Genius is just the threshold for me!

Because of the foundation for the development of electronic warfare aircraft, the first electronic warfare platform aircraft was started as early as seven or eight years ago, and there are still quite a few papers on this topic.

Lin Dong quickly reviewed the papers related to the short baseline time difference method, and the clock on the wall moved forward twenty minutes from 8:30 pm.

soon.

After reading the description of the last paper, Lin Dong pondered for a few seconds, a look of realization appearing in his eyes.

"I see……"

"This presents both a challenge of time accuracy and a challenge of high-precision dynamic measurement."

The short baseline time difference method refers to the fact that the baseline length is fixed on the J-16D fighter jet, which is the distance between the two wingtip electronic pods.

With the length of this baseline, the time difference method can be used for calculation.

However, because this baseline length is too short, it is necessary to ensure nanosecond-level time accuracy when facing radar waves traveling at the speed of light. High performance also requires picosecond-level accuracy; otherwise, the time difference between the detection of the same radar wave by the two wingtip electronic pods cannot be calculated.

In addition, in actual combat, because the J-16D's wings deform and sway under stress during flight, the distance between the two wingtip electronic pods is constantly changing, and the length of this baseline is also constantly fluctuating.

With the J-16D fighter jet's wingspan of 14.7 meters, a slight sway of the wing can cause the distance between the two wingtip electronic pods to deviate by more than half a meter or even several meters.

This requires constantly and accurately measuring the wing deformation data, constantly monitoring the actual distance between the two wingtip electronic pods, and finally ensuring that the two sets of data are absolutely synchronized...

"It's still quite challenging, comparable to the FADEC system for carrier-based aircraft."

Lin Dong recalled Shenyang Aircraft Corporation's hardware proposal for the FADEC system of the J-15 carrier-based fighter jet.

Although the J-15 carrier-based aircraft's FADEC system requires millisecond-level response, it is millions of milliseconds slower than nanoseconds.

However, the J-15 carrier-based aircraft involves the response of the entire system, and the complexity of the system is many times greater than that of the J-16D's short baseline time difference method.

The hardware design of the J-15 carrier-based aircraft's FADEC system is still very valuable for reference...

"Yes, we can learn from others' experiences; we can directly draw inspiration from them!"

"Chief Engineer Yuan Li is actually quite capable; he's not as bad as my godfather made him out to be..."

Lin Dong accessed Chengdu Aircraft Industry Group's core database, found a portion of the hardware solution for the FADEC system previously sent by Shenyang Aircraft Corporation that was compatible with the J-16D, copied it, opened a document, pasted it in, and then modified the solution based on the keyboard with his ten fingers.

In less than twenty minutes, a hardware solution that could meet the nanosecond-level response accuracy requirements of the J-16D short baseline time difference method was freshly produced.

"This also leaves room for measuring wing deformation and actually measuring changes in the baseline length..."

After thinking for a moment, Lin Dong came up with three plans.

The fiber optic sensing solution is resistant to electromagnetic interference, has high sensitivity, and can perform distributed measurements. It can also lay multiple lines along the wing to measure the strain at each point in real time, and then reconstruct the shape changes of the entire wing through algorithms, thereby determining the changes in the baseline.

The visual recognition solution establishes marker points on the wing and then uses a specially designed high-speed, high-sensitivity camera to capture the three-dimensional displacement of the marker points. This can also determine the deformation of the wing and the change of the baseline.

The last option is the laser solution, which uses the principles of laser interferometry and laser radar to directly and accurately measure the data of each deformation point...

"Fiber optic sensing has moderate accuracy and its advantage is strong anti-interference, but its disadvantage is that fiber optics are relatively brittle and easily break in the wing."

"Visual recognition has a medium to low accuracy. Its advantage is that it does not require contact, but its disadvantage is that it is not resistant to electromagnetic interference."

"The laser solution offers maximum precision, which is also its advantage. However, the downside is that lasers are precision instruments and are even more fragile than optical fibers in the wing."

Lin Dong considered the advantages and disadvantages of the three options, but after careful analysis, he decided to skip the analysis and just use them all.

Wingtip pod coordination is the foundation for the J-16D to fully utilize its electronic warfare capabilities. If this feature is disabled, the entire electronic warfare aircraft will immediately lose most of its combat effectiveness.

In this way, increasing redundancy with all three schemes is more in line with the redundancy design principles of military equipment.

After all, it's not a large instrument. Even with all three solutions combined, it only weighs a few dozen kilograms. Compared to the added safety redundancy and insurance design of the three solutions, this weight is entirely worthwhile.

"If lasers are used in conjunction with wingtip pods, resulting in a significant improvement in the accuracy of enemy radar detection, as well as the accuracy of electronic deception... then it seems that the J-16D fighter jet could actually be shown cartoons to enemy aircraft?"

At that moment, a thought flashed through Lin Dong's mind, and his expression immediately revealed a look of anticipation.

Using J-16D fighter jets to play cartoons for enemy aircraft was an idea that came to him when he learned that the electronics technology company could not complete the business and that Chengdu Aircraft Industry Group had to develop the electronic pods themselves.

This also reflects the electronic warfare concepts of many netizens regarding the J-16D's dominance in the field of electronic warfare, more than a decade later.

At first, he thought that by designing the electronic pod himself and writing the system and electronic deception strategy himself, the hardware and software would be fully coordinated, and the idea of ​​playing animations could be realized.

However, after a series of design and calculation tests, it was determined that the accuracy of the electronic deception was only sufficient to simulate intrusion signals from enemy aircraft, but not to simulate specific animations.

However, now, the solution of using lasers in conjunction with wingtip pods to improve the accuracy of enemy radar detection seems to have a basis for implementation...

"Let's get this going!"

Thinking of this, Lin Dong could no longer suppress his excitement.

He quickly grabbed a sheet of confidential paper and a pen, and began writing formulas and various radar wave data on it, starting to meticulously verify the idea.

Ten minutes later, Lin Dong looked at the final calculated parameters and a hint of surprise appeared in his eyes.

"feasible!"

"However, the manufacturing precision of the wingtip pods and the electronic pods must strictly comply with the parameters of the design..."

"Improvements in basic accuracy lead to improvements in overall performance."

"If we can achieve this, combined with a self-developed AI system and electronic warfare strategy, the accuracy and efficiency of the entire electronic deception can be directly improved by 97.2%, and even playing cartoons on enemy aircraft will be no problem."

Lin Dong took a deep breath, opened Xia Tianqiang's email, and uploaded the wingtip pod coordination solution.

[Wang Xingguo]: Engineer Xia, the solution for wingtip pod coordination is as follows. Please make sure you understand the specific technical details. However, wingtip pod coordination is related to the practical foundation of the entire electronic warfare performance and must strictly comply with the solution design...

After explaining the requirements, Lin Dong quickly typed out the numbers of more than thirty papers and then pressed the send button.

"A 97.2% increase in efficiency means that, as long as other computing power and systems can keep up, the same electronic deception power can simulate almost twice as many false targets, which is almost equivalent to a direct upgrade of the entire electronic deception design."

"Hopefully, Xia Gong will do a good job..."

Lin Dong muttered something to himself, logged out of Wang Xingguo's email and logged into his own. An email from Su Ruohua popped up.

"Xiao Dong, we received a difficult problem regarding reentry deceleration control from the Northwest. Do you have any good ideas?"

Reentry deceleration control?

Such obscure vocabulary?

Is it a space return capsule?

Lin Dong was taken aback. He casually clicked on the attachment sent by Su Ruohua, and a large amount of data about reentry control immediately filled the screen.

"Deceleration control, and it needs to be stable and precise... This thing doesn't seem like a space return capsule."

Lin Dong looked at the data, pondered it carefully for a while, and seemed to have thought of something. Suddenly, his eyes widened and he said, "This is the control data for the first-stage rocket recovery? Is China also going to develop a rocket recovery program for the Falcon?"