ECCM Schemes against Deception Jamming Using OFDM Radar with Low Global PAPR

Wang, Xinhai; Zhang, Gong; Wang, Xiangmin; Song, Qingqing; Wen, Fangqing

doi:10.3390/s20072071

Cited by 6 publications

(5 citation statements)

References 32 publications

(37 reference statements)

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“…For achieving the second goal with two codes in CPG, using complementary sequences that are pairs of sequences with the useful property that their out-of-phase aperiodic autocorrelation coefficients sum to zero [21], would be the optimal solution. However, in radar applications, due to the requirement of the high Pd, usually more than two pulses (codes) are used in the integration [14,15]. Our primary goal in the SBPC method is to eliminate or minimise the effect of the jammer via coherent integration.…”

Section: Smart Binary Phase-coding (Sbpc) Methodsmentioning

confidence: 99%

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Smart binary phase‐coding for pulse‐compression radar: An electronic protection technique against repeater jamming

Yıldırım,

Kiranyaz

2024

IET Wireless Sensor Systems

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Nowadays, modern radar systems increase their target detection capabilities by processing pulses coherently. On the other hand, digital radio frequency memory‐based modern jammers have the ability to work coherently and can deceive radars even with a very low effective radiated power. These jammers, which have the capability of storing the radar's pulse, can use the previous pulses that they have stored in their memory during the electronic deception, without waiting for the last pulse of the radar, in other words, before the new pulse is received. If the radar does not change its parameters from pulse to pulse, such smart jamming techniques applied in this way can be very effective. In this article, the authors propose to use a smart binary phase‐coding method for pulse compression radar as an electronic protection technique against repeater jamming. This approach further improves the target detection capability of modern radar systems, which use coherent integration in the receiver. The proposed method can provide high protection against digital radio frequency memory‐based repetitive range deception techniques without compromising the radar's target detection capability. In the simulations, the traditional approach in which the same code is used without changing from pulse‐to‐pulse, and the approach using code sets obtained by the smart binary phase‐coding method in intra‐pulse modulation are compared. The results show that the proposed method can significantly improve the isolation against deception jamming and the target detection capability simultaneously.

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Section: Smart Binary Phase-coding (Sbpc) Methodsmentioning

confidence: 99%

“…In Ref. [14], an orthogonal frequency division multiplexing (OFDM) radar is proposed. To suppress the range deception jamming and the joint range‐velocity deception jamming, the phase codes of the subcarriers belonging to the OFDM pulses are optimised to minimise the jamming power.…”

Section: Smart Binary Phase‐coding (Sbpc) Methodsmentioning

confidence: 99%

Smart binary phase‐coding for pulse‐compression radar: An electronic protection technique against repeater jamming

Yıldırım,

Kiranyaz

2024

IET Wireless Sensor Systems

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“…x is a generalized concept, which does not correspond to any pulse in the transmitted coding signal. In order to make ( 17) has a solution, we must ensure that the rank of the observation matrix is greater than or equal to the complete echo length N , which is shown in (20).…”

Section: Echo Decoding Methods Of Cpc-sarmentioning

confidence: 99%

Method of High Signal-to-Noise Ratio and Wide Swath SAR Imaging Based on Continuous Pulse Coding

Wei

Yang

et al. 2022

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

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In synthetic aperture radar (SAR), increasing the pulse width of signal is an effective way to achieve high signal-to-noise ratio (SNR) imaging. However, when the pulse repetition frequency (PRF) is fixed, increasing the pulse width will reduce the maximum unambiguous swath width of SAR. In order to solve this contradiction, a method based on continuous pulse coding (CPC) which increases the average transmit power by multiple pulses with varying high PRF is proposed in this paper. Due to the small interval between pulses, the echo will have range ambiguity and occlusion problems. To obtain the complete echo, we firstly use the form of CPC signal and the swath width of radar to construct a linear-equation-set to model the ambiguous echo of each receiving window. Next, the established linear-equations are split according to the distribution law of receiving window. Finally, the echo energy accumulation of multiple pulses is accomplished by solving the split sub-linear-equations. Therefore, the echo with both swath width corresponding to narrow pulse and high SNR corresponding to wide pulse is obtained to realize high signal-to-noise ratio and wide swath (HSNR-WS) SAR imaging. The experimental results have confirmed the effectiveness of the method proposed in this paper.Index Terms-Continuous pulse coding (CPC); decoding; high signal-to-noise ratio and wide swath (HSNR-WS); synthetic aperture radar (SAR).

