Chapter 63 Navigation Meteorological Work Microwave Technology

"Huh!" Hearing Zhang Zhimu ask about the armored division, Li Yunhe smiled and said: "This Li Wei, except for returning to Yaogang once when recruiting pilots, he has been in Baotou after the New Year, mixing with the armored soldiers every day. However, what Li Wei is doing now is not a simple armored division. I see that there is an army in the army! Alas! Who let this Li Wei and Li Jing be Uncle Chen's treasures, plus now Mr. Ouyang is spoiled. Now it's incredible! ”

"Hmmm! Li Wei looked like a fierce general, but his mind was also careful! Speaking of Li Wei and Li Jing, Zhang Zhimu couldn't help but praise a few words. These two are generals who can be on top of any place at any time, and each of them is usually in charge of a force that will have a great impact on the military power of the entire kiln. It plays a decisive role in the building and development of the armed forces.

"The artillery trucks we equipped, all of them are the latest improvements. Moreover, I discussed with Li Wei and transformed our container transport trailer for them to transport tracked gun trucks and armored vehicles. Tracked vehicle assaults are very useful, but long marches can easily go wrong. It's better to transport it in a large trailer! "Also, the kind of six-wheel drive vehicles we are engaged in work very well, which has both the off-road ability of a tracked vehicle and the flexibility of a four-wheel drive vehicle." They were armed with a regiment of wheeled armored infantry. I heard Li Wei say that his armored division can be pulled up to fight now! ”

"Good! Wait for us to arrange it, let's go to Baotou to have a look! Zhang Zhimu said.

Back in the office, Yang Yulin came over with tea and said, "You can call the command center!" Mr. Ouyang called! You don't have a pager, so I didn't say I didn't find you! I know you've gone to Master Qingfengzi, so let's wait for you to come back and call them back! ”

"Hmmm! Madame is smart! However, you see the benefits of not having a pager! Zhang Zhimu said that he praised Yang Yulin and said.

Yang Yulin took advantage of Zhang Zhimu's tea to dial the command center, and Zhang Zhimu took the phone: "Mr. Ouyang is looking for me?" ”

"Yes! Wu Sangui and the others telegraphed that most of their personnel had crossed the sea to the North American side. The progress is going well, and the Indians now see that they are more and more numerous, and seem to be wary, but there is no other action! Ouyang He said, "However, they are also in great trouble!" ”

"What's wrong! There are so many people, there is enough food, what is the trouble? Zhang Zhimu asked.

"The roads they built are gone. As soon as the weather warmed up, the frozen ground under the road surface melted, and soon it became a muddy road. Some of the houses that have been built are not good underneath! The more you dig in the mud, the worse it gets! Leave them at a loss. I have already told Mr. Lo Bingyi about this and asked them to study a solution. ”

"Haha!" Zhang Zhimu listened to Ouyang He's words, laughed and said, "No need to study!" You send a telegram back to Wu Sangui and them, just the words 'cutting down trees and paving the road'! Zhang Zhimu had watched a documentary about the road being paved by the Americans from Alaska, and the American general used this method to build the road. The construction of roads and railways on permafrost is high-tech work, and there are too many problems to be solved! The easiest way to do this is to take advantage of the abundant timber resources in the area and build the road first. In this way, their army could move southward on a large scale.

"Oops! That's right! Ouyang He said, "Wu Sangui said that there are trees everywhere over there, and it is completely possible to use wood to tie wooden rafts and spread them on the soil, which is better than constantly digging out those messy muds!" I'll send a telegram to Wu Sangui right away! ”

"And yes! I wonder if Wu Sangui and his cavalry can go south along the coast first, and go all the way to a place where there is pasture, otherwise they have so many horses, and it is a great burden to have no grass in winter. ”

"This is what Mr. Chen and I mean! We also had two warships accompany them on their way south at sea. You can provide them with food and other support along the way! Ouyang said.

"That's great!" Zhang Zhimu said.

Yang Yulin saw Zhang Zhimu put down the phone, and asked with a smile: "Hey! How do you know everything? ”

"Humph! Who am I? Zhang Zhimu said deliberately very well.

Originally, Zhang Zhimu wanted to hold a meeting as soon as possible to study the location of the chemical plant, but because Lu Chengxiang had not returned from Shanghai Town with his people, he had to wait a while.

Just when Shi Tao returned to the kiln, Zhang Zhimu and Shi Tao talked for two days.

Zhang Zhimu now thinks that Shi Tao is a person, and he is simply too right. Shi Tao not only has a very good understanding, but also is very fascinated by what he is engaged in. He is responsible for several things, and the progress is very good, and he is also very thoughtful about the next step. This is also the reason why the two were able to talk for two days in a row.

At present, Shi Tao is mainly focusing on setting up navigation stations along the coast and meteorological stations in various localities to carry out national geological surveying and mapping, surveying and mapping of sea lanes, and popularizing marine electronic equipment.

