Regarding the meter-wave radar, Lu Jiadong has mentioned it three times since he entered this laboratory, if the first and second times are an unintentional move, then the time just said is worth pondering, Tong Wenlie and Song Xiaoxu are both smart people,

Naturally, I can understand the meaning of Lu Jiadong's words, especially Song Xiaoxu, who is an expert in military electronics and radar, coupled with a period of exploration of anti-stealth technology and Lu Jiadong's reminder of "working wavelength", his eyes suddenly lit up, and he couldn't help but exclaim in disbelief:

"Meter-wave radar? Could it be that meter-wave radar can detect stealth targets?"

Tong Wenlie also shook his head noncommittally, frowned very suspiciously and said: "Yes, the detection accuracy of the meter-wave radar is low, the anti-jamming ability is poor, and the response speed is slow, and it has been gradually eliminated by the new generation of short-wave radar.

Tong Wenlie is worthy of being an expert in the air defense missile system, and he is also very proficient in the relevant radars, and what he said is not wrong, as the first generation of radar, the meter wave radar first appeared in the World War II period, but with the rapid development of electronic technology, the shortcomings of the meter wave radar such as low accuracy, easy interference, and large size have been exposed.

It is difficult to compete with short-wave radar with higher precision, stronger anti-jamming ability, and better maneuverability, and because of this, after entering the seventies, many countries have eliminated the meter-wave radar and replaced it with a short-wave radar with better technology, so at present, the meter-wave radar has already become a synonym for backwardness, and the elimination and scrapping is a sure thing, how can it become the preferred system for stealth targets?

Because of this, Tong Wenlie couldn't believe it, in line with a highly responsible attitude towards the project, he bluntly said his opinion, and Song Xiaoxu, who was sitting on the side, looked at Tong Wenlie next to him, and then looked at Lu Jiadong opposite, and slowly nodded in agreement with Tong Wenlie's opinion.........

Lu Jiadong was not surprised by Tong Wenlie and Song Xiaoxu's reaction, at the moment when he did not have a thorough understanding of stealth fighters, he said that an old-fashioned radar that was about to be eliminated by the times could deal with the world's top stealth fighters in military technology, and anyone would sound like a joke, which was like using a Ford car in the 30s of the 20th century and a Maserati drag racing car in the 21st century, the two were not at the same level at all.

So Lu Jiadong just smiled, and did not blindly instill his own views, as the so-called knowing, but also to know why, if you don't understand the principle, even if Lu Jiadong forcibly imposes things on others, the effect will not be very good, after all, the development of weapons and equipment depends on the concerted efforts of everyone,

Rather than fighting alone, although in some respects he relied on his identity as a traverser and was able to put forward some foresight, at best, it was only to make the development of weapons and equipment less detours, and more to rely on military experts like Tong Wenlie and Song Xiaoxu with a solid foundation and rigorous academics to research and create........

Therefore, Lu Jiadong hoped that they could master the core principles in order to create them in the future, rather than knowing the results and only making them with their heads bored, so Lu Jiadong did not rush to explain, but took out a piece of paper, brushed and drew a few numerical lists on it, and then picked up the F-117 model with uncoordinated proportions on the side, glanced at the two people in front of him and said:

"Do you know what radar power is?"

"Radar power refers to the maximum distance at which the radar can detect a target under set conditions, and it is the most basic indicator of radar performance!"

This most basic principle in radar science is obviously difficult for Song Xiaoxu, almost opening his mouth, and this also made Lu Jiadong nod and say:

"That's right, the power of the radar is the basic indicator of the detection distance of the radar, the setting conditions here mainly refer to the working mode of the radar, the detection probability of the target, the probability of false alarm, the radar detection reflection area of the target: that is, the RCS value, and the fluctuating characteristics of the value, the range of the radar mainly depends on the transmitting power, the aperture of the receiving antenna and the gain of the transmitting antenna, and its basic formula is ..........."

Saying that, Lu Jiadong quickly wrote down a mathematical equation formula on the paper, and after Song Xiaoxu on the side saw this formula, a trace of untraceable waves suddenly appeared in his quiet eyes, as if he was thinking of something, as if he had touched the window paper blocking him, and he had faintly seen the vague fruits on it, but he could not break through, and he couldn't help frowning, while pondering, while listening to Lu Jiadong's narration:

"From this formula, we can know that the power of the radar is related to the target type setting. Pen Fun Pavilion wWw. ｂiquge。 The INFO early warning radar is mostly designed with large bomber type targets with an RCS value of more than 50 square meters and small and medium-sized fighters with an RCS value of 3~5 square meters.

