Paper
25 September 2007 Coherent detection of position errors in inter-satellite laser communications
Author Affiliations +
Abstract
Due to the improved receiver sensitivity and wavelength selectivity, coherent detection became an attractive alternative to direct detection in inter-satellite laser communications. A novel method to coherent detection of position errors information is proposed. Coherent communication system generally consists of receive telescope, local oscillator, optical hybrid, photoelectric detector and optical phase lock loop (OPLL). Based on the system composing, this method adds CCD and computer as position error detector. CCD captures interference pattern while detection of transmission data from the transmitter laser. After processed and analyzed by computer, target position information is obtained from characteristic parameter of the interference pattern. The position errors as the control signal of PAT subsystem drive the receiver telescope to keep tracking to the target. Theoretical deviation and analysis is presented. The application extends to coherent laser rang finder, in which object distance and position information can be obtained simultaneously.
© (2007) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Nan Xu, Liren Liu, De'an Liu, Jianfeng Sun, and Zhu Luan "Coherent detection of position errors in inter-satellite laser communications", Proc. SPIE 6709, Free-Space Laser Communications VII, 67091I (25 September 2007); https://doi.org/10.1117/12.732300
Lens.org Logo
CITATIONS
Cited by 1 scholarly publication.
Advertisement
Advertisement
RIGHTS & PERMISSIONS
Get copyright permission  Get copyright permission on Copyright Marketplace
KEYWORDS
Receivers

Signal detection

Telecommunications

Telescopes

Laser communications

Space telescopes

Sensors

Back to Top