Analysis of the Stability of Bidirectional Beam Tracking in Inter-Satellite Optical Communication

Feng, 武凤 Wu; Siyuan, 于思源 Yu; Jie, 周洁 Zhou; Jing, 马晶 Ma; Liying, 谭立英 Tan

doi:10.3788/cjl201340.1105003

Cited by 6 publications

(3 citation statements)

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“…Take the outgoing beam for example, assuming that the rotation angle of the azimuth axis is θ az, z and the rotation angle of the elevation axis is θ el, z , the outgoing laser transmission process of the beam in the axis is as follows: azimuth axis → FM2 → elevation axis → FM1 → exit. Then, we can write out the error transformation formula: (6) where T el and T az are the unit matrices (7) while R az and R el denotes the axis error transmit matrix which can be derived out according to formula (2):…”

Section: Axis Assembly Errormentioning

confidence: 99%

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Optical path pointing error and coaxiality analysis of APT system of space laser communication terminal

Zhang¹,

Ruan²,

Han³

2021

Optica Applicata

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Precision beam pointing is the key indicator for APT (acquisition, pointing and tracking) system in space laser communication. The laser travels inside the optical system and the pointing vector will be affected by an assembly error of the axis and reflectors. In this paper, the model of the optical path pointing error and coaxiality error induced by the assembly error are established; the error distribution is given and a quantitative analysis is performed. The results show that the magnitude of pointing error is affected by the axis assembling error greatly but its distribution is susceptible to the reflector assembly error. Finally, the correction of coaxiality is performed and tested. The experimental results show that the coaxiality error can be greatly improved and the mean value of the coaxiality error of a beacon path and a signal path are 14 and 9.6 μrad, respectively, which meets the requirements. This work can provide guidance for design and assembly of the APT and contribute to the improvement of its pointing performance.

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Section: Axis Assembly Errormentioning

confidence: 99%

“…In the past, most research papers paid attention to atmospheric turbulence induced pointing error (PE) [6], detector angular error [7], wavefront error induced by structural deformation [8]. But the influence of the assembling error on PE has not been analyzed in detail.…”

Section: Introductionmentioning

confidence: 99%

Optical path pointing error and coaxiality analysis of APT system of space laser communication terminal

Zhang¹,

Ruan²,

Han³

2021

Optica Applicata

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“…间。除此之外， FDU 的再生光信号功能也可为长距离传输提供色散补偿 [14][15] 。卫星间相距遥远，星间链路存在周期性中断 [16] ，且光信号经过长距离传输之后会有较大的衰减 [17][18] [19] ，这些优点正好符合星上交换系统的现实需要。综合这两种节点的结构和星载交换系统复…”

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Research of On-Board Satellite Optical Switching Resource Reservation Protocol based on E-OBS Architecture

Ruixin¹,

Shanghong²,

Meng³

et al. 2015

激光与光电子学进展

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To meet the requirements of satellite laser switching network, such as fine robustness and high physical realizability, emulated-optical burst switching (OBS) is selected as the architecture of relay satellite, and an on-board resource reservation protocol, whose offset time is constant, is proposed combining the ground resource reservation methods. Traffic prediction is used to differentiate the data burst into single burst or burst stream according to the destination and quality of service (QoS), then resource reservation is accomplished successfully. To validate it, mathematic models of mean end-end delay, throughput, link utility and burst loss probability are established. The results of analysis and emulation show that the protocol can reduce the reconfiguration time and switching time of optical switch matrix through burst stream scheme, and decrease the complexity and cache size requirement through the E-OBS architecture, so the new resource reservation protocol meets the requirements of satellite laser communication.

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Pointing Coordinate System Error Correction Method for Integration of Laser Communication Terminal into Satellite

Ling

Guo

2018

Lecture Notes in Electrical Engineering

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Analysis of the Stability of Bidirectional Beam Tracking in Inter-Satellite Optical Communication

Cited by 6 publications

References 0 publications

Optical path pointing error and coaxiality analysis of APT system of space laser communication terminal

Optical path pointing error and coaxiality analysis of APT system of space laser communication terminal

Research of On-Board Satellite Optical Switching Resource Reservation Protocol based on E-OBS Architecture

Pointing Coordinate System Error Correction Method for Integration of Laser Communication Terminal into Satellite

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