Simulation study on influence of tracking jitter on far field in turbulent atmospheric transmission

Yang Xinxin; Wang Jihong; Ren Ge

doi:10.11884/HPLPB202032.190348

Volume 32 Issue 6

May 2020

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Article Navigation > High Power Laser and Particle Beams > 2020 > 32(6): 061001

Yang Xinxin, Wang Jihong, Ren Ge. Simulation study on influence of tracking jitter on far field in turbulent atmospheric transmission[J]. High Power Laser and Particle Beams, 2020, 32: 061001. doi: 10.11884/HPLPB202032.190348

Citation:

Yang Xinxin, Wang Jihong, Ren Ge. Simulation study on influence of tracking jitter on far field in turbulent atmospheric transmission[J]. High Power Laser and Particle Beams, 2020, 32: 061001. doi: 10.11884/HPLPB202032.190348

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Simulation study on influence of tracking jitter on far field in turbulent atmospheric transmission

doi: 10.11884/HPLPB202032.190348

Yang Xinxin^{1, 2, 3
,},
Wang Jihong^{1, 2
,
,},
Ren Ge^{1, 2, 3}

1.
Key Laboratory of Optical Engineering, Chinese Academy of Sciences, Chengdu 610209, China
2.
Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu 610209, China
3.
University of Chinese Academy of Sciences, Beijing 100049, China

Received Date: 2019-09-11
Rev Recd Date: 2020-03-29
Publish Date: 2020-05-12

Abstract

Abstract

The influence of tracking jitter on the far-field spot of turbulent atmospheric transmission is analyzed. Based on Maxwell's electromagnetic field theory, the Fried coherence diameter is used to describe the atmospheric turbulence, and the far-field expression of the transmitted beam due to optical axis deviation caused by tracking jitter is derived. The method of phase screen is used to simulate the tilt phase caused by tracking jitter and phase modulation caused by atmospheric refractive index fluctuation. Fast Fourier Transform Subharmonic Method is used to simulate the transmission process. The changes of miss distance of far-field spot under different tracking jitter and turbulence intensity and the echo probability of the simulated targets in different sizes are analyzed. The analysis results show that when the transmission distance is 10 km, the miss distance of far-field spot caused by strong turbulence can reach dozens of microradians. When the tracking jitter is large, the influence of turbulence on the miss distance is very small. Finally, for the simulation target of specific size, the control range of the transmission system tracking jitter is given.
- tracking jitter,
- atmospheric turbulence,
- power spectrum inversion method,
- miss distance

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References(10)

References

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