TY - JOUR
AU - Yang, Hongkun
AB - With the rapid development of modern science and technology inastronomical imaging, optical communications, optical radar, opticalinformation processing, high-precision ranging, tracking, guidance, andremote sensing, light waves propagating in the medium, especially in theturbulent atmosphere spread more and more important. Atmosphericturbulence is one of the main factors which have influence on theperformance of a laser communication system. Adaptive optics technologyis an important means to solve the problem of atmospheric turbulence. Thispaper states how adaptive optics technique can be used in space lasercommunication system to compensate atmospheric turbulence when laser beamtransmission through it. The core content of adaptive optics is correctlaser beam wave-front disturbance in real-time，with it to enhance opticalsystem imaging quality and the next aim is reach the level of diffractionlimitation. Adaptive optics system consists of wave-front detection，wave-front control and wave-front correction . The demo platformincluding: atmospheric turbulence simulation unit、adaptive correctionunit、signal transmitting and receiving unit. Liquid crystal spatial lightmodulator applications in adaptive optics system and the turbulencesimulation system introduced. And used zernike polynomials method toproduce atmospheric turbulence phase screen simulation analysis.Simulation results show that: in the low spatial frequency components,the atmospheric turbulence phase screen generated by Zernike polynomialmethod consistent with the theoretical values, but in the high spatialfrequency components, the simulation results with large differencebetween the theoretical values. In addition, the simulation results alsoshow that: we can change the distribution of turbulence in the atmospheric turbulence phase screen by increasing the Zernike polynomials of ordersor change the receiving apertures, but to calculate the large calculatethe complex and other shortcomings. If adaptive optics technique can beapplied in space laser communication system and is proved by practice，must make a space laser communication system performance has greatlyimproved.
TI - Based on ground station adaptive optics for laser communications demonstration platform structures
JF - Proceedings of SPIE
DO - 10.1117/12.2034234
DA - 2013-08-21
UR - https://www.deepdyve.com/lp/spie/based-on-ground-station-adaptive-optics-for-laser-communications-C5iRnf04o4
SP - 89061N
EP - 89061N-9
VL - 8906
IS - 
DP - DeepDyve
ER -