Beixi natural gas pipeline was man-made damage, and a large amount of natural gas leaked. China's Gaofen 5 02 star urgently transferred data over the incident site to collect data and became the first country to obtain an accurate estimate of natural gas leakage.
This detection not only showed the world the powerful high-precision detection performance of Gaofen 5 02 satellite, but also reflected the rapid orbital change capability of Chinese civil remote sensing satellites in response to emergencies.
Gaofen No. 5 02 satellite monitoring Beixi natural gas pipeline
said that this incident actually also raises a problem, that is, if China's civilian satellites already have the ability to change orbit quickly, then China's military satellite is likely to have the same level or even higher orbit change capability, which can better meet the People's Liberation Army's detection needs for time-sensitive targets.
At the same time, this also means that the PLA has the ability to use satellites to accurately track time-sensitive targets and guide long-range missiles to launch an over-visual range attack.
Chinese reconnaissance satellite detection time-sensitive target diagram
This is not good news for hostile forces that rely on large surface ships to be domineering and covet China. Why do
say so? Because of the height of the orbit of satellite , except for the satellites located in the geosynchronous orbit, they can stay relatively still with the earth and stay over the same area for a long time. All other orbits of satellites need to orbit the earth.
This causes satellites to appear over the target area only when flying in a specific orbit. Therefore, when reconnaissance satellites reconnaissance on the ground, they often have a large reconnaissance window period, and it is difficult to effectively track the fast moving time-sensitive target
satellite orbit diagram
At the same time, because of the orbital limitations. If a satellite wants to change its reconnaissance area, it needs to change the orbit of the satellite itself.
Considering that satellites cannot replenish fuel after launch, the satellite's orbit change chance is to use it once and once, and many satellites can only fly on the same orbit throughout their entire lives. This double limitation of
has led to many reconnaissance satellites not having the ability to track time-sensitive targets. Conversely, if you want to use satellites to track time-sensitive targets, you must break these restrictions.
currently has two mainstream methods to break the restrictions.
First, the number of satellites must be large enough. Use a large number of satellites to fill the vacant period during revolution, thereby increasing the reconnaissance refresh rate in the target area and achieving tracking of time-sensitive targets.
The satellite reconnaissance system established by the People's Liberation Army adopts this reconnaissance model, which can increase the refresh rate of the target area to 20-30 minutes.
US aircraft carrier
taken by Chinese satellites, the second is to allow the satellite to carry enough fuel and get more opportunities for orbital change. In this way, even if the number of satellites is small, continuous detection of the target can be achieved by continuously changing orbits.
In this Beixi natural gas pipeline leakage incident, China's Gaofen 5 02 satellite flew over the target by changing the orbit in real time to collect leaked data.
Of course, the Gaofen 5 02 satellite will use orbital change to collect leaked data from the Nord Stream pipeline. It is not because the number of Gaofen satellites is insufficient.
On the contrary, the number of high-score satellites is as high as 35. Even compared with military satellites in some countries, this constellation is quite large.
The reason why this mission sent Gaofen 5 02 to collect leaked data on natural gas is mainly because Gaofen 5 02 is equipped with hyperspectral loads that can detect natural gas.
Beixi natural gas pipeline leakage
In the entire high-segment satellite constellation, only this satellite can accurately detect the scale of natural gas leakage. When other satellites are unable to perform this mission, the Gaofen 5 02 can only use orbital change to detect the Beixi natural gas pipeline.
However, Gaofen 5 02 satellite and the natural gas detection mission it performs are special cases after all.Therefore, we only need to rely on orbital reconnaissance to deal with it. There is no need to form a large-scale reconnaissance constellation like military reconnaissance satellites.
After all, large ships sailing on the sea are much easier to see than natural gas that requires special spectral loads to detect. Cooperating with the 20-30-minute reconnaissance refresh rate and the regional denial anti-intervention system, the People's Liberation Army is fully capable of tracking and attacking large surface ships with bad intentions in real time.
Of course, China will not establish a reconnaissance constellation with the main mission of detecting natural gas leakage, which does not mean that China will not continue to develop a civilian precise monitoring satellite such as Gaofen 5 02 satellite in the future.
Because as China pays more and more attention to climate change, in order to better collect global climate data, the number of related monitoring satellites will inevitably increase.
High-score satellite concept map
Especially after an accident occurred in the Beixi natural gas pipeline and a large number of greenhouse gas leaked, the global climate will inevitably usher in a sudden change. It is necessary for China to continue to launch new monitoring satellites to collect meteorological data. Only in this way can China better respond to the challenges brought by climate change.
For China, although the leakage of Beixi natural gas pipeline is far away, it is not unrelated to us. Because although this incident gave China's satellites the opportunity to show their detection capabilities, it also sounded the alarm for energy security.
When hostile forces may regard the energy supply chain as a target, we must not only continue to develop advanced civilian monitoring satellites such as Gaofen 5 02, but also further improve satellite detection capabilities and establish a defense system that uses offense instead of defense. Only in this way can China avoid the Beixi accident from happening to itself.
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