Band pass filter design against interrupted‐sampling repeater jamming based on time‐frequency analysis

Chen, Jian; Wu, Wenzhen; Xu, Shanjia; Chen, Zengping; Zou, Jiangwei

doi:10.1049/iet-rsn.2018.5658

Cited by 72 publications

(40 citation statements)

References 27 publications

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“…Then H (f ) is smoothed to make noise background of the final PC result suitable for constant false alarm rate (CFAR) target detection [21]. H (f ) is squared, and then detected by a CFAR detector with a relatively high false alarm probability.…”

Section: Methodsmentioning

confidence: 99%

“…The filtering methods to suppress ISRJ for LFM radar are promising, which extract the jamming-free signal segments in time domain, generate a band pass filter to suppress jamming in dechirped signal [18]- [21]. Gong et al [18] proposed a filter generating method in 2014.…”

Section: Introductionmentioning

confidence: 99%

“…However, it suffers performance deterioration under low signal to noise ratio (SNR) and high jamming to signal ratio (JSR) conditions, due to the poor extraction accuracy of the jamming-free signal segments. Chen et al [21] proposed a band pass filter design method based on the TF analysis, which is the state-of-the-art filtering method. The method automatically detects and extracts the jammingfree signal segments by a function constructed from the TF energy distribution of the de-chirped signal, named max-TF function.…”

Section: Introductionmentioning

confidence: 99%

“…The method has improved the extraction accuracy, leading to a higher suppression performance and extended feasible scope of SNR and JSR than the previous filtering methods. However, the extraction accuracy could be further improved, since the noise segment elimination approach used in [21] is imprecise and may be misled by frequency shifted ISRJ.…”

Section: Introductionmentioning

confidence: 99%

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Interrupted-Sampling Repeater Jamming Suppression Based on Stacked Bidirectional Gated Recurrent Unit Network and Infinite Training

2019

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Interrupted-sampling repeater jamming (ISRJ) is coherent jamming based on digital radio frequency memory (DRFM) device, which repeatedly samples, stores, modulates, and retransmits part of the radar emitted signal, and flexibly forms false targets in the victim radar with relatively low transmitting power. It significantly interferes the radar to detect, track, and recognize targets. There are many electronic counter-countermeasures against ISRJ, among which a series of filtering methods are promising. However, it is not fully addressed. This study proposes a filtering method based on stacked bidirectional gated recurrent unit network (SBiGRU) and infinite training to fulfill the ISRJ suppression for pulse compression (PC) radar with linear frequency modulation (LFM) waveform. SBiGRU method converts signal extraction into a temporal classification problem and accurately extracts the jamming-free signal segments to generate a band pass filter to suppress the ISRJ and retain the real target signal components simultaneously. Comparing with two most advanced filtering methods in the published literature, SBiGRU method has improved the jamming-free signal extraction accuracy, leading to better performances of ISRJ suppression and real targets detection, which are verified by Monte Carlo Simulations.INDEX TERMS Band pass filter, digital radio frequency memory (DRFM), electronic countercountermeasure (ECCM), gated recurrent unit (GRU), infinite training, interrupted-sampling repeater jamming (ISRJ), signal extraction, temporal classification.The associate editor coordinating the review of this manuscript and approving it for publication was Alma Y. Alanis.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Interrupted-Sampling Repeater Jamming Suppression Based on Stacked Bidirectional Gated Recurrent Unit Network and Infinite Training

2019

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“…Inspired by the discontinuous characteristics of the jammer signal in time–frequency (TF) 2D domain of the ISRJ signal, a particular band-pass filter has been designed for jammer suppression [13]. Chen et al [14] have extended their research on both the anti-jamming performance and the signal-to-ratio (SNR) scope. The ECCM approach based on time-frequency filtering has also been used to the wideband radar [15].…”

Section: Introductionmentioning

confidence: 99%

Bayesian Compress Sensing Based Countermeasure Scheme Against the Interrupted Sampling Repeater Jamming

Huan

Dai

Luo

et al. 2019

Sensors

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The interrupted sampling repeater jamming (ISRJ) is considered an efficient deception method of jamming for coherent radar detection. However, current countermeasure methods against ISRJ interference may fail in detecting weak echoes, particularly when the transmitting power of the jammer is relatively high. In this paper, we propose a novel countermeasure scheme against ISRJ based on Bayesian compress sensing (BCS), where stable target signal can be reconstructed over a relatively large range of signal-to-noise ratio (SNR) for both single target and multi-target scenarios. By deriving the ISRJ jamming strategy, only the unjammed discontinuous time segments are extracted to build a sparse target model for the reconstruction algorithm. An efficient alternate iteration is applied to optimize and solve the maximum a posteriori estimate (MAP) of the sparse targets model. Simulation results demonstrate the robustness of the proposed scheme with low SNR or large jammer ratio. Moreover, when compared with traditional FFT or greedy sparsity adaptive matching pursuit algorithm (SAMP), the proposed algorithm significantly improves on the aspects of both the grating lobe level and target detection/false detection probability.

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Resistance against spot jamming by using pulse compression based on quadru-phase and frequency codes in radar systems

Azadegan

Soleimani

2020

Digital Signal Processing

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Band pass filter design against interrupted‐sampling repeater jamming based on time‐frequency analysis

Cited by 72 publications

References 27 publications

Interrupted-Sampling Repeater Jamming Suppression Based on Stacked Bidirectional Gated Recurrent Unit Network and Infinite Training

Interrupted-Sampling Repeater Jamming Suppression Based on Stacked Bidirectional Gated Recurrent Unit Network and Infinite Training

Bayesian Compress Sensing Based Countermeasure Scheme Against the Interrupted Sampling Repeater Jamming

Resistance against spot jamming by using pulse compression based on quadru-phase and frequency codes in radar systems

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