搜索结果: 1-15 共查到“地图制图技术 InSAR”相关记录17条 . 查询时间(0.14 秒)
随着不同成像参数SAR卫星不断发射升空以及新 的I nSAR技术不断出现,同一地区可以获取多尺度、多 源、异 质 的I nSAR地 表 形 变 监 测 数 据.将 这 些 多 源 I nSAR地表形变监测数据作为观测量,实际三维地表形 变作为未知参数,建立模型并解算,实现东西、南北和垂 直向地表形变监测,为地质灾害预报及监测提供更全面 的基础资料.本文以I nSAR三维地表形变解算为核心研 究内容...
MODEL ACCURACY COMPARISON FOR HIGH RESOLUTION INSAR COHERENCE STATISTICS OVER URBAN AREAS
Interferometric Synthetic Aperture Radar (InSAR) Coherence Statistics Model Accuracy Urban Areas
2016/11/24
The interferometric coherence map derived from the cross-correlation of two complex registered synthetic aperture radar (SAR) images is the reflection of imaged targets. In many applications, it can a...
STUDY ON GPS STATION’S ZENITH DELAY TO MITIGATE THE INSAR ATMOSPHERE EFFECT
Atmosphere SAR GPS Temporal Correlation Climate
2015/12/30
Both InSAR and GPS can detect tropospheric delay of radar beam propagation caused by water vapour fluctuation. What InSAR detected is the differential results of two SAR images taken at two epochswhos...
HIGH TEMPORAL RESOLUTION PERMAFROST MONITORING USING A MULTIPLE STACK INSAR TECHNIQUE
InSAR Permafrost Infrastructure Monitoring
2015/5/7
The combined effect of climate change and accelerated economic development in Northern regions increases the threat of permafrost related surface deformation to buildings and transportation infrastr...
COMPARISON OF TANDEM-X INSAR AND TERRASAR-X STEREORADARGRAMMETRIC 3D METRICS IN MAPPING OF FOREST RESOURCES
Interferometry Stereo Radargrammetry
2015/5/6
Accurate forest resources maps are needed in diverse applications ranging from the local forest management to the global climate change research. In particular, it is important to have tools to map ...
THE DOUBLE INTERPOLATION AND DOUBLE PREDICTION (DIDP) APPROACH FOR INSAR AND GPS INTEGRATION
Synthetic Aperture Radar Interferometry Global Positioning System Crustal Deformation
2014/12/30
The technique of synthetic aperture radar interferometry (or InSAR) was first suggested in 1974. Due to its characteristics of very high spatial resolution and wide coverage, as well as the cost effec...
MAP PRODUCTION IN VENEZUELA USING AIRBORNE INSAR
Interferometry Airborne SAR Rain Forest Cartography Radar images DEM
2014/12/29
This paper is a final report of a project to map a cloudy tropical region of 266,616 km2 in southern Venezuela using single pass airborne interferometric synthetic aperture radar (InSAR). The paper su...
Classic approaches for the detection of flooded areas are based on a static analysis of optical images and/or SAR data during and after the event. In this paper, we aim to extract the flooded zones by...
INSAR OF AQUATIC BODIES
Space Monitoring SAR Change Detection Estimation Dynamic Oceanography Sustainable
2014/4/29
Radar remote sensing is a new earth observation technology with promising results and future. InSAR is a sophisticated radar remote sensing technique for combining synthetic aperture radar (SAR) singl...
基于信噪比的InSAR干涉图自适应滤波
InSAR 自适应滤波 信噪比
2010/1/11
提出了一种基于信噪比的InSAR干涉图相位噪声抑制算法。该算法对Goldstein滤波方法进行了改进，使Goldstein滤波参数 依赖于局部信噪比，从而实现对低信噪比区域进行强滤波、高信噪比区域弱滤波。采用模拟数据和真实数据进行验证，结果表明新算法能有效抑制InSAR干涉图的噪声。
InSAR平地相位去除算法及其对DEM精度影响研究
雷达干涉 平地相位 轨道数据
2009/11/24
准确有效去除干涉纹图中的平地相位是精确重建DEM的关键。探讨了两类常见的去平地相位方法（基于地理定位和基于干涉频谱），分析了其所引起的误差影响。通过Envisat和JERS-1两种数据的验证结果表明： 在可获取精密轨道数据的情况下，基于地理定位的去平地方法能够有效去除干涉纹图中所包含的平地相位，并很好地控制最终所得的DEM误差，其效果优于基于干涉频谱的去平方法； 基于干涉频谱的去平方法在干涉频谱平...
大图像分块法在InSAR处理中的应用探讨
InSAR 大图像 分块 图像处理
2009/8/7
InSAR作为重要的测绘手段之一,它的处理涉及的数据量通常很大,大数据量与有限的计算机内存容量是干涉处理面临的主要矛盾之一.分块是解决这类问题的经典方法,但在InSAR处理中的应用具有一定的特殊性,主要是分块技术要与较为复杂的算法紧密结合.按照输入图像和输出图像的空间关联特性将图像处理算法分为3类:点相关、域相关和全局相关,并结合InSAR处理中不同步骤的算法特点,分析探讨大图像分块技术在...
作为InSAR系列讲座的第三篇,本文首先介绍干涉相位信号及InSAR测高与探测形变的基本原理.最后比较并讨论其在地表高程和形变测量中的敏感程度.
InSAR系列讲座4 InSAR数据处理及关键算法
数据处理 InSAR系列
2009/8/3
作为InSAR系列讲座的第四篇,本文介绍并讨论InSAR数据处理方法和关键算法,并对主要的数据处理流程以数学模型的形式进行了概括.
InSAR系列讲座5:InSAR系统中的误差传播
误差传播 InSAR系列
2009/8/3
作为InSAR系列讲座的第五篇,本文介绍InSAR高程与形变测量中的误差来源,对主要误差源(干涉相位、基线参数和地形数据)推导出误差传播模型.此外,还将讨论地形数据误差对干涉形变测量的影响.