A Joint Estimation Method for PN Sequence Period of BOC Signals

doi:10.3969/j.issn.1000-1093.2020.08.009

Abstract

Abstract: Binary offset carrier (BOC) can greatly improve the anti-interception performance and anti-jamming capacity，which is widely used in secure communication system.The accurate estimation of pseudo noise(PN) code sequence period for BOC signals supports the subsequent signal processing.On the basis of analyzing the characteristic of auto-correlation function， a Joint estimation method for PN sequence period of BOC signals is proposed. The proposed method can eliminate the influences of the carrier component and noises by introducing the orthogonal two-way to the traditional sepctrum reprocessing.The PN sequence period at low signal-to-noise ratio(SNR) can be estimated by getting the autocorrelation function(ACF) of PN sequence without carrier and analyzing the discrete spectral line.The simulated results show that the proposed estimation method can accuately estimate the PN sequemce period at low SNR，and can promote 3 dB SNR tolerance compared to the traditional estimation method.

Key words: binaryoffsetcarriersignal, pseudonoisecodesequenceperiodestimation, orthogonaltwo-way, secondaryspectrum

CLC Number:

TN975

ZHANG Xiaoyu， FENG Yongxin， QIAN Bo. A Joint Estimation Method for PN Sequence Period of BOC Signals[J]. Acta Armamentarii, 2020, 41(8): 1549-1557.

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