A Underwater Acoustic Remote Control Technique for Inserting Linear Frequency Modulated Signals in a Single Frequency Carrier
BAI Zhongxin
ZHANG Xiaomin
ZHENG Kai
Abstract：In order to increase the concealment of the remote control system and reduce the artificial noise interference to the marine life and enhance the anti-noise performance of the algorithm,this paper takes into account the characteristics of the phase change rapidly in the remote underwater acoustic channel,the simplicity of the algorithm implementation and the processing gain of the algorithm problem,a remote control signal generation scheme for cyclically inserting linear frequency modulation(LFM)signals in BFSK carrier modulation is proposed. The non-coherent decoding method is carried out at the receiver by quadrature demodula?tion algorithm,and the anti-noise performance of the system is enhanced by using Turbo channel coding. The simulation results show that the scheme proposed in this paper has good spectral spread ability and anti-noise performance,compared with the BFSK 's non-coherent demodulation algorithm the performance of the scheme is improved about 2dB.
Keywords：cyclically insertingLFMquadrature demodulationchannel coding
Publication Date：2019-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 339-343 )