After two or three years of hard work, many navigation stations have been installed along China's coast. There are Lushun Laotieshan at the top of the Liaodong Peninsula, Niangniang Palace at the mouth of the Liaohe River, Shanhaiguan, Tianjin Weitanggu, Shandong Dengzhou (Penglai), Shandong Gaojiao, Huaihe Estuary, Yangtze River Estuary, Taizhou, Fuzhou, Chaozhou, Huizhou, the southern end of the Leizhou Peninsula, the north and south ends of Hainan Island, Lingao Sanya, the Honghe Estuary Nanding, Hoi An Port, Cam Ranh Bay, the top of the Indochina Peninsula, Malacca, as well as the north and south ends of Luzon Island, the two ends of Xiaoliuqiu (Taiwan Island), and Jeju Island. The next step is to build navigation stations in North Korea, Japan, and the South Seas.

In fact, the density of the navigation station does not need to be so high, but Zhang Zhimu didn't say it, let Shi Tao do it first, and each navigation station can also train some people to come out.

Shi Tao raised a question, Zhang Zhimu felt very good, he said that the current radio detector is very easy to use, but there is a problem that the resolution is not high, the current method of increasing the radio frequency to improve the resolution is difficult to make progress, because the frequency is high, the components are not supported, especially when the real power is large, it is not good!

Zhang Zhimu knows that when the radio reaches the microwave frequency, it must use microwave devices. So he said to Shi Tao: "I will study the matter of the radio detector with Yang Chang." We have to use microwave technology to further increase the frequency of radio detection. ”

However, the navigation equipment used by Shi Tao's ship was still very troublesome to use, and they had to measure the direction of the two navigation stations, and then use the method of the map to make the position of the incoming ship on the map.

Zhang Zhimu told Shi Tao that with the advancement of computer technology in the future, these things can be calculated by computers and displayed directly on the screen, and the position and route of the ship can be displayed in real time.

Shi Tao said: "I'm really looking forward to this day! ”

In addition, Shi Tao said that now they have built more than 50 weather stations across the country, and the main mountains are the focus of this year's construction of stations. The meteorological building can be completed this year, but they are almost all in place. Weather forecasting has also begun to be carried out on an experimental basis. For example, they can now roughly predict when they will be able to get to where based on the speed of the Cumulonimbus clouds. This kind of thing, which seems very simple, is already a great thing in this era, which requires the synthesis of data measured in many places to do, involving measurement, communication, calculation and many other work. Zhang Zhimu knew that this showed that Shi Tao and his meteorologists could already start coordinating their work! That's a great step forward.

Zhang Zhimu said: "The next step is to build a mathematical model of aerodynamics with Mr. Lu Bingyi's students who are engaged in mathematics and physics. In particular, in the future, you will be able to use a computer to also perform meteorological calculations. ”

"Oops! Meteorological things can also be calculated by computer? Shi Tao was also very happy to hear it.

"Of course!" Zhang Zhimu said, "In the future, our radio detectors will also be able to detect the height, thickness, and speed of cloud cover, and even in the future, we will be able to set up radio detectors on those islands in the South China Ocean to detect the location and direction of tropical storms." Provide early warning for the vessels we sail. In this way, the dangers of navigation can be greatly reduced. ”

"Oh my God! Mr. Zhang, if this danger can be solved, it will be the gospel of all seafarers! Shi Tao said.

"What you're doing now is you're constantly moving in this direction!" Zhang Zhimu said, "And! We are now building several airstrips in various places. Relief planes also played a big role this year. You're also going to have to put weather stations on each runway. Build even if it's unattended! From now on, they will be our airfields all over the world. Aircraft have very high meteorological requirements. So get ahead of the curve! ”

"Good! I'll arrange this when I get back! Shi Tao said.

Although Zhang Zhimu promised Shi Tao to solve the problem of radio detector accuracy for them, Zhang Zhimu still felt very embarrassed to teach Yang Chang and others a course on microwaves. In the radio major, microwave and electromagnetic field, microwave and antenna, are all very difficult courses. It has been said that it is not too much to say that radio majors challenge all areas of mathematics. Unlike computer science majors, it is difficult to complete these courses without a good foundation in mathematics. Therefore, after graduation, many people who learn radio change their careers to engage in computers, but very few who study computers can change their careers to engage in radio, and the difference is in mathematics.

After graduating, Zhang Zhimu basically did not engage in microwave and radar things, at most he installed some ground station antennas. If you want to summarize the lesson plan of microwave, the difficulty is not ordinary. However, this thing must be done, and whatever can be done will be done. Zhang Zhimu knew that even a simple hint was very important for Yang Chang and them to engage in radio, because it pointed out the direction and could save them from taking many detours.

For this reason, Zhang Zhimu told Yang Yulin to refuse many unimportant things for him, and he had to calm down and organize the lesson plan.

There are no reference books, and many of the formulas needed have to be derived from scratch. Those waveguides, resonators, filters, couplers, antenna lobes, all need to be remembered little by little. Zhang Zhimu thought it was very funny, when he studied this course, he didn't know what he learned, but now he wants him to give lectures to others, is it because he has made up for his own foolishness? These dizzy things need to enter a state to slowly figure it out, and when they figure it out, there will be interest. It seems to be easier to go any further. In the process of derivation, it seems that the original sleeping memories can also be slowly awakened, and it turns out that many things that I thought I had forgotten for a long time can be recalled.

The teachers who gave me these classes turned out to be working in the front line of scientific research, and there were some things they talked about at that time, which the students may not have taken seriously at the time, but now it is their turn to use them, and I really want to thank them for their tireless explanation.

These are the crystallization of human wisdom, especially when they were obtained hundreds of years ago, and they are even more incredible.