Results 61 to 70 of about 232 (163)

Vertical analysis of windblown forest short-term decorrelation for SAR tomography: New results of the Pisascat experiment

, 2021
In the framework of developments of 3D forest SAR Tomography (Tomo-SAR), the issue of extensive and detailed characterizations of temporal decorrelation phenomena has emerged, especially for the future spaceborne operations.
Bordbari, Reza, Lombardini, Fabrizio
core  

Enhanced Co-Registration Method for Long-Baseline SAR Images

Remote Sensing
Accurate synthetic aperture radar (SAR) image co-registration is a crucial procedure for high-quality interferometry and its associated applications. Neglecting the effect of terrain elevation, conventional techniques employ simple polynomial models to ...
Dong Zeng, Haiqiang Fu, Jianjun Zhu, Qijin Han, Aichun Wang, Mingxia Zhang, Kefu Wu, Zhiwei Liu, Zhiwei Li   +8 more
doaj   +1 more source

A Parallel Sequential SBAS Processing Framework Based on Hadoop Distributed Computing

Remote Sensing
With the rapid development of microwave remote sensing and SAR satellite systems, the use of InSAR techniques has been greatly encouraged due to the abundance of SAR data with unprecedented temporal and spatial coverage. Small Baseline Subset (SBAS) is a
Zhenning Wu, Xiaolei Lv, Ye Yun, Wei Duan   +3 more
doaj   +1 more source

Rapid Detection of Ionospheric Disturbances in L-Band InSAR Systems: A Case Study Using LT-1 Data

Remote Sensing
Ionospheric effects constitute a key error source limiting the accuracy of surface deformation monitoring using L-band interferometric synthetic aperture radar (InSAR).
Huaishuai Wang, Hongjun Song, Yulun Wu, Yang Liu, Jili Wang, Xiang Zhang   +5 more
doaj   +1 more source

Heterogeneous RFI Mitigation in Image-Domain via Subimage Segmentation and Local Frequency Feature Analysis

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Radio frequency interference (RFI) may degrade the quality of remote sensing images acquired by spaceborne synthetic aperture radar (SAR). In the interferometric wide-swath mode of the Sentinel-1 satellite, the SAR receiver may capture multiple types of ...
Siqi Lai, Mingliang Tao, Yanyang Liu, Lei Cui, Jia Su, Ling Wang   +5 more
doaj   +1 more source

A Sinogram Decimation Fast Back-Projection Algorithm for Strip-Map SAR Imaging

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
In this article, a novel sinogram decimation fast back-projection (SD-FBP) algorithm for strip-map synthetic aperture radar (SAR) imaging is proposed. We first review the back-projection (BP) and the fast factorized BP (FFBP) algorithms, then analyze the
Zhiyuan Xue, Liang Li, Yijiang Nan, Fei Zou, Zongxiang Xu, Tianyuan Yang, Robert Wang   +6 more
doaj   +1 more source

Bipartite rupture in the 2025 Dingri earthquake indicates normal conjugate faulting during orogenic collapse

Communications Earth & Environment
Normal faulting in the southern Tibetan rift system reflects ongoing orogenic collapse. Here we use multisensor InSAR (Lutan-1, Sentinel-1 and ALOS-2) to map deformation from the 2025 MW 7.0 Dingri earthquake and to invert fault geometry and slip for the
Kefeng He, Jianfeng Cai, Yangmao Wen, Caijun Xu   +3 more
doaj   +1 more source

Geometric Error Analysis and Correction of Long-Term In-Orbit Measured Calibration Data of the LuTan-1 SAR Satellite

Remote Sensing
LuTan-1 (LT-1) is China’s first L-band differential interferometric synthetic aperture radar system, comprising two multi-polarization SAR satellites, LT-1A and LT-1B.
Liyuan Liu, Aichun Wang, Mingxia Zhang, Qijin Han, Minghui Hou, Yanru Li   +5 more
doaj   +1 more source

Surgical treatment for upper cervical deformity with atlantoaxial joint dislocation using individualized 3D printing occipitocervical fusion instrument: A case report and literature review. [PDF]

Medicine (Baltimore), 2021
Niu G, Chen H, Liu L, Zhou G, Zhou Q, Li C, Dai J, Nie H, Bai J, Zhang J.   +9 more
europepmc   +1 more source

Real-Time Relative Baseline Determination of Low-Earth-Orbit Satellites with GPS/BDS Uncombined Single-Difference Method

Aerospace
Onboard GNSS-based relative baseline determination has emerged as a primary solution for formation-flying satellites dedicated to mapping and remote sensing missions.
Ruwei Zhang, Xiaowei Shao, Genyou Liu, Mingzhe Li   +3 more
doaj   +1 more source