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Text Chapter 133

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    Blue Sky University of Science and Technology¡¯s new education and new scientific and technological concepts.  Cultivate outstanding graduates.  The more than a thousand fresh graduates here every year have become the most sought-after talents in the country.  The graduates of Blue Sky University of Science and Technology are like seeds, bringing with them brand-new knowledge and new ideas from Blue Sky University of Science and Technology, playing a major role in science and technology in various fields.  It provides a guarantee of cutting-edge talents for China's continued development in the future.  This university publishes thousands of papers in the world's top science and technology magazines every year, and tens of thousands of patents are registered in countries around the world every year.  This kind of high-yield scientific and technological achievements and technological wonders is unique in the history of world science and technology.  This university has become famous at home and abroad in just two or three years, becoming the most famous university in the field of natural sciences in the world.  ¡¾¡¿ Being able to attend this university has become the biggest dream of all young people in the world who are interested in making a difference in the field of natural sciences.  Five years later, when the Beijing branch of China Blue Sky University of Science and Technology faced the world to recruit international students for the first time, it faced a high tuition fee of US$100,000 per year.  There are still tens of thousands of outstanding students around the world who have signed up under the sponsorship of their countries and famous large companies.  They passed the most stringent examination in the country, and finally some of them passed five tests and defeated six generals. With various most authoritative letters of recommendation, they went to Beijing to take the Chinese Level 6 examination promulgated by the Ministry of Education of China.  They will also face the harshest elimination rate of 80%.  Political dignitaries and economic giants from various countries, in order to gain access to students in their own countries and companies, even sent telegrams of "back door" recommendations to the supreme minister and prime minister.  Some countries even use "diplomatic means" to keep the prime minister from inviting invitations throughout the day.  Faced with this situation, we had no choice but to expand our enrollment by four more.  And promised to recruit more talents next year.  ""With transistors, modern industry will be given wings to take off.  It made it possible to produce some products for later generations.  Radar is the eye of a country¡¯s armed forces.  It is the most important sensor in the national early warning system.  In later wars, due to the advancement of radar technology, the war started when the two warring parties were tens of kilometers or even hundreds of kilometers apart, and people could not see each other. In modern warfare, people use radar to achieve visual acuity.  away from the war.  Both warring parties were sitting in front of computers, as if they were playing video games.  Destroying each other, killing each other.  In the wars in North Korea and Taiwan, the base only achieved victory after repeated battles, defeating enemies with an absolute numerical advantage, obtaining maximum war benefits at the minimum cost, and winning victory for China.  The most important reason is that we have advanced radar systems.  It plays a decisive role in the war and has an air force.  The airborne radar of the early warning aircraft and the Condor pulse Doppler fire control radar on the research aircraft and the old Flying Leopard fighter aircraft.  On the battlefield, our military enjoys the absolute advantage of unilateral information transparency. It is conducting an asymmetric war, and the initiative of the war is completely in our own hands.  This fully illustrates the importance of radar's status and role in war.  Vigorously develop my country's radar system, completely change China's backward state of having no radar industry, and fill the gap in my country's radar industry.  It is now the top priority of the base to install a vigilant eye on China's thousands of miles of maritime territory.  At the end of the year, the "Radar Research Institute" was formed by the deputy director of the base's radar station, a radar and electronic countermeasures expert, senior engineer Liu Wei, several engineers at the station, radar technicians from the Air Police No. 4, and the Semiconductor Research Institute. In the Blue Sky Settled in the Science and Technology City, my country's radar equipment industry began to develop from scratch, from weak to strong, and China, the sleeping lion in the East, opened its eyes to patrol the blue sky and blue sea, watching the dawn. The first use of radar in the world was in February 1998. In order to defend against attacks by Luftwaffe aircraft on the homeland, the British used conventional radio waves of Tianmi wavelength emitted by a radio station equipped with a receiver in advance. In the equipment truck, the researchers saw the echo of the radio signal reflected by the aircraft on the monitor, so the working principle of radar is similar to the biological characteristics of bats in nature. Bats can operate in dark and narrow spaces. The reason why bats can fly freely, avoid collisions, and accurately capture prey in the air