Research on distortion wavefront prediction technique for laser communication system based on LSTM network

Ning Wang; Licheng Zhu; Shuai Ma; Ping Yang; Weiming Xie

doi:10.1117/12.2623650

27 March 2022 Research on distortion wavefront prediction technique for laser communication system based on LSTM network

Ning Wang, Licheng Zhu, Shuai Ma, Ping Yang, Weiming Xie

Author Affiliations +

Proceedings Volume 12169, Eighth Symposium on Novel Photoelectronic Detection Technology and Applications; 121693D (2022) https://doi.org/10.1117/12.2623650
Event: Eighth Symposium on Novel Photoelectronic Detection Technology and Applications, 2021, Kunming, China

Abstract

The transmission of laser signals in laser communication systems is affected by atmospheric turbulence, which can cause optical wavefront distortion and degrade communication performance. Adaptive optics (AO) technology can compensate for atmospheric turbulence in real time, however, the time delay inherent in the AO system will cause the compensation wavefront to lag significantly behind the aberration wavefront change when correcting the aberration wavefront with high time frequency, which will easily increase the bit error rate (BER) of the laser communication system and lead to communication failure. At present, it is difficult for existing methods to effectively solve the correction time delay problem faced by AO technology in laser communication systems with high time frequency atmospheric turbulence distortion wavefront. In this paper, a long short-term memory (LSTM) based distortion wavefront prediction model for laser communication systems is proposed. In this model, multi-frame historical wavefront is used to predict the future wavefront to be corrected. The simulation results show that the model has a good prediction effect on atmospheric turbulence wavefront with different aberrations, which is expected to be used for the prediction and correction of high time frequency wavefront aberrations in real laser communication systems.

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Ning Wang, Licheng Zhu, Shuai Ma, Ping Yang, and Weiming Xie "Research on distortion wavefront prediction technique for laser communication system based on LSTM network", Proc. SPIE 12169, Eighth Symposium on Novel Photoelectronic Detection Technology and Applications, 121693D (27 March 2022); https://doi.org/10.1117/12.2623650

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