Results 11 to 20 of about 77 (75)

Focus Improvement of Airborne High-Squint Bistatic SAR Data Using Modified Azimuth NLCS Algorithm Based on Lagrange Inversion Theorem

Remote Sensing, 2021
In this paper, a modified azimuth nonlinear chirp scaling (NLCS) algorithm is derived for high-squint bistatic synthetic aperture radar (BiSAR) imaging to solve its inherent difficult issues, including the large range cell migration (RCM), azimuth ...
Chuang Li, Heng Zhang, Yunkai Deng
doaj   +1 more source

Focusing high-squint and large-baseline one-stationary bistatic SAR data using keystone transform and enhanced nonlinear chirp scaling based on an ellipse model

EURASIP Journal on Advances in Signal Processing, 2017
This paper deals with the imaging problem for one-stationary bistatic synthetic aperture radar (BiSAR) with high-squint, large-baseline configuration.
Hua Zhong, Song Zhang, Jian Hu, Minhong Sun   +3 more
doaj   +1 more source

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

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   +1 more source

Data-Driven Motion Compensation for Airborne Bistatic SAR Imagery Under Fast Factorized Back Projection Framework

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
Due to the independence of azimuth invariance and high implementing efficiency, a fast time-domain algorithm has significant advantages for airborne bistatic synthetic aperture radar (BiSAR) data process with general geometric configuration.
Min Bao, Song Zhou, Lei Yang, Mengdao Xing, Lifan Zhao   +4 more
doaj   +1 more source

A Bistatic Imaging Method for GEOSAR in the Strip Mode and UAVSAR in the Steering Beam Mode

International Journal of Antennas and Propagation, Volume 2018, Issue 1, 2018., 2018
The bistatic configuration with a geosynchronous orbital SAR (GEOSAR) transmitter and unmanned aerial vehicle SAR (UAVSAR) receiver can continuously image in any dangerous and interesting district. In this paper, the new imaging method in the case with the smaller orbital inclination of geosynchronous earth orbit and the steering beam working mode of ...
W. Zhuo-qun, L. Ya-jun, S. Sheng, L. Shuang-shuang, X. Jin-guo, W. Jun-qiang, Z. Jian-hua, Herve Aubert   +7 more
wiley   +1 more source

Imaging Formation Algorithm of the Ground and Space‐Borne Hybrid BiSAR Based on Parameters Estimation from Direct Signal

Mathematical Problems in Engineering, Volume 2014, Issue 1, 2014., 2014
This paper proposes a novel image formation algorithm for the bistatic synthetic aperture radar (BiSAR) with the configuration of a noncooperative transmitter and a stationary receiver in which the traditional imaging algorithm failed because the necessary imaging parameters cannot be estimated from the limited information from the noncooperative data ...
Qingjun Zhang, Cheng Hu, Lixin Wu, Tao Zeng, Teng Long, Jui-Sheng Lin   +5 more
wiley   +1 more source

Analysis for Resolution of Bistatic SAR Configuration with Geosynchronous Transmitter and UAV Receiver

International Journal of Antennas and Propagation, Volume 2013, Issue 1, 2013., 2013
Bistatical SAR with geosynchronous illuminator and unmanned aerial vehicle receiver (GEO‐UAV BiSAR) has significant potential advantages in the field of continuous local observation under a dangerous environment within nearly 24 h. Due to the extreme platform velocity differences, the ellipse orbital movement of GEOSAR makes this BiSAR configuration ...
Yicheng Jiang, Zhuoqun Wang, Gui Gao
wiley   +1 more source

A Novel Bistatic SAR Maritime Ship Target Imaging Algorithm Based on Cubic Phase Time-Scaled Transformation

Remote Sensing, 2023
Due to the advantages of flexible configuration, bistatic synthetic aperture radar (BiSAR) has the ability to effectively observe from various visual angles, such as forward view area and squint area, and has good anti-jamming characteristics.
Qing Yang, Zhongyu Li, Junao Li, Hongyang An, Junjie Wu, Yiming Pi, Jianyu Yang   +6 more
doaj   +1 more source

Fast Factorized Backprojection Algorithm in Orthogonal Elliptical Coordinate System for Ocean Scenes Imaging Using Geosynchronous Spaceborne–Airborne VHF UWB Bistatic SAR

Remote Sensing, 2023
Geosynchronous (GEO) spaceborne–airborne very high-frequency ultra-wideband bistatic synthetic aperture radar (VHF UWB BiSAR) can conduct high-resolution and wide-swath imaging for ocean scenes.
Xiao Hu, Hongtu Xie, Lin Zhang, Jun Hu, Jinfeng He, Shiliang Yi, Hejun Jiang, Kai Xie   +7 more
doaj   +1 more source

Review of Bistatic Synthetic Aperture Radar Imaging Methods

Leida xuebao
The bistatic Synthetic Aperture Radar (SAR) system, which employs spatially separated transmitting and receiving platforms, provides high-resolution imaging of terrestrial and maritime scenes and targets in complex environments.
Junjie WU, Jianyu YANG, Zhongyu LI, Wei PU, Zhichao SUN, Hongyang AN, Qing YANG   +6 more
doaj   +1 more source