is because they have a natural "radar". When bats fly, they emit a very high-frequency sound wave, which will be reflected back when it encounters obstacles. By receiving these echoes, you can determine the azimuth and distance of obstacles. Each bat has its own inherent frequency, and each other can distinguish their own sounds without interfering with each other. Radars are composed of transmitters, antennas, receivers, and displays. It consists of a transmitter that emits very short radio waves. When the radio waves propagate, they can be reflected back when encountering obstacles. The receiver can then detect the presence of the target and determine the direction and distance of the target. , altitude position, etc., and displayed on the screen. The Radar Research Institute, the first radar production factory in China, Xiaolantian Electrical Appliance Factory, was established in an unfinished Japanese factory in Shenyang. From the beginning, there were only Jinlai people. .Later expanded to 2 songs and multiple people, becoming meThe first team in China dedicated to radar research and production.  At the same time, report to the Military Commission.  The Chinese People's Liberation Army Radar Technology Institute was established in Shenyang to train the first batch of radar operation, maintenance, design and production professionals for our country.  Director Liu Wei organized the comrades of the Radar Research Institute.  After careful discussion and analysis of the characteristics of each generation of radar, combined with my country's current production capacity, it is believed that the first generation is mainly non-coherent two-coordinate radar, which has low reliability and anti-active interference capabilities.  The equipment period ranges from the birth of the air defense intelligence radar to the end of the 19th century.  It is an electronic tube product.  This size is huge.  Radars with lagging performance must not be used as imitation products.  The second generation is mainly based on fully coherent three-coordinate radar, which has significantly enhanced anti-interference ability, but its reliability is still low. It was equipped from the 1990s to the early 2000s.  This kind of radar is a primary transistor product and cannot be used as a development direction.  The third generation is mainly based on all-solid-state three-coordinate radar, which realizes fully automatic admission and fully automatic networking.  As well as being less manned and unmanned, the electronic warfare environment adaptability and target environment adaptability have reached a high level, and it has a certain ability to resist stealth aircraft and anti-radiation missiles.  The equipment period was from the mid-1940s to 2000, which was before the base reached this era.  The main air defense screening equipment of our army.  The fourth-generation air defense intelligence radar integrates surveillance, interception, tracking, identification and fire control support as well as collection of damage assessment information. Its detection range, accuracy, electronic warfare capabilities, target recognition and adaptive capabilities, and reliability are all in one.  With the improvement of quality, Yinshiji.net began to be equipped and used.  Representative models include the multifunctional active phased array radar used by the U.S. National Missile Defense System, the British "Commander One" multifunctional active phased array radar, etc. Everyone agrees that the fourth generation of air defense intelligence radar is currently in development. It is not yet It is too difficult to meet the conditions and it is not necessary. It can be used as a technical reserve. We have carefully studied the current production conditions and possibilities. We believe that the research institute now has the ability to produce complete radar machines and decided to directly produce them in the future. The third-generation main battle radar equipment of the ground radar is used as a sample, and the direct production of pulse radar plays a dominant role in later generations of radars. Although there are many difficulties in producing this kind of radar, these difficulties are not insurmountable. With the development of China, The establishment of Silicon Valley and the rapid development of science and technology have promoted the development of my country's radar equipment in the direction of transistor integrated circuits. Everyone agrees that great efforts are made to imitate the third-generation pulse radar because this kind of radar can immediately be integrated with the existing equipment of the base. It is easy for radar to achieve accurate ranging, and the received echo is during the rest period of the transmitting pulse, so the receiving antenna and the transmitting antenna can use the same antenna. Measuring the distance actually measures the time difference between the transmitting pulse and the echo pulse, because the electromagnetic wave uses light. Propagation can be converted into the precise distance of the target. The target azimuth is measured using the sharp azimuth beam of the antenna. The target height can be calculated based on the elevation angle and distance. During relative motion, the frequency of the target echo received by the radar is different from the radar radiation frequency. The difference between the two is called the Doppler frequency. One of the main information that can be extracted from the Doppler frequency is the relationship between the radar and the target. Range change rate. When the target and interference clutter