Research on Mobile Underwater Acoustic Spread Spectrum Communication Technology Based on Double-Differential Coded

2021 ◽  
Author(s):  
Fen Zhou ◽  
Wenbo Zhang ◽  
Huiming Chen ◽  
Guang Yang
Keyword(s):  
Communication Technology ◽  
Spread Spectrum ◽  
Spread Spectrum Communication ◽  
Underwater Acoustic

Image Copyright Protection Watermark Algorithm Based on Spread Spectrum Technology

2014 ◽  
Vol 602-605 ◽  
pp. 3272-3277
Author(s):  
Chang Bao Wei
Keyword(s):  
Ultimate Strength ◽  
Digital Watermarking ◽  
Communication Technology ◽  
Copyright Protection ◽  
Spread Spectrum ◽  
Spread Spectrum Communication ◽  
Chinese Library Classification ◽  
Load Intensity ◽  
Watermark Algorithm

With the application of digital watermarking based on spread spectrum communication technology and the difficult control characteristics of watermark load intensity and invisibility, this paper considers the best compromise between watermark robustness and invisibility factors, and puts forward a digital watermarking algorithm using spread spectrum communication technology. By ultimate strength loading watermark test, the algorithm is verified to have good robustness. Chinese library classification number: TP391 literature identifier: A

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