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A High-dynamic Wavelength Tracking and Millimeter-level Ranging Inter-satellite Laser Communication Link with Feedback-Homodyne Detection

Tian, Yang, Zhong, Jie, Lin, Xiaoxiang, Xiao, Pei, Yang, Haifeng, Zhong, Yu and Kang, Dongpeng (2019) A High-dynamic Wavelength Tracking and Millimeter-level Ranging Inter-satellite Laser Communication Link with Feedback-Homodyne Detection Applied Optics.

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Abstract

The Integrated Laser Communication/Ranging System, which uses coded signal as the ranging information carrier, is of great importance to the next large-capacity inter-satellite information network. In this paper, a system design with high-sensitivity feedback-homodyne detection scheme and asynchronous ranging algorithm is demonstrated with real-time FPGA implementation. The parallel FFT estimation is applied to improve the speed and range of wavelength drift tracking, which can handle dynamic wavelength drift up to 2.4 pm/s (300 MHz/s). Meanwhile, for clock sources with subtle dynamic frequency offset and sufficient stability, the proposed fractional symbol ranging method is proven to achieve millimeter-level measurement accuracy. The designed system is shown to perform well in terms of both laser linewidth tolerance and noise resistance.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Electronic Engineering
Authors :
NameEmailORCID
Tian, Yang
Zhong, Jie
Lin, Xiaoxiang
Xiao, PeiP.Xiao@surrey.ac.uk
Yang, Haifeng
Zhong, Yu
Kang, Dongpeng
Date : 20 June 2019
Copyright Disclaimer : © 2019 Optical Society of America
Depositing User : Diane Maxfield
Date Deposited : 04 Jul 2019 12:16
Last Modified : 04 Jul 2019 12:16
URI: http://epubs.surrey.ac.uk/id/eprint/852206

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