Wavelet analysis was proposed in the 70s, and gradually developed in the mid-80s is a new set of signal processing algorithms, wavelet analysis because it explains the volatility of the waveform at the time of attenuation, and the oscillation form of its amplitude between positive and negative phases. Compared with the classical algorithm of signal processing and calculation, the Fourier transform, which is commonly used in mathematics, because of the unique nature of wavelet analysis, it can automatically adapt to the requirements of time-frequency signal analysis, so that it can focus on any details of the signal, which solves the difficult problem of Fourier transform, so some people call the wavelet transform "mathematical microscope".

It is based on the above reasons that wavelet analysis has a wide range of applications in medical equipment, geological exploration, information engineering and other fields, and because of the advantages of this algorithm in signal processing, high efficiency and strong anti-interference ability, it is more widely used in the field of military equipment.

For example, various types of radars, electronic countermeasure systems, battlefield reconnaissance and surveillance systems, information exchange systems, electronic countermeasure systems, and sonar systems for submarines can all see the shadow of wavelet analysis, and it can be said that it is the most basic mathematical operation method in military electronic signal processing since the mid-to-late 80s.

Although Lu Jiadong, as a military expert who traveled through later generations, did not directly participate in the research and development of military electronic equipment in later generations, as a participant and developer of the research and development tasks of large-scale military equipment in many countries, he naturally had a lot of contact with the military electronic equipment supporting these main equipment.

I can't help but know that wavelet analysis is an artifact of electronic signal processing, and through self-study and teaching, the basic theory and operation methods of wavelet analysis are also very clear, but because of the recent busy affairs and the impact of factors such as frustration and anxiety in the middle of the artillery radar, I didn't think about it for a while, and today through Song Xiaoxu's sentence "Master Xiaobo", Lu Jiadong finally captured the shining and beautiful shell in his vast mind - wavelet analysis!

Lu Jiadong wrote and patiently explained, and although Zhong Xiaomo and Song Xiaoxu, who were standing beside him, were not very familiar with this name, they were also perennial signals no matter what they said. People who deal with waveforms and numbers, listening to Lu Jiadong's words, naturally understand the great value contained in it, so the more they listen, the wider their eyes open. The more he listened, the more excited he became, until Lu Jiadong finished talking about all the details of Xiaowave's analysis, Song Xiaoxu couldn't help but pat his thigh and give Lu Jiadong a thumbs up:

"Director Lu, you are amazing. You can think of such an amazing way, you are amazing!"

"Yes!" As soon as Song Xiaoxu's voice fell, Zhong Xiaomo looked at Lu Jiadong incredulously: "I have also been exposed to this set of mathematical methods before, it seems that it was first discovered by two French geological engineers in 1974, and I also read the relevant introduction in a foreign-related journal.

Although Zhong Xiaomo's words were not finished, his meaning was self-evident, and to be able to overcome such cutting-edge mathematical problems, Lu Jiadong's ability once again shocked Zhong Xiaomo. Not only Zhong Xiaomo, but also Song Xiaoxu standing beside him, and Lu Jiadong saw the two teachers and students in front of him with such expressions, and quickly explained with a smile:

"In fact, I also followed the ideas of the two French engineers and incorporated some mathematical analysis methods to come to this conclusion, originally thinking of supporting the basic research and development project for artillery position communications, but I think this set of signal processing calculation methods should also be applicable to radar!"

Before Lu Jiadong participated in the development of artillery radar, he had been the chief designer of the new 52 times caliber 155mm artillery project, and it was reasonable for him to develop radio communications as a supporting artillery tool. In addition, Lu Jiadong's reputation as a military genius Zhong Xiaomo and Song Xiaoxu have long been thunderous, so they didn't feel anything wrong with Lu Jiadong's explanation, because of this, after Lu Jiadong said this. Song Xiaoxu said excitedly:

"With Director Lu's wavelet theory, the last hurdle of our artillery radar can be overcome!"

"That's right!" As soon as Song Xiaoxu's voice fell, Zhong Xiaomo looked at Lu Jiadong excitedly: "Director Lu, you really solved a big problem, so you want me to say that if the artillery radar is successfully developed this time." Director Lu, you are definitely the biggest hero!"

Listening to Zhong Xiaomo and Song Xiaoxu's words, Lu Jiadong waved his hand with a faint smile on his face and said, "I don't dare to claim this credit!"

As soon as Lu Jiadong's words fell, Zhong Xiaomo and Song Xiaoxu looked at him suspiciously, but Lu Jiadong's words did not stop there, but pointed to Song Xiaoxu beside him:

"If you want to rely on merit, give it to Xiaoxu, without his 'Master Xiaobo', you can't think of it even if you want to break my head!"

