Results 51 to 60 of about 29,691,872 (165)

Performance of an Effective SAR Polarimetric Calibration Method Using Polarimetric Active Radar Calibrators: Numerical Simulations and LT-1 Experiments

Remote Sensing
This paper presents a new approach to polarimetric calibration, extending classical PARC-based methods by exploring new matrix combinations that broaden the applicability of the existing techniques. By investigating alternative matrix configurations, the
Yibin Chen, Liang Li, Guikun Liu, Zhengshuai Li   +3 more
doaj   +1 more source

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

Assessing Ground Deformation Dynamics and Driving Mechanisms in Beijing Using Integrated Sentinel-1A and LuTan-1 InSAR Observations

Remote Sensing
Ground deformation monitoring is pivotal for enhancing urban resilience and mitigating geohazards. This study presents a synergistic monitoring framework integrating 26 Sentinel-1A (C-band) and 16 LuTan-1 (L-band) SAR scenes acquired between December ...
Zhiwei Huang, Fengli Zhang, Yanan Jiao, Junna Yuan, Jingwen Yuan, Xiaochen Liu   +5 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

STUDI ANALISA TEBAL PERKERASAN KAKU PADA RUAS JALAN KAMPUNG DATAH BILANG - LUTAN DI KABUPATEN MAHAKAM ULU [PDF]

, 2019
Roads are one of the land transportation infrastructure that has an important role for human life. In addition to geometric road planning, road pavement is part of road planning that must be planned effectively and efficiently, because the road service ...
RAD, MU
core  

Derivation of 3-D Surface Displacements in Mining Areas Using Farneback Optical Flow Method With LuTan-1 Ascending and Descending SAR Imagery

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
This study tackles large-gradient 3-D surface deformation monitoring in mining areas, where InSAR suffers coherence loss and pixel offset tracking struggles with accuracy–efficiency balance.
Hai Huang, Xiang Zhang, Hongdong Fan, Tao Li, Jian Li, Qiqiang 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

An Advanced Interferometric Baseline Estimation Method (IBEM) for Spaceborne Bistatic SAR

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Spaceborne bistatic synthetic aperture radar (BiSAR) employs single-pass cross-track interferometry (XTI) to invert digital elevation models (DEMs) of target areas.
Yanyan Zhang, Junfeng Li, Pingping Lu, Robert Wang   +3 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