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A set of atmospheric optical communication system is introduced in this paper. The study of atmospheric optical communication has experienced more than 10 years of troughs. There are some problems that cannot be solved. For example, phase fluctuations produce optical scintillation. There is still no good solution. There are some enterprise applications that optical fiber communication cannot meet the requirements. It is proposed that optical fiber communication is replaced by atmospheric optical communication. To this end, a lot of manufacturers have developed this type of atmospheric optical communication system. Because there is no market, a large number of production lines are closed. There is another type of atmospheric optical communication system. Its application is to study the nature of atmospheric optics. The main customers are research institutes, laboratories, universities and other research groups. At present, the system of this kind of application on the market is very little. The author has developed a set of such a system. It is a portable atmospheric optical communication system. In this paper, the structure of the system is introduced in detail. In the development of the interface and the array receiver, 3D printing technology is used.

In the previous paper, the author puts forward a new technique called aperture averaging weight factor shifting. This technique is created against the disadvantages of the traditional receiver for atmospheric optical communication. This new type of receiver is called the Y-type receiver. A set of Y-type receiver is developed. In this paper, the author introduces the design ideas and hardware of the Y-type receiver. 3D printing technology is also employed in developing the Y-type receiver.

An unmanned aerial vehicle electro-optical pod developed by the author is introduced in this paper. This instrument is created by using 3D printing technology. This unmanned aerial vehicle will be used in the field of free-space optical communication. At present, building up a free-space optical communication experimental link requires a huge resource. It also needs mutual cooperation. This limits the development of free-space optical communication technology. And there is almost no research on the free-space optical communication link between the ground and the unmanned aerial vehicle. Independent development of equipment in this link is of great significance. This paper is the result of originality: develop unmanned aerial vehicle electro-optical pod by the use of 3D printing technology and build up ground-to-space link.