Design and Characteristic Analysis of Multicarrier Chaotic Phase Coded Radar Pulse Train Signal

Huang, Qiongdan; Li, Yong; Zeng, Yaoping; Fu, Yuzhuo

doi:10.1155/2014/724294

Cited by 6 publications

(4 citation statements)

References 9 publications

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“…The optimization problem for LPI radar waveform design against a summation detector based on FFT filter bank, as denoted by (15), lacks the capability to construct a fuzzy function for the waveform. This limitation prevents the guarantee of certain desirable properties, such as a lower integrated sidelobe level (ISL).…”

Section: Optimization Problemmentioning

confidence: 99%

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LPI Sequences Optimization Method against Summation Detector Based on FFT Filter Bank

Liu,

Guo,

Xiong

et al. 2024

Remote Sensing

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Waveform design is a crucial factor in electronic surveillance (ES) systems. In this paper, we introduce an algorithm that designs a low probability of intercept (LPI) radar waveform. Our approach directly minimizes the detection probability of summation detectors based on FFT filter banks. The algorithm is derived from the general quadratic optimization framework, which inherits the monotonic properties of such methods. To expedite overall convergence, we have integrated acceleration schemes based on the squared iterative method (SQUAREM). Additionally, the proposed algorithm can be executed through fast Fourier transform (FFT) operations, enhancing computational efficiency. With some modifications, the algorithm can be adjusted to incorporate spectral constraints, increasing its flexibility. Numerical experiments indicate that our proposed algorithm outperforms existing ones in terms of both intercept properties and computational complexity.

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Section: Optimization Problemmentioning

confidence: 99%

“…The frequency shortcut [12,13], pseudo-random [14], and complex waveform modulation techniques [15] are employed with the aim of reducing the interception probability of radar signatures. However, these techniques also inadvertently increase the processing complexity of the reconnaissance system.…”

Section: Introductionmentioning

confidence: 99%

LPI Sequences Optimization Method against Summation Detector Based on FFT Filter Bank

Liu,

Guo,

Xiong

et al. 2024

Remote Sensing

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show abstract

“…It achieves more balanced effects in three aspects: the main-to-sidelobe ratio in the ambiguity function, envelope fluctuation control, and spectrum utilization. Moreover, due to the flexibility and unpredictability of subcarrier and phase coding patterns, the MCPC-OFDM signal has a strong anti-jamming performance [20,21].…”

Section: Introductionmentioning

confidence: 99%

A Novel Radar Waveform Design for Anti-Interrupted Sampling Repeater Jamming via Time-Frequency Random Coded Method

Ji¹,

Luo²,

Duan³

et al. 2020

PIER M

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According to the orthogonality of each sub-carrier in the multi-carrier phase-coded (MCPC) signal, this paper focuses on anti-interrupted sampling repeater jamming (ISRJ) and creatively proposes a novel radar signal based on time-frequency random coded (TFRC) method, namely TFRC-MCPC signal. Based on the perspective of waveform design, the TFRC-MCPC signal adopts a chaotic sequence with good pseudo-random to code each chip in time-domain and each subcarrier in frequencydomain. The TFRC method increases the pseudo-randomness of radar waveform pulses and reduces the correlation between radar echo and ISRJ, thereby effectively suppressing the interference of false targets. The TFRC-MCPC method and common filter design methods do not conflict with each other and can be used in combination. The simulation experiment results show that under the typical parameters described in the paper, compared with the traditional MCPC signal and LFM signal, the signaljamming ratio (SJR) improvement factor of the TFRC-MCPC signal is optimized by 1-2 dB after pulse compression, which verifies its feasibility and effectiveness.

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“…In this method, phase modulation waveform can gain more target information and improve extended target detection performance. Gong et al propose that phase modulation can minimize the SCNR loss by minimizing the mean square spectrum difference between the optimal waveforms, and the algorithm can improve the overall detection performance of the radar system [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

LWS-Based Time-Domain Synthetic Algorithm with Constant Amplitude in Radar Transmit Waveform

Wang

Xin

2020

Mobile Information Systems

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As the working electromagnetic environment of radar is becoming more and more complex, the research on single-target problem can no longer meet the actual needs. Therefore, this paper changes single-target problem into multitarget problem based on the traditional water-filling method. In order to better meet the actual environment and requirement, this paper proposes a new algorithm with phase factor added based on the general water-filling algorithm. A time-domain synthetic algorithm based on the linear weighted summation (LWS) method is proposed. The minimum mean square error (MMSE) is used to measure the proximity between the radar multitarget optimal transmit waveform algorithm and the time-domain synthetic algorithm. The MMSE-based cost function is a nonlinear least square error estimation problem, and the time-domain waveform can be obtained after solving it. Simulation results show that the energy spectrum density (ESD) of the synthetic signal after adding the phase is very close to the optimal energy spectrum density of LWS algorithm in three cases. The time-domain synthetic algorithm based on signal-to-interference-plus-noise ratio (SINR) has better detection and recognition performance than that based on mutual information (MI).

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Design and Characteristic Analysis of Multicarrier Chaotic Phase Coded Radar Pulse Train Signal

Cited by 6 publications

References 9 publications

LPI Sequences Optimization Method against Summation Detector Based on FFT Filter Bank

LPI Sequences Optimization Method against Summation Detector Based on FFT Filter Bank

A Novel Radar Waveform Design for Anti-Interrupted Sampling Repeater Jamming via Time-Frequency Random Coded Method

LWS-Based Time-Domain Synthetic Algorithm with Constant Amplitude in Radar Transmit Waveform

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