/DTM Extraction Photogrammetry Classification Laser Scanning Point Cloud
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2015/12/16
Recently, automatic object extraction from Light Detection And Ranging (LiDAR) data has attracted great attention. The level of detail and the quality of the collected point cloud motivated the resear...
Intensity Normalization by Incidence Angle and Range of Full-Waveform LIDAR Data
Laser Data Full-Waveform Point Clouds Intensity
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2015/12/16
The analysis of LIDAR data to extract surface features is of great interest in photogrammetric research. Our investigations show that the same material of a surfaces (e.g. gabled roof) yields to diffe...
Extraction of Buildings and Trees Using Images and LIDAR Data
DTMs/DSMs Lidar Data Processing Multispectral Classification Image Matching
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2015/12/16
The automatic detection and 3D modeling of objects at airports is an important issue for the EU FP6 project PEGASE. PEGASE is a feasibility study of a new 24/7 navigation system, which could either re...
LIDAR Applications in the Electrical Power Industry
Lidar Route Design Optimization Powerline Checking Asset Management
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2015/12/11
For the moment the total length of Chinese powerline is at the second place of the whole world. During the Eleventh Five-Year Plan the government will enhance the construction of power grid to supply ...
Fusion of Hyperspectral Images and LIDAR-Based DEMs for Coastal Mapping
LIDAR Hyperspectral Rectification Classification Image processing
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2015/12/9
Coastal mapping is essential for a number of applications such as coastal resource management, coastal environmental protection, and coastal development and planning. Coastal mapping has been carried ...
Building Boundary Extraction from High Resolution Imagery and LIDAR Data
Building boundary High resolution image Lidar data Data integration
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2015/12/9
Building boundary data are necessary for the real estate industry, 3D city models and many other applications. In this study, a novel approach integrated high resolution imagery and Lidar data is prop...