搜索结果: 1-15 共查到“理学 SAR”相关记录73条 . 查询时间(0.14 秒)

中国科学院空天院首创SAR微波视觉三维成像理论方法实现高效能与低成本SAR三维成像(图)
三维成像 理论 遥感
2025/4/20
2025年4月9日,在国家自然科学基金委员会信息科学部重大项目“合成孔径雷达微波视觉三维成像理论与应用基础研究”项目结题审查会上,中国科学院空天信息创新研究院(空天院)发布了一项原创性研究成果——合成孔径雷达(SAR)微波视觉三维成像理论方法。该技术通过引入雷达回波与图像中的微波视觉三维语义,开创了一种全新的SAR三维成像技术路径。相比传统方法,它大幅减少了三维成像所需的数据采集量,同时提升了成像...

中国科学院空天院研究团队在SAR图像多模态智能解译方面取得新进展(图)
智能 语言 遥感
2025/4/20
2025年4月2日,中国科学院空天信息创新研究院(空天院)王超研究团队在合成孔径雷达(SAR)遥感视觉语言模型领域取得新进展,实现了高分辨率SAR图像的精准视觉定位。

中国科学院精密测量院利用地基/车载L波段SAR开展川藏铁路沿线典型地质灾害科学考察(图)
地质 灾害 过程
2024/11/12
2024年10月16日,精密测量院影像大地测量与地球表面过程学科组,在国内首次利用多平台L波段合成孔径雷达(SAR),并结合无人机光学立体遥感和地面三维激光扫描仪等设备,开展青藏高原冰川冻土综合科学考察。
SAR图像目标识别综述
SAR 目标识别 深度学习 卷积神经网络
2020/3/20
SAR图像目标识别在民用和军事领域都具有重要的理论价值和应用前景,是当前目标识别及遥感信息处理研究领域中的一个热点问题。论文对SAR图像目标识别的国内外研究现状进行了综述,分析了各方法的优缺点。其中,深度学习方法具有自动提取层次化特征的优点,提高了目标识别率,在目标识别领域取得了许多优异的成果。最后介绍了SAR图像目标识别技术存在的问题以及发展趋势。
HIGH-RESOLUTION ENHANCED PRODUCT BASED ON SMAP ACTIVE-PASSIVE APPROACH USING SENTINEL 1A AND 1B SAR DATA
soil moisture microwave remote sensing active-passive algorithm SMAP Sentinel-1A -1B
2019/2/27
SMAP project released a new enhanced high-resolution (3km) soil moisture active-passive product. This product is obtained by combining the SMAP radiometer data and the Sentinel-1A and -1B Synthetic Ap...
A MULTI THREADED FEATURE EXTRACTION TOOL FOR SAR IMAGES USING OPEN SOURCE SOFTWARE LIBRARIES
software architecture feature extraction SAR images remote sensing applications algorithms of high complexity multi-threaded platform
2019/2/27
In this paper, we propose a software architecture for a feature extraction tool which is suitable for automatic extraction of sparse features from large remote sensing data capable of using higher ord...
SAR IMAGE CHANGE DETECTION BASED ON FUZZY MARKOV RANDOM FIELD MODEL
SAR change detection Markov random field fuzzy set theory
2018/5/16
Most existing SAR image change detection algorithms only consider single pixel information of different images, and not consider the spatial dependencies of image pixels. So the change detection resul...
GLACIER FRONTAL LINE EXTRACTION FROM SENTINEL-1 SAR IMAGERY IN PRYDZ AREA
SAR Glacier Frontal Sentinel-1 CFAR Profile analysis
2018/5/14
Synthetic Aperture Radar (SAR) can provide all-day and all-night observation of the earth in all-weather conditions with high resolution, and it is widely used in polar research including sea ice, sea...
RESOLUTION ENHANCEMENT ALGORITHM FOR SPACEBORN SAR BASED ON HANNING FUNCTION WEIGHTED SIDELOBE SUPPRESSION
SAR image Sidelobe suppression Hunning function
2018/5/14
Resolution and sidelobe are mutual restrict for SAR image. Usually sidelobe suppression is based on resolution reduction. This paper provide a method for resolution enchancement using sidelobe opposit...
HIGH RESOLUTION SAR IMAGING EMPLOYING GEOMETRIC FEATURES FOR EXTRACTING SEISMIC DAMAGE OF BUILDINGS
SAR Imaging Geometry Feature Building Seismic Damage Extraction
2018/5/11
Synthetic Aperture Radar (SAR) image is relatively easy to acquire but difficult for interpretation. This paper probes how to identify seismic damage of building using geometric features of SAR. The S...
ATMOSPHERIC PHASE DELAY IN SENTINEL SAR INTERFEROMETRY
Interferometric SAR differential interferometry tropospheric path delay
2018/5/14
The repeat-pass Synthetic Aperture Radio Detection and Ranging (RADAR) Interferometry (InSAR) has been a widely used geodetic technique for observing the Earth’s surface, especially for mapping the Ea...
ESTIMATION OF SURFACE DEFORMATION DUE TO PASNI EARTHQUAKE USING SAR INTERFEROMETRY
InSAR Surface Deformation Sentinet-1 Earthquake Pasni
2018/5/11
Earthquake cause ground deformation in sedimented surface areas like Pasni and that is a hazard. Such earthquake induced ground displacements can seriously damage building structures. On 7 February 20...
COMPENSATION OF THE IONOSPHERIC EFFECTS ON SAR INTERFEROGRAM BASED ON RANGE SPLIT-SPECTRUM AND AZIMUTH OFFSET METHODS – A CASE STUDY OF YUSHU EARTHQUAKE
InSAR Ionospheric effects Range split-spectrum Azimuth offset Ionosphere correction Yushu earthquake
2018/5/14
InSAR technique can measure the surface deformation with the accuracy of centimeter-level or even millimeter and therefore has been widely used in the deformation monitoring associated with earthquake...
POST-DISASTER DAMAGE ASSESSMENT THROUGH COHERENT CHANGE DETECTION ON SAR IMAGERY
Coherent Change Detection, Synthetic Aperture Radar, Automatic post-disaster damage assessment, Earthquake
2018/5/14
Damage assessment is a fundamental step to support emergency response and recovery activities in a post-earthquake scenario. In recent years, UAVs and satellite optical imagery was applied to assess m...