Gaussian beam tracking method based on free space optical communication

• Main Authors: ZHU BINGCHENG, JIANG PEILIN, WANG FANMENG, CHENG TIAN, XU ANZI, HE ZHUOMIN
• Format: Patent
• Language: Chinese; English
• Published: 27.07.2021
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; TESTING; TRANSMISSION

The invention discloses a Gaussian beam tracking method based on free space light (FSO) communication. The method is divided into a time domain and a space domain, according to the fact that a transmitter transmits laser, a receiver can measure the laser power of the laser, in different time periods, the transmitter transmits the laser with directional parameters, the receiver obtains K samples, and the relative coordinates of a user can be obtained based on the measured values. The method is high in calculation efficiency, only the solution of a linear equation set is needed, and the method can be achieved through a low-cost signal processing unit. And meanwhile, the requirement on a feedback link is reduced, and the method is independent of an iteration process. 本发明公开了一种基于自由空间光(FSO)通信的高斯光束跟踪方法。该方法分时域和空域两种，根据发射机发射激光，接收机可测量该激光的激光功率，在不同时间段里，发射机发射定向参数的激光，接收机获得K个样本，基于这些测量值可以求得用户的相对坐标。本发明计算效率高，只需要线性方程组的解，这可以用低成本的信号处理单元来实现。同时减少了对反馈链路的需求，不依赖迭代过程。