"Alas, I don't dare to take this credit, if you want to give it, give it to that Xiaobo master!"

After Song Xiaoxu said this, both Lu Jiadong and Zhong Xiaomo couldn't help laughing, and it didn't take long for Song Xiaoxu's laughter to join, and the long-lost laughter came out of the basic theory research room of the Central Plains Electronic Radar Institute again

After Zhong Xiaomo optimized the parameters of wavelet analysis and other values of artillery radar again, the improved artillery radar was also officially put into the prototype production and manufacturing stage, when this new high-mobility artillery reconnaissance and school firing radar that incorporated countless people's efforts and sweat receded the mysterious veil and showed the true face in front of everyone, the members of the entire new artillery radar development team instantly burst into warm cheers

"Z~~~Z~~~" is located in a large open space behind the Central Plains Electronic Radar Institute, installed in the cabin of the new artillery reconnaissance and calibration radar display system at the rear of the truck, constantly emitting the signal sound transmitted by the radio waves, and on several "B" type displays, the basic status of the radar, the detection direction, the monitoring range, and the information processing situation can be said to be clear at a glance.

At this moment, two lights suddenly flashed on the target display screen, and then a few seconds later, several rows of clear signal parameters appeared on the display screen next to it, and Tan Bin, director of the General Staff Armament Department, who was standing behind the operator and came to inspect the progress of the new artillery radar, couldn't help but ask eagerly:

"How's that? What is the distance and bearing?"

"Report to the chief, the artillery position is 8 kilometers away from us, the No. 4 target position!"

"Can you guess what type of artillery it is?" As soon as the operator's voice fell, Tan Bin couldn't wait to ask, and the radar operator sitting on the console carefully looked at the data on the display screen again and replied without hesitation:

"From the analysis of the data displayed by the radar, it should be 82 mortars!"

Listening to the operator's words, Tan Bin tilted his head to the side and looked at the confidential secretary who was following him, and the confidential secretary opened the folder in his hand and glanced at it, and nodded affirmatively at Tan Bin:

"Chief, the reported bearing and type of artillery are completely accurate!"

"En!" After listening to the confidential secretary's report, Tan Bin couldn't help but bow slightly, and his originally serious face also showed a pleased smile, and then turned his head to Lu Jiadong, who was following him, and said with a smile:

"I really didn't expect this new artillery radar to be really powerful, how big is an 82mm mortar shell? Even this can be seen clearly, if our artillery unit is installed, then it will no longer be short-sighted!"

"The chief is right!" Lu Jiadong responded, while leading Tan Bin and his party to inspect the leader out of the radar cabin, at this time the electric sweep array antenna at the back of the cabin adjusted its orientation and once again invested in the new target detection, but Lu Jiadong's words did not stop because of this:

"Not only mortars, this artillery radar also has a strong detection ability for 122mm howitzers, 152mm howitzers, and long-range rocket artillery, of which the detection distance of large-caliber artillery can reach more than 35 kilometers, and the accuracy can be controlled within 35 meters!"

"How's the reaction time?" Tan Bin is worthy of being the head of the General Armament Department, and the questions he asks will always be to the point, but this is not difficult for Lu Jiadong, so as soon as Tan Bin's voice fell, he replied categorically:

"It can be controlled in less than 8 seconds!"

"Within 8 seconds?" Looking at the new artillery radar integrated into a truck in front of him, Tan Bin couldn't help but exclaim: "My obedient! That is to say, in the blink of an eye, the enemy's artillery position will be exposed to our firepower?"

"Theoretically, it is true!" Lu Jiadong smiled confidently, and his tone of voice was even more firm and abnormal: "And in fact, it can be done, if the training is done properly, and the radar and artillery units cooperate tacitly, the whole time from the discovery of the ground target to the counterattack fire will not exceed one minute!"

"Not bad! Very good! Very good!" Tan Bin stood in front of this new artillery radar with his hands behind his back, his face was filled with a smile of joy from the bottom of his heart, and then he pointed to the radar that was running in front of him, and said with a smile:

"This radar has a wide range of applications, good mobility, fast response, high integration and automation, and can be said to be a rare battlefield weapon!"

As he spoke, Tan Bin turned his head behind him and glanced at the people who accompanied the inspection behind him, and finally locked his eyes on Lu Jiadong beside him, and then continued with a meaningful smile on his face:

"Xiao Lu, such a good weapon, have you ever thought of competing with those British guys?"

"Competing with the British?" Lu Jiadong was very surprised by Tan Bin's sudden question, and then couldn't help but say in surprise: "Chief, you're not joking, are you?"

"Do you think I'm joking?" said Tan Bin's meaningful smile (to be continued). )