exist in the same spatial resolution unit of the radar, the radar can detect and track the target from the interference clutter by using the difference in Doppler frequency between them. It can detect long-distance targets day and night, and is not blocked by fog, clouds and rain. It has the characteristics of all-weather and all-weather, and has certain penetration capabilities. Moreover, they include long-range three-coordinate radar and low-altitude radar. For imitation and production purposes, direct production can detect aerial targets tens of thousands of meters high within hundreds of kilometers, and can also see low-altitude targets tens of meters high. As soon as this batch of radars appeared in front of the world, they won a round of applause from the army, navy and air force. This batch of radars is of absolute significance to safeguarding our country's strategic security. This batch of radars has been tested and has strong combat survivability and is able to withstand strong electronic interference. They are adapted to combat requirements under current conditions; they have strong environmental adaptability. Compared with similar equipment of later generations, their performance is slightly inferior, but they can fully meet the needs of the current stage; their size is also much larger, and there is no large-scale integration of transistors. With the development of chips from the Semiconductor Research Institute, after the launch of the "Blue Sky" series of processors, chip integrated blocks are used to replace the current circuit board welding. The size will naturally be reduced and the performance will be improved. However, it is not as good as the radar of this era. It is already much smaller, and its reliability and anti-active interference capabilities are unmatched by radars of this era.  A batch of products are installed at naval and air force bases in Hainan Island, Taiwan and Ryukyu.  Perfectly adapted to subtropical climates.  my country's division-level radar defense network has been built on my country's first island chain, allowing our country to detect air and sea targets in the Pacific in a timely and accurate manner.  Tests have proven that these radars can be deployed and used in complex geographical environments such as islands, mountains, deserts, and Gobi.  for meIt provides early warning and detection intelligence support for ?'s air offensive, air defense operations and daily air defense; it also provides battlefield joint early warning and surveillance intelligence support for integrated joint operations, meeting the basic needs of our military's operational defense.  The comrades of the Radar Research Institute did not let up their progress for a moment. Later they manufactured for the navy, naval warning radar, ship search radar, search and attack radar, missile guidance radar, torpedo speedboat attack radar and torpedo submarine attack radar.  radar.  They have carried out trial production and production of various radars focusing on the future development of my country's strategic weapons and supporting the modernization of conventional weapons and equipment for the army, navy and air force.  At the same time, we have also carried out the development of corresponding radars for the future launch of intercontinental missiles, submarine missiles, submarine underwater launches and geosynchronous satellite launches.  In terms of ballistic missile early warning systems, large-scale long-range tracking radars, large-scale phased array radars and line-of-sight test radars have been developed.  At the same time, a number of radars for weapons were also developed based on later samples, including airborne fire control radar, missile guidance radar, bombing targeting radar, Doppler navigation radar, ranging radar, navigation radar, radio altitude  watches and bombing radars, etc., which are prepared in advance for the production of advanced fighter aircraft.  Let China stand out among the heroes on land, sea and air, and see who can compete with it in the world.  At the same time, the Radar Research Institute ate the food from the bowl, looked at the food in the pot, and set a long-term development direction for itself. To be honest, those in front are after all imitating products of later generations, with ready-made drawings, data, and even actual samples.  Just take it as a "copycat." That's it. The difficulty is to create material conditions for "stopping", and the real challenge is the long-term development of the five modernization goals: "Broadening of the frequency band, the operating frequency band will be expanded from the traditional microwave frequency band  The entire frequency domain; the platform integrates air, space, sea and ground. The working platform will expand from being mainly ground-based to sea-based, airborne, airship-borne and satellite-based platforms, and form an integrated system that combines ground, sea, air and space.  ; The means are diversified, and the detection means will develop from mainly radar to the combination of radar, infrared, laser and other multiple sensors, from mainly active to the combination of active and passive; the functions will be comprehensive and integrated, and the main functions will be  From the focus on early warning detection to the integration of early warning detection, reconnaissance, surveillance, and strike guidance; multiple detection resources are integrated and networked.  Let China dominate the world forever in this field within the foreseeable time.  Just trained!
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