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“…The ECCM techniques such as pulse diversity, polarization character, motion function, DRFM quantization error, and target detection system in the presence of interference ensure that no single radar is tricked [8], [10]- [14]. In [15], an efficient ECCM approach for countering the very high-power ECM using an orthogonal frequency division multiplexing (OFDM) radar is presented and analyzed. Here, the phase codes of the sub-carriers belonging to the OFDM pulses are tuned to limit the jamming strength to suppress range deception and combined range-velocity deception jamming [15].…”

Section: Introductionmentioning

confidence: 99%

“…In [15], an efficient ECCM approach for countering the very high-power ECM using an orthogonal frequency division multiplexing (OFDM) radar is presented and analyzed. Here, the phase codes of the sub-carriers belonging to the OFDM pulses are tuned to limit the jamming strength to suppress range deception and combined range-velocity deception jamming [15].…”

Section: Introductionmentioning

confidence: 99%

Sequential Fusion Based Approach for Estimating Range Gate Pull-Off Parameter in a Networked Radar System: An ECCM Algorithm

2022

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Networked radar is an emerging and effective alternative to traditional radar systems to provide improved performance by fusing information from multiple radars. Further, networked radar systems (NRS) have found numerous deployments in military and civilian infrastructures in recent years. Electronic countermeasures (ECM) like jamming, Range Gate Pull-Off (RGPO), and Velocity Gate Pull-Off (VGPO) generally pose a high risk to the radar systems by injecting intentional interference. This paper proposes networked radar to detect the RGPO ECM attack and estimate the range gate deception parameter of the deceived local track in an NRS. Each radar comprises a local tracker to provide the local estimates (updated state and updated covariance), and these estimates are then sent to the fusion node. Thereafter, a track-to-track association (T2TA) is formulated at the fusion node to detect the deceived tracks using all the available local tracks. For the deceived track, the pseudo-measurements are created using the inverse Kalman filter-based tracklets. All the local tracks except deceived track are compensated and sequentially fused to create a reference measurement. After that, the deception parameter of the deceived track is estimated by using pseudo-measurement and the reference measurement by employing the recursive least square estimator (RLSE). In addition, the proposed algorithm is analyzed for single and multiple RGPO based ECM scenarios. Further, the Cramer Rao Lower Bound (CRLB) for the proposed methodology is derived. The results are quantified with a Position Root Mean Square Error (PRMSE), CRLB, innovation test, normalized estimation error squared (NEES) test, and confidence interval. The simulation results demonstrate that the proposed estimation technique provides good performance in the presence of all the local tracks are being attacked by RGPO ECM. Besides, it is evident from the results that estimator efficiency is falling below the 5% tail probability of the chi-square distribution.INDEX TERMS Cramer-Rao lower bound, electronic counter countermeasure, networked radar, range gate pull-off, sequential fusion, tracklets

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ECCM Schemes against Deception Jamming Using OFDM Radar with Low Global PAPR

Cited by 6 publications

References 32 publications

Smart binary phase‐coding for pulse‐compression radar: An electronic protection technique against repeater jamming

Smart binary phase‐coding for pulse‐compression radar: An electronic protection technique against repeater jamming

Method of High Signal-to-Noise Ratio and Wide Swath SAR Imaging Based on Continuous Pulse Coding

Sequential Fusion Based Approach for Estimating Range Gate Pull-Off Parameter in a Networked Radar System: An ECCM Algorithm

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