A Deceptive Jamming Against Spaceborne SAR Based on Doppler-shift Convolutional Using FDA

Cheng, Jie; Huang, Bang; Tang, Wanru; Xu, Ziting; Wang, Wen-Qin; Zhang, Shunsheng

doi:10.1109/apsar46974.2019.9048528

Cited by 4 publications

(3 citation statements)

References 11 publications

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“…Firstly, based on the azimuth delay and Doppler coupling characteristics of the chirp signal, the Doppler modulation of the SAR slow time domain signal is performed. Then, azimuth dimension matching filter is used to generate specific deception jamming in azimuth direction [17]. After omitting the constant term, the antenna A1 receives the azimuth Doppler modulation jamming signal after focusing, and its the time-domain expression is obtained as…”

Section: B Identification Of Real and False Targetsmentioning

confidence: 99%

“…The range location of jammer is realized by intersection-orbit interferometric SAR, which can eliminate the false targets generated by azimuth Doppler modulation jamming and keep the false targets generated by range delay jamming. Here, we use azimuth Doppler modulation as azimuth dimensional jamming [17]. Antenna A3 receives jamming signal after focusing can be expressed as:…”

Section: B Range Position Of Jammermentioning

confidence: 99%

“…In brief, 1D deceptive jamming of a single style can be easily identified and eliminated. With the continuous emergence of the new SAR system, the information processing capability of the SAR system is becoming stronger and stronger, and the twodimensional (2D) deceptive jamming optimized and combined with the basic interference pattern has gradually become a hot topic [17] [21]. Therefore, it is necessary and urgent to demonstrate how to effectively resist 2D deceptive jamming without affecting the real target.…”

Section: і Introductionmentioning

confidence: 99%

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An Anti-2D Deceptive Jamming Method for Multi-Baseline Interferometric SAR Based on Co-Localization Jammer

Lang

Tang

Mei

et al. 2022

IEEE J. Sel. Top. Appl. Earth Observations Remote Sensing

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─Aimed at the problem that range-azimuth joint jamming can effectively generate high fidelity false targets in synthetic aperture radar (SAR) images, an anti-2D deceptive jamming method for multi-baseline interferometric SAR is proposed in this paper. The method consists of three steps: identification, classification and suppression. Firstly, the target is detected in the sea clutter background using constant false alarm rate algorithm, and then the false target is identified base on the difference of the spatial position of the target in different SAR images. Secondly, through the analysis of the generating principle of deceptive jamming, the false target is classified by multibaseline interferometric SAR according to partial prior knowledge, which is designed based on the differences between the interferometric phase of the true and false target. Finally, the position of the active jammer is co-located underlying the phase equalization characteristics between multiple baselines and the geometric configuration of the SAR, and the adaptive beamforming method is supplied to suppress the jamming signal. The proposed method has a significantly improved ability to suppress jamming relative to interferometric phase cancellation. The effectiveness of the proposed method is verified by simulation.

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Section: B Identification Of Real and False Targetsmentioning

confidence: 99%

Section: B Range Position Of Jammermentioning

confidence: 99%