Antirange-Deception Jamming From Multijammer for Multistatic SAR

Wang, Wenjing; Wu, Junjie; Pei, Jifang; Sun, Zhichao; Yang, Jianyu; Yi, Qingying

doi:10.1109/tgrs.2021.3116109

Cited by 10 publications

(7 citation statements)

References 36 publications

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“…Even so, the optimization problem is not a difficult numerical optimization problem. There are many mature algorithms such as interior point method [27], [28], Sequential Quadratic Programming (SQP) [29], etc., which can be used to solve the problem in (15), and has good performance both in speed and accuracy. The distance term R Ji (η) and R Jj (η) in ( 9) can be expanded by Taylor series and retained to the quadratic term, which can be expressed as…”

Section: A the Localization Of The Jammermentioning

confidence: 99%

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A Joint Azimuth Multichannel Cancellation (JAMC) Antibarrage Jamming Scheme for Spaceborne SAR

Cheng

Sun²,

Cai

et al. 2022

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

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The azimuth multichannel synthetic aperture radar (SAR) increases the swath width by reducing the pulse repetition frequency (PRF), thus providing an effective scheme for realizing high-resolution and wide-swath (HRWS) imaging simultaneously. However, the quality of multichannel SAR images will suffer from electromagnetic jamming in the electronic antagonism environment. The existing channel cancellation methods not only require high positioning accuracy of the jammer and high PRF of the SAR system, but also remain periodic dark stripes, which reduce the readability of the SAR images. To solve these problems, this article proposes a scheme for multichannel SAR to locate the barrage jammer and suppress jamming signals. Firstly, by establishing the least L 1 -norm optimization model on the echoes after channel cancellation, the location of the jammer in both azimuth and range directions can be accurately estimated. Then, based on the estimated jammer position, a joint cancellation filter is constructed to remove the jamming signal from the contaminated multichannel SAR data. And the reconstruction filter is designed according to the characteristics of the remaining signal, so that the SAR system reduces the requirement for high PRF. Finally, for the case of dark strips, this paper calculates the image amplitude equalization coefficient by deducing the azimuth modulation function, and a uniform HRWS SAR image without jamming is acquired. Results of simulated and measured data validate that the proposed method can effectively remove jamming signals and obtain the HRWS SAR images.

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Section: A the Localization Of The Jammermentioning

confidence: 99%

“…Step 1: Establish the least L 1 -norm optimization model by (15) to locate the jammer. Step 2: Suppress the jamming signal on the received contaminated multichannel signals using the joint cancellation filter (22), and the remaining echoes of I − 1 channels without jamming are obtained.…”

Section: Azimuth Compensationmentioning

confidence: 99%

A Joint Azimuth Multichannel Cancellation (JAMC) Antibarrage Jamming Scheme for Spaceborne SAR

Cheng

Sun²,

Cai

et al. 2022

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

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“…Br and Ba mean range and azimuth Doppler bandwidth, respectively. In the SAR imaging scene, range delay jamming commonly used to generate false targets in range dimension [16]. Depending to the expected false target intensity and position information, the jammer performs range delay and amplitude modulation on the intercepted SAR signal.…”

Section: B Identification Of Real and False Targetsmentioning

confidence: 99%

“…Through the along-orbit interferometric cancellation, the real target and the false target generated by range delay jamming can be eliminated in the SAR image, while the false target generated by azimuth jamming can be retained. The range dimension jamming takes the range delay as an example [16]. After omitting the constant term, the antenna A2 receives the jamming signal after focusing as follows:…”

Section: A Azimuth Position Of Jammermentioning

confidence: 99%

“…However, the real targets in the same direction as jammer are also suppressed in the cancellation process. In [15] and [16], the author recognized the deceptive jamming based on the geometric characteristics of the multistatic SAR and located the position of the jammer through the position relationship between the radar and the false target, so as to realize the anti-range deceptive jamming. In brief, 1D deceptive jamming of a single style can be easily identified and eliminated.…”

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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Adaptive spectral-spatial feature fusion network for hyperspectral image classification using limited training samples

Chen

2022

International Journal of Applied Earth Observation and Geoinfor

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Antirange-Deception Jamming From Multijammer for Multistatic SAR

Cited by 10 publications

References 36 publications

A Joint Azimuth Multichannel Cancellation (JAMC) Antibarrage Jamming Scheme for Spaceborne SAR

A Joint Azimuth Multichannel Cancellation (JAMC) Antibarrage Jamming Scheme for Spaceborne SAR

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

Adaptive spectral-spatial feature fusion network for hyperspectral image classification using limited training samples

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