Frequency characteristics of atmospheric turbulence in space-to-ground laser links

Morio Toyoshima; Hideki Takenaka; Yozo Shoji; Yoshihisa Takayama

doi:10.1117/12.850149

4 May 2010 Frequency characteristics of atmospheric turbulence in space-to-ground laser links

Morio Toyoshima, Hideki Takenaka, Yozo Shoji, Yoshihisa Takayama

Proceedings Volume 7685, Atmospheric Propagation VII; 76850G (2010) https://doi.org/10.1117/12.850149
Event: SPIE Defense, Security, and Sensing, 2010, Orlando, Florida, United States

Abstract

Experiments involving laser communications between an optical ground station and a low earth orbit (LEO) satellite were successfully conducted from 2006 to 2009. The optical ground station is located in Koganei, Tokyo, and was developed by the National Institute of Information and Communications Technology (NICT), Japan. Four laser beams were transmitted from the optical ground station to the LEO satellite in order to reduce the intensity of the fluctuation of the optical signal caused by atmospheric turbulence. The frequency characteristics of the downlink are evaluated on the basis of theory and the measurements, where the sampling rate was 20 kHz. The speckle patterns were averaged and the frequency response of the received optical signal was filtered by the telescope aperture. The basis of the temporal aperture filtering function is derived and compared with the measured results.

Citation Download Citation

Morio Toyoshima, Hideki Takenaka, Yozo Shoji, and Yoshihisa Takayama "Frequency characteristics of atmospheric turbulence in space-to-ground laser links", Proc. SPIE 7685, Atmospheric Propagation VII, 76850G (4 May 2010); https://doi.org/10.1117/12.850149

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available