Results 11 to 20 of about 1,687,297 (114)

Efficient Simulation for Fixed-Receiver Bistatic SAR with Time and Frequency Synchronization Errors [PDF]

open access: yesRadioengineering, 2015
Time and frequency synchronization is the key technique of bistatic synthetic aperture radar (BiSAR) system, and raw data simulation is an effective tool for verifying the time and frequency synchronization techniques. According to the two-dimensional (2-
Feifei Yan, Wenge Chang, Xiangyang Li
doaj   +2 more sources

Bistatic synthetic aperture radar using GNSS as transmitters of opportunity [PDF]

open access: yes, 2012
The thesis summarizes the research on the feasibility investigation of Space-Surface (i.e. a spaceborne transmitter and an airborne receiver) Bistatic Synthetic Aperture Radar (SSBSAR)with a Global Navigation Satellite System (GNSS) which is used as a ...
Zuo, Rui
core   +7 more sources

An Advanced Phase Synchronization Scheme Based on Coherent Integration and Waveform Diversity for Bistatic SAR

open access: yesRemote Sensing, 2021
In the bistatic synthetic aperture radar (BiSAR) system, the deviation between two oscillators in different platforms will cause an additional modulation of BiSAR echoes.
Da Liang   +4 more
doaj   +1 more source

Single-Pass Bistatic SAR Interferometry Using Fixed-Receiver Configurations: Theory and Experimental Validation [PDF]

open access: yes, 2010
In this paper, bistatic interferometry using fixed-receiver configurations is addressed both theoretically and experimentally. The analytical expressions for interferometric phase and height sensitivity are derived, and a full interferometric processing ...
Mallorqui, Jordi J.   +5 more
core   +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

open access: yesEURASIP 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   +3 more
doaj   +1 more source

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

open access: yesRemote 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

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

open access: yesRemote 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   +6 more
doaj   +1 more source

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

open access: yesInternational 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   +7 more
wiley   +1 more source

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

open access: yesMathematical 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   +5 more
wiley   +1 more source

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

open access: yesInternational 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

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