Performance analysis of FSO transmission of double watermarked image over the Double Rician turbulence channel

Performance analysis of double watermarked image transmission over the double Rician turbulence FSO channel will be carried out in this paper. First, we will considered the importance of copyright, robustness of watermark in FSO transmission and presented some algorithms for watermarking. Second, we will propose the Double Rician turbulence channel model, convenient for modeling both large-scale and small-scale irradiance fluctuations effects on FSO transmission. Further, we will observe standard performance criterions of reconstructed image, such are Bit Error Rate (BER), Mean Square Error (MSE) and Peak Signal-to-Noise Ratio (PSNR) versus parameters of observed FSO link: K1 and K2 in order to determine whether the double watermarked image can be successfully transmitted through FSO channel for corresponding values of link parameters.