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| 1 | 高分辨率SAR数据在三峡库区滑坡监测中的应用显示文摘结合当前雷达差分干涉测量(D-InSAR)技术的发展,以TerraSAR-X数据为例,重点研究高分辨率SAR数据在三峡库区滑坡监测中的应用.实验结果表明,利用高分辨率SAR影像幅度和差分干涉相位信息,可以成功地检测到三峡库区滑坡发生所处的时间段、地点以及形变,验证了高分辨率雷达数据InSAR技术进行滑坡检测的有效性.针对三峡库区大气效应对差分干涉的影响,应用时间序列InSAR技术进行滑坡体的缓慢形变监测,结果表明滑坡体形变大小和三峡水库的水位变化有一定的关系,可以为滑坡预警提供重要依据.高分辨率TerraSAR-X数据和中分辨率ASAR数据的形变监测结果的分析比较表明,由于TerraSAR-X数据具有较短波长以及较高的时间和空间分辨率,能够取得更好的形变监测效果,可以应用于滑坡和泥石流等地质灾害的监测和预警等方面的工作. | 廖明生 唐婧 王腾 Timo BALZ 张路 | 2012 | 中国科学:地球科学2012，42，2： | 57 |
| 2 | 利用外部DEM辅助山区SAR立体像对匹配及地形制图显示文摘SAR立体像对的匹配是利用雷达摄影测量技术提取地形高程信息的关键,匹配精度将直接影响结果 DEM的高程精度。针对山区SAR立体像对匹配过程中同名点选取困难的问题,引入外部粗分辨率DEM作为辅助数据,将该DEM高程转换为视差,为匹配提供初值,同时采用金字塔匹配策略,不仅可以缩小搜索范围,提高搜索效率,而且能够减少粗差的产生。试验结果表明,采用外部DEM辅助之后,匹配粗差点数量相对于传统的雷达摄影测量处理结果明显减少,从而有效地提高了高程信息提取重建的精度。 | 贺雪艳 张路 Timo BALZ 廖明生 | 2013 | 测绘学报2013，42，3： | 16 |
| 3 | 压缩感知在城区高分辨率SAR层析成像中的应用显示文摘在建筑密集的城区复杂场景中,高分辨率SAR影像中存在严重的叠掩效应,影像解译的难度加大。SAR层析成像可以分离单个分辨单元内混叠的散射体目标,并且获取各个散射体的3维位置和后向散射强度。该文首先论述了3维SAR层析成像的基本原理,针对传统谱估计法获得的高程向分辨率较低的问题,综述了压缩感知方法在城区3维SAR层析成像中的应用,以基追踪和双步迭代收缩阈值法为例,开展了Terra SAR-X聚束模式数据实验,并与传统的奇异值阈值法进行了对比分析。研究结果表明压缩感知方法的高程向超分辨率、旁瓣抑制优势明显,在城区SAR层析成像中具有广阔的应用前景。 | 廖明生 魏恋欢 汪紫芸 Timo Balz 张路 | 2015 | 雷达学报(中英文)2015，4，2： | 16 |
| 4 | Landslide monitoring with high-resolution SAR data in the Three Gorges region显示文摘Employing the well-known D-InSAR technique,we investigated landslide monitoring in the Three Gorges region using TerraSAR-X data.The experiment demonstrates that using both the amplitude and differential phase allows us to identify the precise location,deformation and time range of occurrence of certain landslides.To overcome the atmospheric effect on D-InSAR results,a time-series analysis was also carried out.The observed nonlinear relationship between the deformation and water level suggests that reservoir water level fluctuation is one of the major causes of landslides,which is significant in terms of issuing landslide warnings.In addition,the comparison of TerraSAR-X and C-band ASAR data results indicates that TerraSAR-X data provide far more reasonable deformation measurements because of their high temporal and spatial resolutions. | MingSheng Liao Jing Tang Teng Wang Timo Balz Lu Zhang | 2012 | Science China Earth Sciences2012，55，4： | 15 |
| 5 | 利用后向散射特性从高分辨率SAR影像中提取建筑物高度显示文摘研究了一种基于雷达后向散射特性,从单张星载高分辨率SAR影像提取建筑物高度的方法。该方法通过检测建筑物二次散射强度,同时获取目标方位角、入射角等参数以及相关介质特性等信息,根据后向散射几何光学模型估算建筑物高度。实验验证了对于相当一部分典型建筑物都能够获得较为理想的高程估计值,进而证明了该方法提取建筑物高度的可行性和有效性。 | 刘康 Timo Balz 廖明生 | 2012 | 武汉大学学报(信息科学版)2012，37，7： | 11 |
| 6 | 高分辨率SAR层析成像建筑物叠掩散射体提取显示文摘阐述了SAR层析成像的基本原理,提出了基于Butterworth滤波的奇异值分解层析算法。利用柏林市高分辨率TerraSAR-X数据进行实验,提取了SAR像元内散射体的数量、位置及反射量,实现了星载高分辨率SAR真实数据层析成像,高程向估计精度达到米级。 | 魏恋欢 廖明生 BALZ Timo 张路 | 2014 | 武汉大学学报(信息科学版)2014，39，5： | 10 |
| 7 | TomoSAR技术在城市形变监测中的应用显示文摘作为永久散射体雷达干涉测量技术的延伸,多基线SAR层析成像技术能够分离单个SAR像素内的多重散射体信号,精确地获取人工地物目标的三维位置和形变信息,突破城市地区形变监测中叠掩效应的制约,实现城市动态形变监测。尤其是新一代高分辨率SAR卫星发射成功后,为城市动态形变监测研究提供了大量高分辨率高精度数据源。本文首先介绍SAR层析技术的理论模型,然后归纳了现有的层析算法和应用领域,最后探讨了该技术发展面临的关键问题并展望了其广阔发展前景。 | 廖明生 魏恋欢 BALZ Timo 张路 | 2013 | 上海国土资源2013，34，4： | 10 |
| 8 | 利用压缩感知方法的高分辨率三维层析SAR研究显示文摘利用压缩感知方法解决SAR三维层析成像中的频谱估计问题,弥补了传统谱估计方法的一些缺陷,准确重建了来自不同散射目标的回波信号。实验结果表明,该方法不仅能够有效地区分影像中同一像元中的多个散射体,而且可以较为准确地获取目标散射体相对强度分布及高程信息,为目标的分类和识别提供更多依据,显现出对数据量要求较少及抗噪声性能强等优势。 | 刘康 廖明生 Timo Balz | 2012 | 武汉大学学报(信息科学版)2012，37，12： | 3 |
| 9 | Absolute geolocation accuracy of high-resolution spotlight TerraSAR-X imagery–validation in Wuhan显示文摘TerraSAR-X(TSX)can acquire high-resolution SAR images and due to its high orbit precision as well as its ability to acquire data from different off-nadir viewing angles,the high-precision stereo geolocation can be obtained.In this study,we investigate the absolute geolocation accuracy of TSX high-resolution images in Wuhan,China.We present a direct stereo SAR geolocation method and analyze the 2D and 3D geoposition accuracy of two corner reflectors.The sub-meter localization accuracy was achieved using only atmospheric correction information available in the TSX metadata. | Jinghui Wang Timo Balz Mingsheng Liao | 2016 | Geo-Spatial Information Science2016，19，4： | 1 |
