Small satellite manufacturing is not that difficult, in fact, it is almost the same as IT
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In the past, people talked about satellites, and they felt like big guys with hundreds of kilograms or even more than a ton. In recent years, a new term "small satellite" has emerged. Recently, I visited a small satellite manufacturing company. Originally, small satellite manufacturing and IT downtime were similar, not so tall. The development of small satellites is similar to the hardware debugging program. It is also a set of code testing.
At first glance, it feels a bit unexpected. Is it true that Beijing middle school students are so powerful that they can develop satellites? It is more powerful than the Beijing primary school students who studied Su Shi with big data. It seems that the satellite is not able to rely on "Dad" to help, and parents will not.
Recently, I visited a small satellite manufacturing company, which made me realize. Originally, the small satellite was manufactured, and it was almost the same as the IT machine. The development of small satellites is similar to the hardware debugging program. It is also a set of code testing.
In the middle of this board is an OBC, which means "On-Board Computer". It can be seen that this board is relatively loose, not like a bunch of things in the mobile phone crowded together, in order to make a thin one-meter fee.
This is the board responsible for the digital transmission, and Tiandi Communication relies on it. Each board pulls out the power line data line like a PC, and plugs it into the appropriate port.
This PLA is not the People's Liberation Army, but the Payload Adapter load management module, just like the bus management inside the PC. The "leading load design" of the students of Bayi School is not to say this, but to say that the framework structure bears the concept of weight.
This is the battery of a small satellite, which is equivalent to the power of two mobile phone batteries. It is also charged like a mobile phone. It is charged when the sun is shining. When the small satellite turns to the shade, it depends on it. The advantage of space is that there is always sunshine.
There are so many things in making small satellites, and they are put together in the sky to live together. The DBA on the left does not need to be launched, but a modulation board for debugging. Generally, the embedded system does not have a display. R&D requires a modulation board. When it is connected to a PC, it can be programmed and debugged.
This is a small 3U satellite ordered by an entertainment company in China. There is a camera at each end. If the requirements are not too high, this kind of camera used in the sky can be bought by Taobao. Solar panels have not been attached to the four sides. The entertainment company has its own small satellite in the sky, and it can rely on it to carry out certain businesses and open up its imagination. 3 kilograms of things, in fact, can not spend too much money, you can own a satellite. If you can use a small satellite to provide one-stop service, this industry can be carried out.
It is said that the orbit is limited in space, and it is necessary to launch the preemption position first. That mainly refers to the synchronous satellite orbit, over 35,800 kilometers above the equator. Due to communication interference, a synchronous satellite occupies 2 degrees, and 360 degrees has only 180 positions. The small satellite orbit is not so high, four or five hundred kilometers, the limit is not so much, you can send a lot.
Such things as small satellites, once they have been put into industrialization, have become a cabbage in the global competition. It was not so mysterious, and it was said to be similar to IT downtime or embedded system development. In the future, the global small satellite network may also be made by China.
Of course, I have to learn Americans and dare to think big. Shared bicycles can pull billions of dollars in China and the Chinese private capital is very strong. China's communications strength is very strong, IT and embedded development are also powerful, space launch is also strong, and the cost is still low. Small satellite Internet, from the perspective of the industry chain, should also be suitable for China. It would be interesting if the Chinese VCs also started satellite communications.
Of course, it is so simple, just because China's various industrial chains are complete. For most countries in the world, there is a threshold that cannot be achieved. It is not easy to build a board. For example, Europe also provides a board made of small satellites, which can be used to buy boards and small satellites. However, it is hard to say how far the function is open, and the customization fee is also high and scary. The work pace in Europe is slow, and the mail discussion problem is very slow. China has done it on its own, and the underlying functions that it can do can be used. The cost of development is low and free. A middle school can take it back and study it. The launch of this thing is also, there is no reliable upstream to provide launch services, small satellites are made out of the sky, what time is not good to say.
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