TY  - CONF
CY  - Orlando, FL
VL  - 3
SP  - 265
A1  - Kaushal, H.
A1  - Jain, V.K.
A1  - Kar, S.
PB  - International Institute of Informatics and Cybernetics, IIIC
KW  - Atmospheric turbulence; Fading channels; Modulation; Optical communication
KW  -  Atmospheric turbulence effects; Better performance; Free Space Optical communication; Modulation schemes; Satellite optical communication; System complexity; Turbulence level; Wavefront distortion
KW  -  Mergers and acquisitions
Y1  - 2009///
AV  - none
ID  - scholars774
N2  - Free space optical communication usually experience channel fading caused by turbulence in the atmosphere. The effect of turbulence in both time and space on the laser beam propagation results in beam broadening, beam wandering, beam jitter and wave front distortions. All these effects ultimately affect the acquisition time required to acquire and locate the space borne target using narrow laser beam. In this paper, performance of FSO system in weak atmospheric turbulence has been analyzed in terms of acquisition time for non-coherent and coherent modulation schemes. It has been observed that there is increase in the acquisition time with the increase in the turbulence level for both coherent and non-coherent modulation schemes. The BPSK gives lowest acquisition time than the other schemes. Amongst non-coherent modulation schemes A/-PPM gives better performance than OOK i.e., with the increase in the level of M, acquisition time decreases. This occurs at the cost of increase in the system complexity.
UR  - https://www.scopus.com/inward/record.uri?eid=2-s2.0-84898432493&partnerID=40&md5=b799d7a677e100e2322f4e389d141eea
EP  - 269
SN  - 1934272701; 9781934272701
TI  - Atmospheric turbulence effect on acquisition time of ground to satellite optical communication system
N1  - cited By 0; Conference of 2nd International Multi-Conference on Engineering and Technological Innovation, IMETI 2009 ; Conference Date: 10 July 2009 Through 13 July 2009; Conference Code:101671
ER  -