| 10 | 一种用于SAR影像地理编码的改进的三维网格插值方法显示文摘针对传统的SAR影像地理编码方法在处理效率和定位精度方面存在的问题,提出了一种基于改进的三维网格插值的地理编码方法。采用ENVISAT ASAR数据的实验结果表明,相对于原始的三维网格插值方法,该方法能够以有限增加计算时间开销为代价,大幅提高几何定位精度,可以有效地用于实现SAR影像的快速高精度地理编码。 | 史绪国 张路 Timo Balz 廖明生 | 2012 | 武汉大学学报(信息科学版)2012，37，11： | 1 |
| 11 | Monitoring the built-up environment of Shanghai on the street-block level using SAR and volunteered geographic information显示文摘In this geo-statistical analysis of change detection,we illustrate the evolution of the built-up environment in Shanghai at the street-block level.Based on two TerraSAR-X image stacks with 36 and 15 images,covering the city centre of Shanghai for the time period from 2008 to 2015,a set of coherence images was created using a small baseline approach.The road network from Open Street Map,a volunteered geographic information product,serves as the input dataset to create street-blocks.A street-block is surrounded by roads and resembles a ground parcel,a real estate property–a cadastral unit.The coherence information is aggregated to these street-blocks for each observation and the variation is analysed over time.An analysis of spatial autocorrelation reveals clusters of similar behaviours.The result is a detailed map of Shanghai highlighting areas of change.We argue that the aggregation and grouping of synthetic aperture radar coherence image information to real-world entities(street-blocks)is comprehensible and relevant to the urban planning process.Therefore,this research is a contribution to the community of urban planners,designers,and government agencies who want to monitor the development of the urban landscape. | Michael Jendryke Stephen C.McClure Timo Balz Mingsheng Liao | 2017 | International Journal of Digital Earth2017，10，7： | 0 |
| 12 | Remote sensing-based deformation monitoring of pagodas at the Bagan cultural heritage site,Myanmar显示文摘As a World Cultural Heritage site with sacred landscape featuring an exceptional range of Buddhist art and architecture,much attention has been focused on the sustainable development of Bagan(Myanmar).Particularly,the monitoring of landscape surface subsidence and monument instability is of great importance to the protection and development planning of the Bagan heritage site.In this study,we applied high resolution TerraSAR-X imagery acquired from 2019 to 2020 for deformation monitoring based on the small baseline subset(SBAS)and persistent scatterer synthetic aperture radar interferometry(PSInSAR)approaches.We identified several hotspots and pagodas with displacement anomalies linked to land cover change and previous earthquakes.The cross comparison between SBAS and PSInSAR and the precision of height estimates derived by PSInSAR indicated a millimetric precision of the derived deformation products.The combination of the two multi-temporal SAR interferometry approaches satisfies the two-scale monitoring requirements from landscapes to monuments,particularly for large-scale World Heritage sites.The non-contact monitoring method has potential when traditional methods using field accessibility and surveillance are constrained. | Fulong Chen Wei Zhou Yunwei Tang Ru Li Hui Lin Timo Balz Jin Luo Pilong Shi Meng Zhu Chaoyang Fang | 2022 | International Journal of Digital Earth2022，15，1： | 0 |
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