Results 61 to 70 of about 200 (154)

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

Proof-of-Concept of GNSS-based Phase Synchronization for Bistatic and Multistatic SAR Missions [PDF]

This paper addresses the critical issue of phase synchronization in multistatic SAR. We present the experimental validation of a GNSS-based method, planned for use in the upcoming ESA’s Earth Explorer Harmony mission, where both the radar payload and ...
Krieger, Gerhard, Moreira, Alberto, Rodrigues Silva Filho, Eduardo, Rodriguez Cassola, Marc, Thölert, Steffen   +4 more
core  

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

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

Geocoding Refinement via Planar Block Adjustment for Spaceborne SAR Imagery in Low-Relief Terrain: A Case Study of LuTan-1

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
The geolocation accuracy of spaceborne synthetic aperture radar (SAR) imagery is crucial for a wide range of applications, yet it is often degraded by errors in onboard parameters, making accurate geocoding refinement essential.
Kefu Wu, Haiqiang Fu, Jianjun Zhu, Qijin Han, Aichun Wang, Mingxia Zhang, Huacan Hu, Dong Zeng, Zhiwei Liu, Zhiwei Li, Yang Liu   +10 more
doaj   +1 more source

A Novel DEM Block Adjustment Method for Spaceborne InSAR Using Constraint Slices. [PDF]

Sensors (Basel), 2022
Wang R, Chai H, Guo B, Zhang L, Lv X.
europepmc   +1 more source