Chapter 316 In-orbit Satellite Failure Warning System
Who can guarantee that no other satellites will be affected by extreme solar activity in the future?
During this period of time, Xu You has been trying hard to find a suitable solution.
Xu You’s idea is to create an early warning system for in-orbit satellite failures.
In this way, before a serious failure occurs, an early warning can be given and the satellite can avoid areas with intense solar activity through operations such as changing its orbit.
Ensure people's safety to the greatest extent possible.
The key to early warning is to analyze the changing patterns of satellite telemetry parameters.
The telemetry parameters on the satellite include voltage, current, temperature, pressure, count, status of equipment on the satellite, etc.
Among them, there are real digital data and some analog quantities.
Some represent the status of the satellite itself, and some represent the status of the surrounding space environment.
In order to use these data for early warning, it is necessary to understand the characteristics of these data in detail and be able to convert these data into actual conditions.
After mastering a large amount of satellite telemetry data, Xu You finally designed a complete early warning system through brain simulation and the assistance of software.
It can not only provide early warning of solar activity, but also include some other possible emergencies.
Xu You informed Yang Wu of the news, and Yang Wu was also very overjoyed.
"Professor Xu, are you saying that you have already developed a satellite early warning system for solar activity?"
"Not only solar activity, but other events including system failure, fuel exhaustion, and accidental collisions with space junk can also be warned. If we have time, let's hold a meeting to discuss it."
"I will organize a meeting now. I will call all the core members who don't have urgent tasks over here!"
The significance of this early warning system is very important. It is not only important for our aerospace system, but also concerns the safety of satellites around the world.
Yang Wu was also very excited, and his mood was as if he was about to carry out a rocket launch mission.
After everyone arrived at the conference room, Yang Wu said:
"Professor Xu has just developed a fault warning system for satellites in orbit. Let's ask Professor Xu to explain this warning system."
When everyone heard the news, they were very anxious.
After all, if there really is such a fault warning system for in-orbit satellites, many satellite failures can be avoided.
Ensuring the safety of satellites is of great significance.
At this time, they all focused their eyes on Xu You, looking forward to Xu You's explanation.
Xu You first talked about his analysis of the regular changes in data of satellite telemetry parameters.
"Based on my summary and analysis of a large amount of satellite telemetry data, I roughly divided these data into two categories. The first type is stable telemetry data, where each telemetry data is maintained near a constant value, which indicates that the satellite is in a relatively safe state. The second type is when there is no state or measurement and control event, and the parameter change rate has a step-like jump. This situation should be taken seriously, as some abnormal situations may occur..."
At the beginning, everyone could fully understand what Xu You said.
Some of these early warning methods have already been used by us before.
But as the data and formulas involved gradually increase, and the early warning methods become more and more complicated, everyone knows that this is indeed a very powerful technology.
"This satellite failure prediction method is based on the satellite's historical data and real-time data to analyze the changes in the satellite's data over time. I fitted the curves of various polynomials and finally obtained such a formula."
Looking at the complicated formula on Xu You's screen, everyone couldn't help but look at each other in confusion.
"Professor Xu, can you tell me how to understand this formula?" Su Yiguo asked.
"Yes. When deriving, we must first select a suitable fitting method model based on various parameters and set the fitting order. We assume that the structure, function and other conditions of the satellite subsystems under study remain basically unchanged..."
With Xu You's patient explanation, everyone finally had a general understanding of Xu You's ideas.
At this time, Hu Shucheng asked:
"Professor Xu, according to what you said, this method is mainly applicable to telemetry data that changes slowly over time. In other cases, can this method still accurately warn of satellite failures?"
This time, Hu Shucheng did not make another choice and went to discuss this issue with Xu You privately after the meeting.
With Xu You's instructions last time, Hu Shucheng believed that Xu You really didn't care about the so-called face.
At this time, the most important thing is to try to solve all problems at the meeting and further improve the entire early warning system.
Xu You was not flustered by Hu Shucheng's sudden question, because Xu You was well prepared for this question.
Xu You was also very happy that Hu Shucheng was able to raise questions directly at the meeting this time instead of just considering his own face.
"Mr. Hu asked a very good question, which is exactly what I was going to explain. The early warning system I developed does not only have this technology, but also automatically connects to the appropriate system for different types of telemetry data."
Hearing Xu You's words, Hu Shucheng nodded repeatedly.
Sure enough, Xu You had already considered the things that even Hu Shucheng noticed.
"If it is a more complex time series with various patterns, that is, a non-stationary trend data prediction problem, we can use the summed autoregressive moving average model to analyze it. Here, we use a relatively simple but very practical method - the difference method..."
Next, Xu You explained several technologies for early warning of satellite failures.
For each different type of telemetry data, Xu You has found the corresponding early warning technology.
In this way, the system can be guaranteed to the greatest extent possible to provide timely warnings of unexpected situations that the satellite may encounter.
After Xu You finished talking about his entire early warning system, the atmosphere at the meeting became very quiet.
Because at the moment, no one can give any suggestions.
"Thank you Professor Xu for sharing. Do you have any other questions?"
Commander-in-chief Yang Wu asked everyone, but he himself could not find any problems.
Seeing that no one raised their hands, Yang Wu continued:
"I think if there are no problems, we should start the trial operation of this in-orbit satellite fault warning system as soon as possible."
