With the strategic arrangements out of the way, it's time to deal with the tasks within each person's specialty.

Everyone gave a brief talk about their work, mainly emphasizing the problems encountered during the week. If it can be solved on the spot, it will be solved on the spot, and if it can't be solved, it will be recorded and discussed separately. It's just that listening to the core members of the Emperor's Sky Shield talk about things in their profession will make people confused in most cases, even friends for many years are no exception, often asking for details they don't understand for a long time, and finally find out that they have a misunderstanding.

Anchen often feels that this process is actually a waste of time, and under the "technology explosion" that has occurred in the past hundred years, it is now like a mountain of interlaced technologies between them. But she never objected to the meeting, mainly because she also wanted to know what other people were doing – the DNA to listen to stories was embedded in the DNA of human ancestors when they lived on the savanna, an instinctive preference that allowed people to learn from other people's experiences at the time, and now promotes harmonious communication between people.

Of course, after the "story" is told, the meeting still has to end. After that, the core members of the Imperial Sky Shield will return to their respective posts.

An Chen's position is a senior researcher at the Satellite Console, which is her identity in the face of many ordinary employees of the Imperial Sky Shield. In this capacity, An Chen and Yan Qilan are at the same level, but An Chen's scope of duties is narrower than Yan Qilan. Because Yan Qilan is nominally a technical consultant, An Chen is in charge of satellite control and related scientific research.

Of the seven satellites that have been launched so far, in addition to the two that have been decommissioned, the five that are still in the sky are all with research missions. In order to accurately control the satellite, the electronic control system used by the Sky Shield has also been continuously upgraded, and an important part of it is the continuous improvement of the accuracy of the timer.

However, after a certain level, the satellite console discovered the problem: the timer on the satellite became "faster".

After examining all the aspects – the effects of signal delay, timer stability, decoding time consumption time, etc. – it is still impossible to rule out that the time on the satellite is advancing by about 10 microseconds per day. While 10 microseconds may not sound like much, 10 microseconds per day means that the satellite will have an error of up to 18 milliseconds over its design life of at least five years, enough to interfere with the satellite's signal transmission to the ground.

Not to mention that due to lack of funding, the life expectancy of satellites launched by Emperor Sky Shield is usually more than five years. Although most of the navigation satellites they are launching now are ordinary navigation satellites, and as far as the navigation system is concerned, the timer error of a single satellite itself has little impact, but it is the strategic satellite of the Emperor's Sky Shield that is fatal, and if it involves the precise positioning of a single satellite, if this time error is not corrected, it may have a serious impact on the missile strike landing point.

However, if we only talk about practicality, as Yan Qilan thinks, an error of 10 microseconds is not intolerable. For each satellite, this systematic time advance is about 10~30 microseconds per day, although slightly different, and the dislocation of each satellite is very stable. In this way, this phenomenon can be corrected by purely mathematical methods, so that the satellite can continue to operate normally.

However, Anchen feels that this is not only a technical problem, but also an interesting scientific phenomenon. Why does time on satellites become "fast"? The known equipment has been ruled out, and at a distance of almost 20,000 kilometers from the ground, what exactly happened?

Anchen thinks this problem is worth studying, and she has been asking Ji Wanxing of the satellite control team to keep track of the satellite's time advance.

Ji Wanxing is the discoverer of the phenomenon of time advance, and when she discovered and named it the "extraterrestrial time difference effect" last year, she was just a small research assistant in the satellite control group. Anchen didn't know how she found out about the time difference, because the 10-microsecond advance seemed more like a fluctuating value of signal transmission delay to most people in the control group. However, the research assistant, who wore a plaid shirt and black-rimmed glasses, used reliable statistical analysis to prove that the 10-microsecond advance was real and stable in the long run.

An Chen came out of the conference room of the core members and took the elevator up to the 52nd floor. The entire 52nd layer is divided into the main console of the satellite control group, and the supercomputer clusters from the 53rd to the 58th layer provide powerful real-time data processing support for the console.

In order to prevent the dust from affecting the expensive electronics of the main console, An Chen took off his fashion cloak and dustproof coat and hung them outside before entering the control room, and then put on a light blue lab coat, took off the work boots he wore when collecting on the farm, and changed into indoor slippers before entering the door.

The exterior door is directly connected to the elevator hall, but there is no direct access to the control room through this door. In fact, the inside of this door is a wind shower room, after the outside door is closed, An Chen turns on the switch of the air shower room, letting the wind blow off the floating dust on the surface of her body from all directions, and then closes the air shower to open the door inside, and enters the range of the console.

The main equipment of the satellite console is the computer - it is not entirely said that it is "computer", because these things with large displays are actually terminals connected to supercomputer clusters. The satellite console is like a large collective office, with a terminal in front of everyone.

When An Chen came in, the people who saw her greeted her kindly.

As a senior researcher and head of the satellite control group, An Chen is a very approachable leader, which may also have something to do with the fact that she is only 27 years old after all. Some people may have questioned at the beginning how a young man without a Ph.D. could lead a control group known as the "Satellite Brain". But they soon realized that a leader like Anchen, who is willing to accept opinions and can get along well with everyone, can improve the happiness of working in this team more than the usual old seniority who is experienced but has a clear relationship with everyone because of his seniority.

It is precisely for this reason that the satellite control team is generally regarded by the employees of the Sky Shield Group as one of the best working teams. In particular, the "superior-superior" model that is common in the industry has been completely eliminated here, and the newly graduated assistant researchers and senior researchers are given the same respect, so that some young people who are not suitable for flattering leadership because of personality problems have jumped to the shield of the emperor for this purpose, and Ji Wanxing, who discovered the "extraterrestrial time difference effect", is also one of them.

An Chen made two cups of mint tea next to the drink machine and walked to Ji Wanxing's desk.