Primary Environment Influence Factors to Tracking Precision in Space-ground Laser Communication

Cheng, 韩成 Han; Baoxing, 白宝兴 Bai; Huamin, 杨华民 Yang; Shoufeng, 佟首峰 Tong; Jingtao, 范静涛 Fan; Lintao, 于林韬 Yu; Yi-feng, 朱一峰 Zhu

doi:10.3788/gzxb20103901.0089

Cited by 5 publications

(3 citation statements)

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“…In the control system of coarse-fine compound axis, the fine tracking control system cannot function when the tracking error of coarse tracking control system is bigger than that of fine tracking sensor detection field. When the tracking error of coarse tracking control system is smaller than that of fine tracking sensor detection field, the fine tracking control system enters the tracking status and further suppresses the residual error of the coarse tracking control system through the light closed loop, which is constituted by fine tracking sensor [9] . Thus, we made an improvement of ATP system coarse-fine compound-axis tracking control loop model, which is illustrated in …”

Section: The Atp System Modeling and Simulationmentioning

confidence: 99%

Simulation research on ATP system of airborne laser communication

Zhao

Huang

2015

SPIE Proceedings

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The compound axis tracking control circuits model of the ATP system was established and simulation was run on the tracking control performance of the ATP system. It was found through simulation that with the fixed coarse tracking error, the dynamic lag error in the coarse tracking servo system could be suppressed to 120μrad; and with the fixed fine tracking error, the dynamic lag error in the fine tracking servo system could be restrained to 2.73μrad, and the vibration residual could be controlled within 1.5μrad.

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Section: The Atp System Modeling and Simulationmentioning

confidence: 99%

Simulation research on ATP system of airborne laser communication

Zhao

Huang

2015

SPIE Proceedings

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“…In this paper, the object reference model is first order, set D(s)=Ts+1，N(s)=1； Equation becomes: 3) The selection of Lyapunov function Based on the Lyapunov stability theory [13] , combined with the stability requirements of FSM, Lyapunov function as follows:…”

Section: Derived Control Algorithm Modelmentioning

confidence: 99%

Adaptive algorithm research based on micro displacement driving mirror

Zhang¹

2016

Proceedings of the 2015 5th International Conference on Computer Sciences and Automation Engineering

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Acquisition, tracking and pointing(ATP)system is the core of high speed and large capacity of laser communication in atmosphere, spot jitter generated by the disturbances among long distance laser communication has seriously affected the precise alignment between laser communication terminals, and greatly reduces the stability of the communication link and quality. In order to suppress the facula dithering, improve the accuracy of target tracking, this paper proposes an improved fast steering mirror control method. Analyzes the features of self-adaptive control and conventional PID control, and discusses the advantage of composite control with the two algorithms, proposes model reference self-adaptive control algorithm of PID, according to the Lyapunov theory, and makes algorithm simulation analysis with the conventional PID and model reference self-adaptive and PID compound control and do closed-loop tracking experiment of actual facula dithering. The experimental results show that, the adaptive PID controller obtains the overshoot is 2%,rising time is 3ms,trackingaccuracy better than 2 microradian, overall better than the conventional PID control algorithm. Compared with the traditional PID control, control algorithm which is proposed in this paper has better inhibition of spot jitter.

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“…And the detection accuracy and velocity of the beacon deflection angle in the FPA determine the whole tracking system's tracking accuracy and velocity. However, the detection of the beacon deflection angle in fact is equivalent to the detection of the facular centroid on the detector's light-sensing surface in the FPA [1][2][3][4][5][6] .…”

Section: Introductionmentioning

confidence: 99%

Research on dynamic facula orientation deviation during tracking and pointing in the space laser communication

et al. 2011

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In order to study the influence of the time-varying turbulence to facular orientation precision when the facula is moving during the pointing and tracking process, a random phase screen is generated using modified inverse fourier transform to simulate atmospheric turbulence. And then the orientation deviation of the facular barycenter, the relation between the deviation and the facular position in the detector and the orientation precision of the facula is analyzed under different atmospheric turbulence intensity. The results indicate that at the presence of time-varying atmospheric turbulence, there is a deviation between actual translational amount of the facular barycenter and that of the barycenter detected by the charge-coupled device and it relates with the atmospheric turbulence intensity. And the dynamic facular orientation precision is found that it relates to the atmospheric turbulence intensity and the facular position in the detector.

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Primary Environment Influence Factors to Tracking Precision in Space-ground Laser Communication

Cited by 5 publications

References 0 publications

Simulation research on ATP system of airborne laser communication

Simulation research on ATP system of airborne laser communication

Adaptive algorithm research based on micro displacement driving mirror

Research on dynamic facula orientation deviation during tracking and pointing in the space laser communication

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