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- W2366090112 abstract "The influence of atmospheric attenuation and turbulence to laser transmission are profoundly analyzed.The Gaussian noise channel model is present.A robust image watermark algorithm is proposed based on multi-wavelets SPIHT and low density parity check codes(LDPC).The algorithm is applied in the atmospheric laser communication by Joint Source-Channel Coding(JSCC).The presented algorithm takes advantage of source coding efficiency and robustness of multi-wavelets SPIHT algorithm and low bit error performance of LDPC code.According to the importance of the encoded data in the redevelopment,a different level error correction channel coding is built.In the additive white Gaussian noise(AWGN) channel with PPM modulation,and the SNR of 14dB through the atmosphere laser channel,normalized correlation coefficient of the recovered watermark is 0.863.The presented algorithm has strong error correction performance in burst errors and random errors,so it is appropriate for complicated environment of atmospheric laser communication and confidentiality communication,and has good application prospect." @default.
- W2366090112 created "2016-06-24" @default.
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- W2366090112 date "2010-01-01" @default.
- W2366090112 modified "2023-09-24" @default.
- W2366090112 title "Research on Image Watermarking Applied to the Atmospheric Laser Communication" @default.
- W2366090112 hasPublicationYear "2010" @default.
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