Analysis of Imaging Quality of New Laser Communication System on Missile in the Aerodynamic Environment

Jiang, Lun; Xin, Yu; Wang, Chao; Dai, Tianjun; Dai, Zhengshuang; Tong, Shoufeng

doi:10.1007/s10946-021-09952-7

Cited by 3 publications

(4 citation statements)

References 8 publications

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“…For the emission directions proposed in Equation (3), this study selected four typical emission angles, namely angles 1 to 4, as illustrated in Figure 3. Subsequently, the light field distribution is derived from Equations ( 4)- (6). Based on the phase distortion caused by flow field interference, corresponding phase screens are generated to filter the Gaussian beam, yielding the SNR expressed in Equation (8).…”

Section: Simulation Of Flow Fields and Beam Propagationmentioning

confidence: 99%

“…However, the complex environment within the atmosphere and the relative motion between different platforms poses significant challenges to the applications of wireless laser communication links. The propagation of laser signals in free space is subject to various interferences, such as atmospheric turbulence effects [2], atmospheric scattering effects [3], and aero-optical effects [4][5][6]. Also, the relative motion and mechanical vibrations can also lead to errors in laser beam pointing [7,8].…”

Section: Introductionmentioning

confidence: 99%

“…An aero-optical simulation of a hemispherical cylindrical turret has been performed, using a Shack-Hartmann sensor to measure and evaluate the variation in the optical path difference caused by the aero-optical effect at different angles [5]. The aero-optics effects suffered by the laser communication equipment on surface-to-air missiles have been studied, and the beam path difference under different motion states has been evaluated by means of flow field modeling [6]. Moreover, numerous wind tunnel experiments and numerical studies on the aerodynamic optical effects of laser turrets have been carried out with different shapes [12,13].…”

Section: Introductionmentioning

confidence: 99%

“…Among these studies, it was found that the flow field structures are tightly related to the shape of the optical system. So far, numerous optical windows have been used in aerodynamic flow fields, including flat optical windows mounted on the side sides of fuselages [16] and optical hoods that open on the side of cones [6]. These structures are not susceptible to wind resistance, making the installation of refrigeration equipment simple.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Impact of Motion Characteristics of Airborne Platforms on the Performance of Space Laser Communication Links

Zhang,

Gao,

Liu

et al. 2024

Photonics

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When a platform carrying a space laser communication system moves through the atmosphere, the relative motion of the turret and the air produces fluctuations in the air density, which affects the beam propagation, and, hence, the laser communication performance. In this paper, we propose a performance analysis method for the space laser communication link to the airborne platform. By employing this method, which is based on a flow field simulation, we are able to determine the laser link’s communication performance curves for various flying situations. At an altitude of 5 km and a signal-to-noise ratio (SNR) of 10 dB for the laser communication link, the bit error rate (BER) under a flight speed of 0.4 Mach is 5.1×10−4. With each 0.1 Mach increase in speed, the BER decreases by approximately 6×10−5. If the flight speed is 0.8 Mach and the flight altitude increases from 5 km to 10 km, the BER decreases from 7.26×10−4 to 1.89×10−4, but the system becomes more sensitive to changes in flight speed. Under the same flight altitude conditions, the beam spot on the downwind side is more affected by airflow, resulting in a general increase in the BER by approximately one order of magnitude, compared to the upwind side.

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Section: Simulation Of Flow Fields and Beam Propagationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Impact of Motion Characteristics of Airborne Platforms on the Performance of Space Laser Communication Links

Zhang,

Gao,

Liu

et al. 2024

Photonics

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Introduction to the Special Section “Lasers, Communications, and Intense Data Processing”

Bykovsky

2021

J Russ Laser Res

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Wavefront reconstruction method for aero-optical distortion based on compressed sensing

Tian

Qiu

et al. 2022

J. Opt. Soc. Am. A

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The wavefront sensor plays an important role in the adaptive optics (AO) system for aero-optical distortion correction. However, the bandwidth of the current data interfaces of wavefront sensors, as one of the key factors, limits applications of the AO system in extremely high-frequency aero-optical distortion correction, leading to unsatisfactory performance. In this paper, a framework for wavefront data compression using compressed sensing is established to improve the correction ability of the AO system, and a disturbed Zernike gradient dictionary (DZGD) learning over the k-singular value decomposition algorithm is proposed for achieving good performance in the compression of aero-optical wavefront data. Based on the proposed DZGD, a method for aero-optical distortion data compression and wavefront reconstruction is developed that can efficiently reduce the amount of data in the information channel without degradation of the correction effect in aero-optical distortion correction. The compressibility of aero-optical distortions over the DZGD is analyzed in detail by numerical simulations. In addition, the selection criteria of the measurement matrix and the anti-noise characteristic of the method are also discussed. Data compression using our method is feasible and highly adaptable in the correction of aero-optical distortions, and exhibits stronger resistance against detector noise compared with using the conventional dictionary.

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Analysis of Imaging Quality of New Laser Communication System on Missile in the Aerodynamic Environment

Cited by 3 publications

References 8 publications

Impact of Motion Characteristics of Airborne Platforms on the Performance of Space Laser Communication Links

Impact of Motion Characteristics of Airborne Platforms on the Performance of Space Laser Communication Links

Introduction to the Special Section “Lasers, Communications, and Intense Data Processing”

Wavefront reconstruction method for aero-optical distortion based on compressed sensing

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