Open AccessPointing and tracking errors due to localized deformation in inter-satellite laser communication links
Author(s) -
Liying Tan,
Yuqiang Yang,
Jing Ma,
Jianjie Yu
Publication year - 2008
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.16.013372
Subject(s) - ellipse , tracking (education) , deformation (meteorology) , optics , distortion (music) , computer science , zernike polynomials , satellite , tracking error , gaussian , free space optical communication , laser , wavefront , computer vision , physics , artificial intelligence , telecommunications , psychology , amplifier , pedagogy , control (management) , bandwidth (computing) , astronomy , quantum mechanics , meteorology
Instead of Zernike polynomials, ellipse Gaussian model is proposed to represent localized wave-front deformation in researching pointing and tracking errors in inter-satellite laser communication links, which can simplify the calculation. It is shown that both pointing and tracking errors depend on the center deepness h, the radiuses a and b, and the distance d of the Gaussian distortion and change regularly as they increase. The maximum peak values of pointing and tracking errors always appear around h=0.2lambda. The influence of localized deformation is up to 0.7microrad for pointing error, and 0.5microrad for tracking error. To reduce the impact of localized deformation on pointing and tracking errors, the machining precision of optical devices, which should be more greater than 0.2?, is proposed. The principle of choosing the optical devices with localized deformation is presented, and the method that adjusts the pointing direction to compensate pointing and tracking errors is given. We hope the results can be used in the design of inter-satellite lasercom systems.