Results 21 to 30 of about 232 (163)

An Advanced Approach to Improve Synchronization Phase Accuracy with Compressive Sensing for LT-1 Bistatic Spaceborne SAR [PDF]

Remote Sensing, 2022
In the bistatic synthetic aperture radar (BiSAR) system, the unavoidable frequency deviation between the oscillators (USOs) will result in additional phase modulation in the demodulated radar signal, which significantly degrades the quality of the SAR ...
Yonghua Cai, Robert Wang, Weidong Yu, Da Liang, Kaiyu Liu, Heng Zhang, Yafeng Chen   +6 more
doaj   +2 more sources

LuTan-1: First Demonstration of Hybrid-Polarimetric Synthetic Aperture Radar—Assessing Application Potentials and Performance Constraints

Journal of Remote Sensing
The hybrid-polarimetric (HP) mode is an emerging synthetic aperture radar polarimetric mode that offers a wider swath and improved range ambiguity performance compared to the quadrature-polarimetric (QP) mode, with a slight loss of polarimetric ...
Lizhi Liu, Pingping Lu, Cheng Xing, Yanyan Zhang, Yonghua Cai, Fei Zhao, Bo Li, Liang Li, Aichun Wang, Ning Li, Robert Wang, Yirong Wu   +11 more
doaj   +2 more sources

LT-1 SAR Satellite Constellation for Rock Glacier Topography Mapping and Deformation Monitoring Over the Tibetan Plateau Periglacial Environment

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
The kinematics of rock glaciers is a key indicator for studying periglacial environment hydrology, climate, and disasters. The interferometric synthetic aperture radar (InSAR) technique has been demonstrated to be an effective technique for detecting the
Xuefei Zhang, Xinming Tang, Tao Li, Min Feng, Jing Wang, Xiang Zhang, Xiaoqing Zhou, Jing Lu   +7 more
doaj   +2 more sources

InSAR Inversion of the Source Mechanism of the 23 January 2024 Xinjiang Wushi M_w7.0 Earthquake

Remote Sensing
The Mw7.0 earthquake that occurred on 23 January 2024, in Wushi County, Xinjiang, China, was centered on the Maidan fault, located at the rear edge of the Kalpin reverse-thrust system in the southwestern Tianshan Mountains, at a depth of 13 km.
Mingyang Jin, Yongsheng Li, Yujiang Li
doaj   +2 more sources

LuTan-1 Satellite-Based Geological Disaster Detection in Lingbao City, Western Henan of China [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
China’s monsoon climate makes it prone to geological disasters like landslides, especially from April to October. Henan Province, with 44.3% mountainous and hilly areas, is highly vulnerable, particularly in the western, northern, and southern ...
J. Lu, X. Tang, L. Wei, L. Guo, T. Li, X. Zhang, X. Zhang   +6 more
doaj   +3 more sources

A Novel Geometric Calibration Method of Spaceborne SAR for Rugged Terrain: A Case Study of LuTan-1 Images

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
The geometric positioning accuracy of synthetic aperture radar (SAR) images is affected by the radar system measurement and processing parameters, platform ephemeris data and auxiliary DEM data. Geometric calibration can compensate for the SAR systematic
Ke Shi, Qingsong Wang, Zhiming Liu, Wenlong Hu, Haisong Weng, Yuanhui Mo, Tao Lai, Haifeng Huang   +7 more
doaj   +3 more sources

Adaptive volume coherence optimization for forest height inversion in mountainous areas using innovative spaceborne L-band bistatic InSAR

GIScience & Remote Sensing
Spaceborne L-band bistatic interferometric synthetic aperture radar (InSAR) is an advanced remote sensing technology used for forest height inversion. It enables the detection of forest vertical structures and avoids the effects of temporal decorrelation.
Jie Wan, Changcheng Wang, Yang Lei, Erxue Chen, Anmin Fu, Yu Liu, Lei Zhao, Xiaotong Liu, Jie Xu, Yaxiong Fan, Qing Song   +10 more
doaj   +2 more sources

A Study on the Identification of Geohazards in Henan Province Based on the Basic Deformation Products of LuTan-1

Remote Sensing
Henan Province, characterized by hills and mountains in its western, northern, and southern regions, is a high-risk area for geohazards in China. In this paper, we are the first to investigate the geohazards over Henan using the basic deformation ...
Jing Lu, Xinming Tang, Tao Li, Lei Wei, Lingfei Guo, Xiang Zhang, Xuefei Zhang   +6 more
doaj   +2 more sources

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   +2 more sources

Demonstration of Phase-Preserving Synchronization RFI Suppression for L-Band Spaceborne Bistatic Interferometric SAR

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Spaceborne bistatic synthetic aperture radar (BiSAR) systems utilize an intersatellite link to achieve phase synchronization. However, radio frequency interference (RFI) from communication satellites and ground-based radars often contaminates the ...
Yanyan Zhang, Junfeng Li, Pingping Lu, Tianyuan Yang, Robert Wang   +4 more
doaj   +2 more sources