Research on Satellite Concealment Communication Method Based on WFRFT

SANG Zhiang; LIU Ya’nan; LIU Ziwei; HU Yixin; ZHANG Gengxin

doi:10.11999/JEIT200922

Volume 44 Issue 1

Jan. 2022

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Article Navigation > Journal of Electronics & Information Technology > 2022 > 44(1): 339-345

SANG Zhiang, LIU Ya’nan, LIU Ziwei, HU Yixin, ZHANG Gengxin. Research on Satellite Concealment Communication Method Based on WFRFT[J]. Journal of Electronics & Information Technology, 2022, 44(1): 339-345. doi: 10.11999/JEIT200922

Citation:

SANG Zhiang, LIU Ya’nan, LIU Ziwei, HU Yixin, ZHANG Gengxin. Research on Satellite Concealment Communication Method Based on WFRFT[J]. Journal of Electronics & Information Technology, 2022, 44(1): 339-345. doi: 10.11999/JEIT200922

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Research on Satellite Concealment Communication Method Based on WFRFT

doi: 10.11999/JEIT200922

1.
College of Telecommunications & Information Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210003, China
2.
College of Information and Communication Engineering, Harbin Engineering University, Harbin 150001, China
3.
China Research Institute of Radio Wave Propagation, Qingdao 266107, China

Funds: The National Natural Science Foundation of China (61801445)

Received Date: 2020-10-28
Rev Recd Date: 2021-05-22

Available Online: 2021-07-15

Publish Date: 2022-01-10

Abstract

Abstract

Satellite signal concealment technology protects the safety of signal waveform by using signals with high power and specific parameter characteristics. However, with the development of modulation recognition and Successive Interference Cancellation (SIC) technology, the cover signal using conventional modulation methods can be cracked by non-cooperative receivers. In order to meet the safety communication requirements of portable satellite communication terminals, the idea of using local signal copies for self-interference cancellation in Paired Carrier Multiple Access (PCMA) is used for reference. This paper proposes a satellite secure communication method suitable for portable terminals, and introduces Weighted-type FRactional Fourier Transform (WFRFT) as a modulation method to mask the signal, thereby increase the difficulty of non-cooperative parties in identifying and demodulating the cover signal. Simulation shows that the method proposed in this paper improves the security of signal transmission, and the loss of the system's bit error rate is within an acceptable range after signal separation, which is suitable for practical use.
- Weighted-type FRactional Fourier Transform (WFRFT),
- Parameter estimation,
- Signal separation,
- Satellite overlay communication

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References(19)

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