Experimental research of time-averaging effect in space optical communication
-
1.
National Key Laboratory of Tunable Laser Technology, Harbin Institute of Technology, Harbin 150001, China
-
Received Date:
2006-12-21
Accepted Date:
2007-03-27
-
Abstract
To present preference to design of pointing,acquisition and tracking link in space optical communication,time-averaging effect of the atmospheric scintillation in the strong turbulent regime was studied experimentally.The mathematical model for the fade probability in space optical communications was provided in which effect of the pointing jitter and atmospheric scintillation on intensity fluctuations was taken into account.Based on the above,the improvement of links' fade fluctuation by time-averaging effects was analyzed.Experimental results show that the probability density function of irradiance in the strong turbulent regime is governed by the lognormal distribution,when exposure time reaches several decades of milliseconds;the required fade budget of the link at a lost-tracking probability of 10-3 is improved by the least of 15dB~20dB,when the method of time-averaging effects of the atmospheric scintillation is used in space optical communications.
-
-
References
|
[1]
|
MA J,HAN Q Q,YU S Y,et al.The effect of vibration on intersatellite optical communication and the resolving project[J].Laser Technology,2005,29(3):228-232(in Chinese). |
|
[2]
|
REYESA M,SODNIKB Z,LOPEZA P,et al.Preliminary results of the in-orbit test of ARTEMIS with the optical ground station[J].Proc SPIE,2002,4635:35-49. |
|
[3]
|
REYES M,CHUECA S,ALONSO A,et al.Analysis of the preliminary optical links between ARTEMIS and the optical ground station[J].Proc SPIE,2002,4821:33-43. |
|
[4]
|
ANDREWS L C,PHILLIPS R,HOPEN C Y,et al.Theory of optical scintillation[J].J O S A,1999,A16(6):1417-1429. |
|
[5]
|
AL-HABASH M A,ANDREWS L C,PHILLIPS R L.Mathematical model for the irradiance probability density function of a laser beam propagating through turbulent media[J].Opt Engng,2001,40(8):1554-1562. |
|
[6]
|
AL-HABASH M A,ANDREWS L C.New mathematical model for the intensity PDF of a laser beam propagating through turbulent media[J].SPIE,2000,3706:103-110. |
|
[7]
|
YANG H,LIU W Q,LIU J G,et al.Monitoring and study of city troposhperic aerosol[J].Laser Technology,2006,30(2):174-176(in Chinese). |
|
[8]
|
LIANG Z Y,ZHANG S F,WANG J M.Engineering alteration of a passive mode optical probe system[J].Laser Technology,2006,30(3):286-288(in Chinese). |
|
[9]
|
KANG X P,LÜ B D.The axial intensity of nonparaxial Gaussianbeams diffracted by a small aperture[J].Laser Technology,2006,30(3):332-336(in Chinese). |
|
[10]
|
TOYOSHIMA M,ARAKI K.Effects of time averaging on optical scintillation in a ground-to-satellite atmospheric propagation[J].Appl Opt,2000,39(12):1911-1919. |
|
[11]
|
KIASALEH K.The probability density function of signal communications systems impaired by pointing jitter and turbulence[J].Opt Engng,1994,33(11):3748-3757. |
-
-
Proportional views
-
Map
DownLoad: