News on China's scientific and technological development.

A total of 393,000 invention patents were authorized in the first half of 2022, the China National Intellectual Property Administration said on Tuesday. By the end of June, the number of valid invention patents from China had reached 3.906 million, up 17.5% YoY.

• The device’s other applications could include mobile missile launch and earthquake detection
• Unlike previous gravimeters, it takes only a couple of minutes to set up and calibrate and performs well despite noise, vibration and other disturbances

Strangelove said:

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• The device’s other applications could include mobile missile launch and earthquake detection
• Unlike previous gravimeters, it takes only a couple of minutes to set up and calibrate and performs well despite noise, vibration and other disturbances

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Does this create a massive loss of confidence in US submarines stealthyness?

Andy1974 said:

Does this create a massive loss of confidence in US submarines stealthyness?

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It's a device for submarine navigation, not detection.

ZeEa5KPul said:

It's a device for submarine navigation, not detection.

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There's this line in the article, but its capabilities and potential for anti-submarine is still unknown.

The gravimeter could allow a submarine to detect the presence of an underwater mountain or another submarine without using sonar, helping to avoid accidents like the one that befell the nuclear submarine USS Connecticut, which crashed into a seamount in the South China Sea last year.

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Strangelove said:

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• The device’s other applications could include mobile missile launch and earthquake detection
• Unlike previous gravimeters, it takes only a couple of minutes to set up and calibrate and performs well despite noise, vibration and other disturbances

Click to expand...

If the active gravimeters can be used for underwater navigation without the need for sonar, would that enhance the stealthiness and safety of PLAN submarine operations in deep water?

If that's the case, then I hope the 095s, 096s and 039s/041s would adapt such technology.

ACuriousPLAFan said:

If the active gravimeters can be used for underwater navigation without the need for sonar, would that enhance the stealthiness and safety of PLAN submarine operations in deep water?

If that's the case, then I hope the 095s, 096s and 039s/041s would adapt such technology.

Click to expand...

I believe gravimeters are only passive, not active, as they do not need to emit signal.

Strangelove said:

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• The device’s other applications could include mobile missile launch and earthquake detection
• Unlike previous gravimeters, it takes only a couple of minutes to set up and calibrate and performs well despite noise, vibration and other disturbances

Click to expand...

FairAndUnbiased said:

I believe gravimeters are only passive, not active, as they do not need to emit signal.

Click to expand...

Exactly, but they will have to create a "gravity map" in other to use it reliable, the more accurate the map the more accurate the navigation will be.

These gravimeters are an order of magnitude higher than others, their magnetometers are one to two orders of magnitude better and their neutrino detector is about to come online with similar improvements, I believe. Their IR sensors are also one magnitude better.

I think that China has, or is close to having the ability to detect all the nuclear reactors in the world, no matter where they are and possibly even track the mobile ones, and that their ASW will be able to detect subs at depth just based on their mass, magnetic fields and neutrino and IR emissions, i.e. not using sonar.

They have just launched a dedicated ship, the big unmanned drone ship that is said to have complete situational awareness around it (they didn’t mention at what range), it’s drone’s probably have many of these sensors.

Next logical place to put them is on ASW satellites, if they are not already there.

This is just amazing China did invest and research a lot in New Energy sources preparing for zero carbon economy in the future Not just talking about it