双极化卫星MP-WFRFT星座裂变安全传输技术

doi:10.19665/j.issn1001-2400.2020.03.017

Abstract

Abstract:

In order to improve the security transmission performance of dual-polarized satellites, a constellation splitting security transmission system based on the multi-parameter weighted-type Fractional Fourier Transform (MP-WFRFT) is proposed. By analyzing the time-frequency characteristics of signals, the constellation splitting function is constructed and solved by the Genetic Algorithm (GA). The constellation splitting criteria of the MP-WFRFT in the two-dimensional surface and three-dimensional sphere are mainly explored. Simulation results show that the splitting pattern is determined by the ratio of time-domain terms on the MP-WFRFT and the transmitting signal can be camouflaged by setting different time-domain terms ratio constrains to prevent the eavesdropper from acquiring the correct message. The error in the transform parameter can improve the security performance. The larger the parameter error of the MP-WFRFT is, the higher secrecy capacity can be achieved, which verifies the rationality and effectiveness of the proposed scheme.

Key words: multi-parameter weighted-type fractional Fourier transform, polarization modulation, constellation splitting, secrecy capacity

CLC Number:

TN911.7

WANG Haobo,DA Xinyu,XU Ruiyang,LIANG Yuan,NI Lei,ZHANG Hongwei. Constellation splitting security transmission technology based on the multi-parameter weighted-type fractional Fourier transform for dual-polarized satellites[J].Journal of Xidian University, 2020, 47(3): 121-127.

Figures/Tables 8

References 14

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参数	k=0.0	k=0.2	k=0.5	k=0.7	k=1.0
α	2.804522	2.795249	2.231592	2.516006	3.221957
MV	[15, 86, 29, 12]	[63, 8, 30, 87]	[76, 64, 64, 100]	[99, 26, 71, 19]	[61, 45, 27, 29]
NV	[29, 80, 94, 94]	[49, 25, 87, 71]	[81, 24, 90, 48]	[75, 76, 25, 73]	[40, 18, 29, 57]

Constellation splitting security transmission technology based on the multi-parameter weighted-type fractional Fourier transform for dual-polarized satellites

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