Simulation of spot detection under the influence of boundary layers and analysis of iterative correction methods

Zhili Zheng; Yiguo Li; Quanxi Liu; Tong Yue; Xintao Zheng

doi:10.1117/12.2691633

6 November 2023 Simulation of spot detection under the influence of boundary layers and analysis of iterative correction methods

Zhili Zheng, Yiguo Li, Quanxi Liu, Tong Yue, Xintao Zheng

Author Affiliations +

Proceedings Volume 12921, Third International Computing Imaging Conference (CITA 2023); 129213O (2023) https://doi.org/10.1117/12.2691633
Event: Third International Computing Imaging Conference (CITA 2023), 2023, Sydney, Australia

Abstract

Spot detection is of great importance for airborne laser communications and airborne laser weapons. However, due to the boundary layer created near the optical turret by aircraft flight, a wavefront distortion is generated, which ultimately affects the imaging quality. In this paper, the flow field near an optical turret with a planar window is simulated at high-speed using a numerical method. The wavefront aberrations are obtained by ray tracing and the spot images are compared for different flight altitudes, flight speeds and planar window orientations. Further, the convergence speed and correction effect of Wavefront Sensorless Adaptive Optics (WFSless AO) with different iterative control algorithms are compared. The simulation results show that the Accelerated Stochastic Parallel Gradient Descent (ASPGD) algorithm is well suited for the correction of wavefront aberrations caused by boundary layer effects.

Citation Download Citation

Zhili Zheng, Yiguo Li, Quanxi Liu, Tong Yue, and Xintao Zheng "Simulation of spot detection under the influence of boundary layers and analysis of iterative correction methods", Proc. SPIE 12921, Third International Computing Imaging Conference (CITA 2023), 129213O (6 November 2023); https://doi.org/10.1117/12.2691633

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