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Received Signal Strength Reduction Analysis Based on the Wavelet Model in Intersatellite Laser Communications

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3 Author(s)
Wanqing Xie ; Nat. Key Lab. of Tunable Laser Technol., Harbin Inst. of Technol., Harbin, China ; Liying Tan ; Jing Ma

The performance of intersatellite laser communication system can be affected by optical antenna deformations. A deformation model is established based on wavelet analysis for diversified deformations caused by processing technique and complex environment of the outer space. Numerical analyses show that the reconstruction error of a localized irregular deformation by wavelet could achieve 10-12 level, which is far better than Zernike polynomials to some extend. Relationships between diversified antenna deformations and the effect on received signal strength are derived based on the model. According to simulation results, the effect of deformation on received signal strength increases with the dilation factor of the model, decreases with the shift factor of the model, and tends to increase with irregular fluctuations with the linear increase of wavelet coefficient of the model. This study may be of some help in the design of intersatellite laser communication systems.

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Lightwave Technology, Journal of  (Volume:29 ,  Issue: 15 )