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自由空间光通信(FSO)是以大气为传输媒介,以激光的波长作为载体用以携带高速信息的无线传输技术,它是光通信与无线通信的结合,并兼有光纤通信的高速传输与无线通信可灵活移动等优点,无须挖沟,无须申请频率许可证,为当今卫星通信技术的首选。关键技术主要对FSO通信系统中接收灵敏度进行分析以及对接收的光学系统中跟踪原理进行剖析,为进一步提高自由空间光通信的性能作铺垫。
Free space optical communication (FSO) is a wireless transmission technology that takes the atmosphere as the transmission medium and the laser wavelength as a carrier for carrying high-speed information. It is a combination of optical communication and wireless communication, and combines both high-speed transmission and wireless Communications can be flexible and so on, no need to dig trenches, no need to apply for frequency permits, the preferred choice for today’s satellite communications technology. The key technologies mainly analyze the receiving sensitivity in the FSO communication system and analyze the tracking principle in the received optical system, paving the way for further improving the performance of the free space optical communication.