基于NFM-BOK波形的低检测概率通信技术

doi:10.12305/j.issn.1001-506X.2023.12.34

Abstract

Abstract:

A new low probability of detection (LPD) communication method called noise frequency modulation-binary orthogonal keying (NFM-BOK) is proposed to address the issue of significant convergence characteristics in the communication transform domain of LPD waveforms, such as direct sequence spread spectrum (DSSS) and chirp spread spectrum (CSS), which can significantly affect LPD performance. The goal is to minimize the convergence characteristics in the communication waveform's transform domain at a given signal-to-noise ratio (SNR) to meet the bit error rate (BER) requirements. The NFM-BOK communication technology uses noise frequency modulation (NFM) as the waveform basis and BOK as the information payload method. The NFM-BOK's BER performance, power spectrum domain, and cyclic correlation domain convergence characteristics are focused on studying, with direct sequence-binary phase shift keying (DS-BPSK) as a comparison. Theoretical analysis and simulation results show that compared to DS-BPSK, the NFM-BOK communication system has similar noise resistance performance, while the convergence characteristics in the power spectrum domain and cyclic correlation domain at the same SNR corresponding to the same BER are significantly reduced.

Key words: low probability of detection (LPD), noise frequency modulation (NFM) communication, power spectrum detection, cyclic spectrum detection, convergence coefficient

CLC Number:

TN973.2

Zhiguo SUN, Yupeng SHA, Xiaoyan NING. Low detection probability communication technology based on NFM-BOK waveform[J]. Systems Engineering and Electronics, 2023, 45(12): 4030-4039.

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References 20

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信号	增益
信号	30	126	254	510
DS-BPSK	-0.3	-6.5	-9.8	-12.8
NFM-BOK	2.6	-3.2	-6.3	-9.5

信号	参数	增益
信号	参数	30	126	254	510
DS-BPSK	SNR/dB	-0.30	-6.50	-9.80	-12.80
DS-BPSK	聚敛系数	49.65	24.91	16.04	9.53
NFM-BOK	SNR/dB	2.60	-3.20	-6.30	-9.50
NFM-BOK	聚敛系数	28.44	8.05	5.42	3.92

信号	参数	增益
信号	参数	30	126	254	510
DS-BPSK	SNR/dB	-0.3	-6.5	-9.8	-12.8
DS-BPSK	聚敛系数	4.89	4.16	3.53	2.84
NFM-BOK	SNR/dB	2.6	-3.2	-6.3	-9.5
NFM-BOK	聚敛系数	1.64	1.17	0.75	0.27

Low detection probability communication technology based on NFM-BOK waveform

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