Research on the SDIF Failure Principle for RF Stealth Radar Signal Design

Jia, Jinwei; Han, Zhen; Liu, Limin; Xie, Hui; Lv, Meng

doi:10.3390/electronics11111777

Cited by 5 publications

(8 citation statements)

References 15 publications

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“…After analysis, scholars have researched three aspects: 1 signal frequency-hopping design, time-varying pulse width, and pulse arrival angle deception [8,[26][27][28]; high-density pulse flow leads to the 3 failure of threshold function [10] and 5 sorting algorithm in real-time sequence search [13,29]. Therefore, the above three aspects are not studied in this paper.…”

Section: Sdif Sorting Failure Principlementioning

confidence: 99%

“…In the anti-interception strategy, radar realizes RF stealth mainly by power control of radiation sources and directional antennas [9]. The anti-sorting strategy is primarily through the anti-sorting signal design technique to achieve RF stealth [10], and the anti-identification strategy is mainly through the complex signal design. Even if the signal is intercepted and sorted, there is no relevant signal data in the radar database to match and identify the signal, failing to achieve RF stealth.…”

Section: Introductionmentioning

confidence: 99%

“…10 and T 20 are the central values of signal PRI; ∆T 1i and ∆T 2j are the increments of signal PRI and the elements of signal PRI variation sets ∆T 1 and ∆T 2 , namely ∆T 1i ∈ ∆T 1 , ∆T 2j ∈ ∆T 2 .…”

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confidence: 99%

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Research on the Sequential Difference Histogram Failure Principle Applied to the Signal Design of Radio Frequency Stealth Radar

et al. 2022

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As electronic warfare becomes the core of modern warfare, radio frequency (RF) stealth radar is becoming the focus of modern electronic warfare. The anti-sorting strategy of RF stealth radar is a new effective method of the anti-enemy electronic reconnaissance system. Hence, research on the failure mechanism of sorting algorithms has become the cornerstone of anti-sorting technology. In this paper, the mechanism of algorithm failure is studied because the SDIF algorithm is widely used in engineering practice throughout the whole workflow of the sequential difference histogram (SDIF) algorithm, from the estimation of pulse repetition interval (PRI) destroyed by the algorithm and algorithm analysis to the staggered signal. Firstly, the working steps of the SDIF histogram sorting algorithm are considered. Key steps of signal sorting by the algorithm are analyzed, and the failure principle of the sorting algorithm is proposed. It is pointed out that if the PRI signal center value of the two groups of radars is within the tolerance range of the sorting algorithm, when the two signal center values are not of the same order of magnitude, the difference is more than 10 times, and the signal variation is less than 30% of the center value, the sorting error of the algorithm for the radar signal is at least 25%. The sorting algorithm fails to sort signals. At the same time, for the sorting failure of the staggered signal, the sub-PRI design formula of the staggered signal is proposed, and the staggered signal satisfying the design formula can make the sorting algorithm invalid. Finally, the correctness of the SDIF failure principle is further verified by formula derivation, signal design simulation and experiment. The principle of sorting failure provides theoretical support and foundation for the design of anti-sorting RF stealth signal. The principle of sorting failure makes up for the shortcomings of random signal design and improves the design efficiency of RF stealth signal.

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Section: Sdif Sorting Failure Principlementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Research on the Sequential Difference Histogram Failure Principle Applied to the Signal Design of Radio Frequency Stealth Radar

et al. 2022

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“…In the present complex radar electronic countermeasure environment, RF stealth radar has excellent development potential due to its excellent anti-interception and anti-sorting performance. Anti-sorting signal design is an important development direction for RF stealth radar [ 6 , 32 ]. In addition, anti-PRI sorting signal design requires the relevant theoretical basis for the signal design.…”

Section: Motivations and Contributionsmentioning

confidence: 99%

Design of Multi-Parameter Compound Modulated RF Stealth Anti-Sorting Signals Based on Hyperchaotic Interleaving Feedback

Jia

Han

Liang

et al. 2022

Entropy

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Radio frequency (RF) stealth anti-sorting technology is a research hotspot in the radar field. In this study, the signal design principles of anti-cluster and anti-SDIF sorting were investigated for processes of clustering pre-sorting and sequence-difference-histogram main sorting. Then, in accordance with the signal design principle, a 2D interleaving feedback hyperchaotic system based on the cosine-exponential was designed. A method to modulate the pulse repetition interval (PRI) of the signal parameters and carrier frequency with wide intervals through the hyperchaotic system was developed. Finally, we verified the correctness of the signal design principle, the performance of the hyperchaotic system, and the anti-sorting performance of the designed signal using simulations. The results showed that the signal design principle could guide the signal design. The hyperchaotic system outperformed the classical 1D and 2D chaotic systems and the classical 3D Lorenz systems in terms of randomness and complexity. Anti-cluster sorting and anti-SDIF sorting could be realized by anti-sorting signals modulated by a hyperchaotic system, with the anti-SDIF sorting performance being better than that of the PRI random jitter signal.

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“…Therefore, radio frequency (RF) stealth radar has become a research hotspot in the radar field. According to the three detection stages of signal interception, sorting and identification of broadband real-time electronic reconnaissance equipment such as radar warning receivers, the corresponding radar RF stealth mainly includes anti-interception [ 5 , 6 , 7 ], anti-sorting [ 8 ] and anti-identification. Anti-sorting, referring to preventing an electronic reconnaissance system from separating each radar pulse sequence from a random and interleaved pulse flow, is an important breakthrough point for anti-electronic reconnaissance systems [ 9 ].…”

Section: Introductionmentioning

confidence: 99%

Chaotic Mapping-Based Anti-Sorting Radio Frequency Stealth Signals and Compressed Sensing-Based Echo Signal Processing Technology

Jia

Liu

Liang

et al. 2022

Entropy

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Radio frequency (RF) stealth anti-sorting technology can improve the battlefield survival rate of radar and is one of the research hotspots in the radar field. In this study, the signal design principle of anti-sequential difference histogram (SDIF) sorting was explored for the main sorting algorithm of the SDIF. Furthermore, we designed a piecewise linear chaotic system with interval number parameterization based on random disturbance and proposed a method to modulate the repetition period of widely spaced signal pulses using a chaotic system. Then, considering the difficulty of the traditional signal processing method to measure the velocity of the highly random anti-sorting signals designed in this paper, we used compressed sensing (CS) technology to process the echoes of the signals to solve the velocity and distance of the detection targets. Finally, simulation verification was performed from the correctness of the signal design principle, the performance of the chaotic system, the anti-sorting performance of the designed signals and the recovery and reconstruction performance of the signals by CS. The results show that: (a) the signal design principle presented in this paper can guide the signal design correctly; (b) the performance of the piecewise linear chaotic system with interval number parameterization is better than that of the classical one-dimensional chaotic system; (c) the anti-sorting signal modulated by the chaotic system can achieve anti-SDIF sorting, and the anti-sorting signals designed in this paper can be processed to obtain the velocity and distance of the targets.

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Research on the SDIF Failure Principle for RF Stealth Radar Signal Design

Cited by 5 publications

References 15 publications

Research on the Sequential Difference Histogram Failure Principle Applied to the Signal Design of Radio Frequency Stealth Radar

Research on the Sequential Difference Histogram Failure Principle Applied to the Signal Design of Radio Frequency Stealth Radar

Design of Multi-Parameter Compound Modulated RF Stealth Anti-Sorting Signals Based on Hyperchaotic Interleaving Feedback

Chaotic Mapping-Based Anti-Sorting Radio Frequency Stealth Signals and Compressed Sensing-Based Echo Signal Processing Technology

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