空间电子技术2026，Vol.23Issue(4)：164-171,8.DOI:10.3969/j.issn.1674-7135.2026.04.013
空间激光指向标定与激光通信共口径光学系统
A common aperture optical system design of laser pointing calibration and space laser communication
任兰旭 1王筱岷 1刘贝 1王静 1王肖 1张缓缓 1薛婧婧1
作者信息
- 1. 中国空间技术研究院西安分院,西安 710000
- 折叠
摘要
Abstract
To address the issues of poor initial pointing and long chain establishment time for laser terminal,a method using a defocused off-axis parabolic mirror as the common aperture part is proposed,which separates the laser pointing calibration wavelength of 808 nm from the laser communication wavelength of 1 550 nm with wavelength beam splitter.An optical system is designed,which makes laser pointing calibration and laser communication work together using the common aperture.The transfer function of the laser pointing calibration optical system is close to the diffraction limit.The brighter stars are imaged at different orientations.The pointing accuracy of the signal optical axis is improved by the laser pointing calibration optical system.The laser communication optical system uses the polarized transceiver mode,which includes signal transmission,signal acquisition and tracking,and communication receiving optical subsystem.The image quality of the optical subsystems is close to the diffraction limit.Additionally,the laser communication optical system implements the high transceiver isolation and reduces the backscattered stray light on the receiving system.Therefore,the common aperture optical system proposed in this paper has obvious advantages in lightweight,rapid link establishment and networking,which is expected to further enhance the application of laser terminal in satellite internet.关键词
空间激光通信/初始指向差/共口径光学系统/偏振收发Key words
space laser communication/initial pointing/common aperture optical system/polarized transceiver分类
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任兰旭,王筱岷,刘贝,王静,王肖,张缓缓,薛婧婧..空间激光指向标定与激光通信共口径光学系统[J].空间电子技术,2026,23(4):164-171,8.