However, the radar we have developed at the moment has increased the detection function of stealth targets and cruise missiles and other miniaturized targets, and even miniaturized targets, so our reference value will be reduced accordingly, at least the RCS value is 1 square meter, or even as low as 0.1 square meters...........

"Radar wave wavelength!" Before Lu Jiadong finished speaking, Song Xiaoxu's eyes brightened, and he almost blurted out, but then his expression dimmed again, and he shook his head lonely:

"I've used this method before, but when it comes to arguing the relationship between wavelength and RCS value, I can't go on!"

"Why?" asked Lu Jiadong.

"It's very simple, because we don't have F-117 radar detection data at all, and we don't need to be accurate, just a rough one, but unfortunately we can't find the information at hand, so we ..........."

Song Xiaoxu didn't say anything more, and finally could only sigh and hang his head, with a look of helplessness and decadence, Lu Jiadong didn't say much when he saw this, he directly picked up a few of the materials that Song Xiaoxu referred to and flipped through them casually, and asked in a deep voice without waiting for Song Xiaoxu to explain:

"What is the model of the US Air Force's air defense alert radar?"

"AN/FPS-117 radar!" Song Xiaoxu replied quickly.

"What is the frequency and wavelength of this radar?"

"The frequency is 1~2GHz, and the wavelength range is 150~300 mm, which is a long-wave radar with extremely high accuracy!"

"So if a radar operator stationed at Vandenberg Air Force Base in the United States says that the F-117 he sees on the radar screen is about the same size as a large bird, then do you think you can set the corresponding value range?"

"Vandenberg Air Force Base?Radar Operator?Large Bird?"

Listening to Lu Jiadong's words, Song Xiaoxu only felt very familiar, and couldn't help muttering and repeating, finally at a certain moment he realized something, stretched out his hand and took the information from Lu Jiadong's hand, Yingying's flashing eyes continued to sweep on the lines of words that had already been able to be memorized backwards, and in the next moment, Song Xiaoxu's eyes suddenly froze, as if someone had cast a soul spell, sitting there in a daze, Tong Wenlie on the side couldn't help but be startled when he saw this, and thought that Song Xiaoxu was wrong, and just wanted to go up to ask about the situation, but listened:

"Smack~~"

With a crisp sound, the thick stack of reference materials in Song Xiaoxu's hand suddenly hit his head, followed by a "pop~~", and his head was red, only to see Tong Wenlie's heart tremble, and hurriedly stretched out his hand to stop it:

"Xiaoxu, what's wrong with you, why do you want to beat yourself?"

"I'm an elm head, stupid, stupid, I didn't even think of such a superficial relationship, my head doesn't know what I'm thinking all day long, it's really ......... Alas.........."

After that, Song Xiaoxu lamented again, which made Tong Wenlie even more confused, so he could only cast a look at Lu Jiadong for help, but before Lu Jiadong could speak, Song Xiaoxu preemptively explained:

"There is such a news in the information about F-117, a radar operator at Vandenberg Air Force Base in the United States, talking about the ability of F-117 to evade radar, and just three months ago, the same issue of the American Defense Magazine specifically introduced the AN/FPS-117 anti-aircraft warning radar equipped with the base, combined with its published frequency and wavelength, plus the large Raptor 0.1~With a RCS value of 1 square meter, the monitoring value of the decimeter wavelength can be determined, and so on, the values of other bands will also be easily solved, so that the core technical principle of detecting stealth fighters can be cracked........."

"Really?"

Tong Wenlie also couldn't hide his excitement, and his words were full of disbelief, until he saw Song Xiaoxu nodding very firmly, Tong Wenlie's hanging heart finally let go, and then the excitement surged up on his face, Song Xiaoxu was the same, but compared with Tong Wenlie's simple happiness, he was more annoyed in addition to being happy, so he smiled embarrassedly at Lu Jiadong:

Mr. Lu ........ I....... I....... I still haven't been careful!"

"You have done a good job, and being able to know how to use radar power values to verify the characteristics of stealth technology is enough to show that you have a deep knowledge in this area, but you are just a fan of some authorities, otherwise how can this little thing be hidden from your eyes?"

Lu Jiadong is not wrong, Song Xiaoxu can find out the core technical theory of anti-stealth without any experience, which is already a great achievement, if he is given a little more time, the relevant technical theory will definitely be overcome by him, and Lu Jiadong is a little admired for being able to do this;

It's just that Lu Jiadong's heartfelt words of praise fell on Song Xiaoxu's ears, but he was moved, and he only felt that Lu Jiadong always maintained and encouraged him like this, and he didn't know what to say at the moment, so he pursed his lips vigorously, and after a long time, he said a heartfelt sentence:

"Don't worry, Mr. Lu, before March next year, I will definitely take out the anti-stealth radar with quality and quantity!" )