Wireless optical communication in formation flight of CubeSat using convergent beam
(0) In this paper,it is simulated that wireless optical communication performance by using convergent beam in formation flight of CubeSats.To successful formation flight of CubeSats,it is very important to transmit and receive navigation information between CubeSats by communication.In most cases the communication between CubeSats has been conducted by using Radio Frequency signal.The RF signal,however,has a defect of consuming large amount of power.Because of this,the range of communication and the amount of data transmission are constrained.In order to resolve this problem,theoretical research about communication performance was conducted when the laser source which has more efficient energy density than RF signal was used as a communication medium.Although the laser improves the communication performance,it has also a weakness,divergence angle.This makes the intensity of laser beam decreases as it propagates toward,called divergent beam.In this research,the convergent beam is introduced to solve the decreasing intensity problem of laser beam.The decreasing intensity characteristic of the divergent beam makes received power at receiver decreased and this causes communication performance to be declined.However,by using convergent beam,it can be possible to increase received power.We verified this by showing the intensity variation of convergent and divergent beam according to the distance analytically,by introducing Beam Propagation Function,and checked the communication performance by simulating the Bit Error Rate.
CubeSat formation flight communication BER convergent beam beam propagation function
Hyun Cheol Jeon Chan Gook Park
Department of Mechanical and Aerospace Engineering,Seoul National University,Seoul,151-742,South Kor Department of Mechanical and Aerospace Engineering/Automation and Systems Research Institute,Seoul N
国际会议
2014 Asia-Pacific International Symposium on Aerospace Technology(2014亚太航空航天技术学术会议)
上海
英文
1-7
2014-09-24（万方平台首次上网日期，不代表论文的发表时间）