Results 21 to 30 of about 318 (138)

Spaceborne HRWS-SAR-GMTI System Design Method with Optimal Configuration

Remote Sensing
The spaceborne high-resolution and wide-swath synthetic aperture radar (HRWS-SAR) system combined with the ground moving target indication (GMTI) mode provides a promising prospect in the realization of wide-area target surveying and high-resolution ...
Yan Jiang, Lingyu Wang, Qing Ling, Jingtao Ma, Penghui Huang, Xingzhao Liu, Jixia Fan   +6 more
doaj   +2 more sources

High-Resolution and Wide-Swath 3D Imaging for Urban Areas Based on Distributed Spaceborne SAR

Remote Sensing, 2023
Tomographic synthetic aperture radar (TomoSAR) obtains elevation resolution by adding multiple baselines successively in the direction perpendicular to the line of sight, thereby realizing three-dimensional (3D) reconstruction of complex scenes and ...
Yaqian Yang, Fubo Zhang, Ye Tian, Longyong Chen, Robert Wang, Yirong Wu   +5 more
doaj   +2 more sources

Multi-Layer Overlapped Subaperture Algorithm for Extremely-High-Squint High-Resolution Wide-Swath SAR Imaging with Continuously Time-Varying Radar Parameters

Remote Sensing, 2022
Extremely-high-squint (EHS) geometry of the traditional constant-parameter synthetic aperture radar (SAR) induces non-orthogonal wavenumber spectrum and hence the distortion of point spread function (PSF) in focused images.
Yan Wang, Rui Min, Zegang Ding, Tao Zeng, Linghao Li   +4 more
doaj   +2 more sources

Robust Clutter Suppression and Radial Velocity Estimation for High-Resolution Wide-Swath SAR-GMTI

Remote Sensing, 2022
Moving targets are usually smeared and imaged at incorrect positions in synthetic aperture radar (SAR) images due to the target motions during the illumination time. Moreover, a moving target will cause multiple artifacts in the reconstructed image since
Zhenning Zhang, Weidong Yu, Mingjie Zheng, Liangbo Zhao, Zi-Xuan Zhou   +4 more
doaj   +2 more sources

A Multiple-Input Multiple-Output Synthetic Aperture Radar Echo Separation and Range Ambiguity Suppression Processing Framework for High-Resolution Wide-Swath Imaging

Remote Sensing
Multiple-input multiple-output (MIMO) synthetic aperture radar (SAR) is a promising scheme for high-resolution wide-swath (HRWS) imaging. After echo separation processing, a MIMO-SAR system can provide many equivalent phase centers (EPCs) in azimuth ...
Haonan Zhao, Zhimin Zhang, Zhen Chen, Huaitao Fan, Zongsen Lv, Jianzhong Bi   +5 more
doaj   +2 more sources

Matrix Inversion Method for Azimuth Reconstruction in Bistatic Spaceborne High-Resolution Wide-Swath SAR System

Leida xuebao, 2017
In bistatic spaceborne High-Resolution Wide-Swath SAR systems (HRWS-SAR), the azimuth reconstruction to obtain a uniform sampling signal or Doppler spectrum is a crucial step in image processing because azimuth signals are generally of non-uniform ...
Lin Yuchuan, Zhang Jianyun, Wu Yongjun, Zhou Qingsong   +3 more
doaj   +2 more sources

A 3D Blur Suppression Method for High-Resolution and Wide-Swath Blurred Images Based on Estimating and Eliminating Defocused Point Clouds

Remote Sensing
Traditional single-channel Synthetic Aperture Radar (SAR) cannot achieve high-resolution and wide-swath (HRWS) imaging due to the constraint of the minimum antenna area.
Yuling Liu, Fubo Zhang, Longyong Chen, Tao Jiang   +3 more
doaj   +2 more sources

Vegetation canopy height estimation in dynamic tropical landscapes with TanDEM‐X supported by GEDI data

Methods in Ecology and Evolution, Volume 14, Issue 7, Page 1639-1656, July 2023., 2023
Abstract Vegetation canopy height is a relevant proxy for aboveground biomass, carbon stock, and biodiversity. Wall‐to‐wall information of canopy height with high spatial resolution and accuracy is not yet available on large scales. For the globally consistent TanDEM‐X data, simplifications are necessary to estimate canopy height with semi‐empirical ...
Michael Schlund, Arne Wenzel, Nicolò Camarretta, Christian Stiegler, Stefan Erasmi   +4 more
wiley   +1 more source

Recognition and parameter estimation of spaceborne synthetic aperture radar pulse repetition interval modulation based on short time modified pulse repetition interval transform

IET Radar, Sonar &Navigation, Volume 16, Issue 10, Page 1696-1716, October 2022., 2022
Abstract The traditional pulse repetition interval (PRI) transform method and modified PRI transform method have a low ability to recognise the complex PRI modulation type adopted in spaceborne synthetic aperture radar systems. To solve this problem, a short‐time modified PRI transform (STMPT) method based on the traditional PRI transform method was ...
Guanyu Qiao, Dahai Dai, Caikun Zhang, Penghui Ji, Bo Pang   +4 more
wiley   +1 more source

Multi-Channel SAR System Design for HRWS and GMTI in Low PRF

IEEE Access, 2020
High-resolution and wide-swath (HRWS) is an important challenge in synthetic aperture radar (SAR). Combined SAR with array, the azimuth dual-channel SAR configuration achieves high azimuth resolution and HRWS in low Pulse repetition frequency (PRF) by ...
Xuepan Zhang, Chen Yang, Xuejing Zhang, Qingqing Lin   +3 more
doaj   +1 more source