搜索结果: 1-13 共查到“航天器结构与设计 Method”相关记录13条 . 查询时间(0.423 秒)
ROAD NETWORK IDENTIFICATION AND EXTRACTION IN SATELLITE IMAGERY USING OTSU'S METHOD AND CONNECTED COMPONENT ANALYSIS
Road identification road extraction Otsu's method connected component analysis morphological operations
2019/2/27
As the high resolution satellite images have become easily available, this has motivated researchers for searching advanced methods for object detection and extraction from satellite images. Roads are...
IMAGE QUALITY ASSESSMENT OF HIGH-RESOLUTION SATELLITE IMAGES WITH MTF-BASED FUZZY COMPREHENSIVE EVALUATION METHOD
Image Quality Assessment High-resolution Satellite Images MTF Fuzzy Comprehensive Evaluation
2018/5/15
A Modulation Transfer Function (MTF)-based fuzzy comprehensive evaluation method was proposed in this paper for the purpose of evaluating high-resolution satellite image quality. To establish the fact...
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...
STUDY ON MOSAIC AND UNIFORM COLOR METHOD OF SATELLITE IMAGE FUSION IN LARGE SREA
Large area Multi-temporal Satellite image mosaic Automatic uniform color
2018/5/15
Due to the improvement of satellite radiometric resolution and the color difference for multi-temporal satellite remote sensing images and the large amount of satellite image data, how to complete the...
A High-Order Spectral Difference Method for the Navier-Stokes Equations on Unstructured Moving Deformable Grids
High-Order Spectral Diff erence Method Navier-Stokes Equations Unstructured Moving Deformable Grids
2015/7/3
In this paper the high-order accurate spectral difference method for the Navier-Stokes equations is applied to moving boundary problems. Boundary movements are achieved,firstly, through ri...
A continuous adjoint method for unstructured grids
continuous adjoint method unstructured grids
2015/7/2
Adjoint based shape optimization methods have proven to be computationally efficient for aerodynamic problems. The majority of the studies on adjoint methods have used structured grids to discret...
Sonic Boom Reduction using an Adjoint Method for Supersonic Transport Aircraft Configurations
Sonic Boom Reduction Adjoint Method Supersonic Transport Aircraft gurations
2015/7/2
The objective of this work is to develop the nec essary methods and tools to facilitate the design of low sonic boom aircraft that can fly superson ically over land with negligible environmental...
A Comprehensive Ionosphere Storm Data Analysis Method to Support LAAS Threat Model Development
Ionosphere Storm Support LAAS Threat Model
2015/6/26
Several recent papers have analyzed the potential threat of severe ionosphere spatial gradients on LAAS users [1-4]. To support this work, a comprehensive methodology has been developed to analyze WAA...
Sigma Overbounding using a Position Domain Method for the Local Area Augmentaion of GPS
Sigma Overbounding Position Domain Method Local Area Augmentaion GPS
2015/6/25
The local area augmentation system (LAAS) is a differential GPS navigation system being developed to support aircraft precision approach and landing navigation with guaranteed integrity and availabili...
ENHANCED COLLABORATIVE OPTIMIZATION: A DECOMPOSITION-BASED METHOD FOR MULTIDISCIPLINARY DESIGN
Design decomposition method plane
2015/6/18
While ATC was originally developed for object-based decomposition,
it is also applicable to multidisciplinary design problems. In this
paper, both methods are applied to a set of test cases.
Model optimization method and connected-pipe experiment of a liquid fuel ramjet engine
ramjet engine model optimization altitude test facility(ATF) connected-pipe experiment simulation technique
2014/5/19
The optimization method of a mathematical model and connected-pipe experimental technique for a test in altitude test facility (ATF) of a liquid fuel ramjet engine was researched.The optimization of t...
Development of Universal Flight Trajectory Calculation Method for Unguided Projectiles
Flight trajectory Unguided projectiles Trajectory radar measurements
2009/10/10
A universal external ballistic trajectory model for unguided projectiles is developed in this study. The mathematical model is based on the Maclaurin Series. The Maclaurin Series coecients are predic...