Fast Generation of Deceptive Jamming Signal Against Spaceborne SAR Based on Spatial Frequency Domain Interpolation

Yang, Kaizhi; Ma, Fangfang; Da, Ren; Ye, Wei; Li, Guojing

doi:10.1109/tgrs.2021.3065312

Cited by 9 publications

(7 citation statements)

References 26 publications

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“…The trajectory deviation construction model used in the HDE algorithm, as per Equation (23), assumes center beam approximation. It means that at the same azimuth moment, all targets within the beam irradiation range are constructed according to the trajectory deviation of the beam center target.…”

Section: A Center Beam Approximation Errormentioning

confidence: 99%

“…If the nonlinear-trajectory jamming modulation characteristics are not discussed, only the calculation efficiency of the algorithm is considered. In Table 3, the basic operation amount of the linear trajectory SAR efficient deceptive jamming algorithm, the spatial frequency-domain interpolation (SFI) [23] algorithm and the segmented modulation (SM) [14] algorithm are supplemented.…”

Section: Computational Complexity Analysismentioning

confidence: 99%

“…According to the different jamming effects, active jamming techniques for SAR are divided into barrage jamming and deceptive jamming. Barrage jamming uses high-powered noise to attenuate the signal to jamming ratio within a specific region to cover up the real target [6][7][8][9].The deceptive jamming confuses target identification without causing enemy awareness by directly generating or modulating-retransmitting false target echo signals and implanting false electromagnetic features in SAR radar images [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24]. Compared with barrage jamming, deceptive jamming is characterized by higher concealment, lower power consumption and more flexible application scenarios.…”

Section: Introductionmentioning

confidence: 99%

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Hybrid Domain Efficient Modulation-Based Deceptive Jamming Algorithm for Nonlinear-Trajectory Synthetic Aperture Radar

et al. 2023

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Deception jamming of synthetic aperture radar (SAR) has attracted extensive attention due to its low power consumption and high fidelity advantages. However, existing SAR deception jamming algorithms assume that SAR operates on a linear trajectory. In practice, SAR trajectories often become nonlinear due to factors such as atmospheric turbulence, which results in the jamming signals lacking the two-dimensional spatial variability of nonlinear-trajectory SAR echo signal and affects the imaging quality of deception jamming. This paper proposes a new algorithm for nonlinear-trajectory airborne SAR deception jamming based on hybrid domain efficient (HDE) modulation. This algorithm derives the jamming frequency response (JFR) with SAR trajectory deviation in the azimuth time–frequency hybrid domain. Based on the hybrid domain modulation, the jammer calculates the JFR of the linear trajectory in the azimuth frequency domain and constructs for the real-time trajectory deviation pulse by pulse at each azimuth moment. The real-time modulation process of the algorithm only involves range domain Fourier transform and complex multiplication, combining computational efficiency and modulation flexibility. The validity constraints of the algorithm have been analyzed to ensure the focusing ability of the jamming signal. Simulation and computational complexity analysis validate the excellent performance of the algorithm in imaging quality and efficiency.

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Section: A Center Beam Approximation Errormentioning

confidence: 99%

Section: Computational Complexity Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Hybrid Domain Efficient Modulation-Based Deceptive Jamming Algorithm for Nonlinear-Trajectory Synthetic Aperture Radar

et al. 2023

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“…On the one hand, the inverse range Doppler algorithm (IRDA) [10], two‐step method [11], frequency‐domain three‐level method [12], and mosaic scene deception jamming method based on two‐dimensional separation [13] improve the generation speed of the SAR deception jamming signal by sacrificing the imaging quality of the jamming signal. On the other hand, the inverse Omega‐K algorithm (IωKA) [14], time‐delay and frequency‐shift with template segmentation (TDFS‐TS) algorithm [15], recursive algorithm (RA) [9], spatial frequency‐domain interpolation (SFI) algorithm [16] achieve better imaging quality of the SAR deception jamming signal but at the expense of the SAR deception jamming signal generation speed.…”

Section: Introductionmentioning

confidence: 99%

Generation of a synthetic aperture radar deception jamming signal based on a deep echo inversion network

Xiao

Dai

et al. 2023

IET Radar Sonar & Navi

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Existing methods for generating synthetic aperture radar (SAR) deception jamming signals have slow speed, low imaging quality, and insufficient intelligence in complex electromagnetic environments. This paper proposes a deep learning-based SAR deception jamming signal generation method based on deep echo inversion Unet (DEIUnet). This method has high speed and provides high-image quality of the interference signal. A Swin Next (SN) block is proposed to combine local and non-local information in the image and echo data. The Unet structure consists of SN blocks, and a residual connection is used as the jump connection to fuse the multi-scale feature information from the echo and image data. PixelShuffle is utilised for up-sampling to generate high-quality echo data. The experimental results on MSTAR and Sentinel-1 data sets verify the effectiveness and superiority of DEIUnet for echo inversion. The imaging results of the SAR deception jamming signal generated by DEIUnet on an MSTAR scene confirm the effectiveness of the proposed method. K E Y W O R D S deception jamming signal generation, deep echo inversion unet (DEIUnet), synthetic aperture radar (SAR)This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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“…For example, the digital radio frequency memory (DRFM) system [17] can coherently and repeatedly receive and retransmit SAR signals and series of identical duplicate signals. However, the power required by this method is also very high because interference signals transmitted by the system are incoherent in the Doppler domain [18], even if the jamming signal can obtain a high-range compression gain. Therefore, the effect of interference is not perfect.…”

Section: Introductionmentioning

confidence: 99%

A Novel Jamming Method against SAR Using Nonlinear Frequency Modulation Waveform with Very High Sidelobes

et al. 2022

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Synthetic aperture radar (SAR) systems have the capacity for day-and-night and all-weather surveillance, which has become increasingly indispensable for military surveillance and global comprehensive environmental monitoring. With the development of the high-resolution SAR imaging technique, studies on SAR jamming have also received much interest. Traditional jamming methods are based on linear-frequency-modulated (LFM) signals, and this method can achieve high main-lobe jamming gain. However, its sidelobe jamming energy is very low. To solve this issue, a novel nonlinear frequency modulation (NLFM) waveform design method for SAR jamming is proposed in this paper. Compared with LFM waveforms, the designed waveforms have the same main-lobe jamming gain and very high sidelobes, which can significantly improve jamming performance. Moreover, detailed simulation experiments were carried out to verify the effectiveness of the newly proposed jamming scheme.

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Fast Generation of Deceptive Jamming Signal Against Spaceborne SAR Based on Spatial Frequency Domain Interpolation

Cited by 9 publications

References 26 publications

Hybrid Domain Efficient Modulation-Based Deceptive Jamming Algorithm for Nonlinear-Trajectory Synthetic Aperture Radar

Hybrid Domain Efficient Modulation-Based Deceptive Jamming Algorithm for Nonlinear-Trajectory Synthetic Aperture Radar

Generation of a synthetic aperture radar deception jamming signal based on a deep echo inversion network

A Novel Jamming Method against SAR Using Nonlinear Frequency Modulation Waveform with Very High Sidelobes

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