With the in-depth research of semiconductors and radar, China's radar technology has also developed rapidly, and advanced radars appear almost every few months, from the very humble beginnings to the largest sea-based exploration radar currently in use, which can search 400 kilometers and search for at least 12 targets at the same time. Pen % fun % Pavilion www.biquge.info

However, such a radar is quite large in size and weight, and it must be on a warship of more than 40,000 tons before it can be loaded, and the battleship must also be modified according to the volume of the radar, otherwise, it cannot be loaded on the radar.

This is also the most important modification of Chinese warships, after the refit, 4 of the 8 Fantasy class have radar, they will be with the other, form a two-boat formation, together become the core of a fleet, the Fantasy class has space for radar installation modification, in addition to the capital ship, Orion and aircraft carrier, there is not enough space, they can only load a little smaller, the detection range ranges from 100 km to 180 km radar.

Sea-based radars are so powerful, and the land-based radar on land is even better, because the antenna can be repaired to a very high degree, and the huge antenna brings enough sensitivity and measurement range, so that the detection range of the radar has reached the number of 850 kilometers, such a large radar is mostly used in large airports, air bases, and by the way, a large number of arrangements are also placed on China's borders and maritime borders, as long as the radar layout is completed, it means that as long as the radar is set up in key places along the coast of China, about 300 kilometers a, you can include the surrounding 500 kilometers of area to ensure the security of the national border, especially the security of the sea.

China's coastline is too long, There were 18,000 kilometers before, and now, with the annexation of Southeast Asia, Australia, and the islands in the Pacific Ocean, the length of the coastline may exceed 50,000, or even reach 100,000, such a huge coastline, the traditional method can not be used at all, only can rely on radar, otherwise the long sea frontier will become a sieve, as long as the enemy has a powerful fleet, can frantically strike China, just like the previous fantasy-class fleet sneak attack on the United States, flexible guerrilla warfare, do not choose to fight with the opponent's main fleet, but will take the opportunity to give the United States a fatal blow.

The study of ground-based radar has reached a considerable extent, 850 kilometers is enough, no more, it will be affected by the curved surface of the earth, it is easy to miss low-altitude targets, it is still inconspicuous, the future will be accompanied by the world into the era of the Air Force, it will be a huge loophole, a range of 300 kilometers, such a density is acceptable, China's core area, has been arranged according to 300 kilometers of radar stations, in the next 2-3 years, the surrounding islands, peninsulas will also be arranged radar.

The 500-kilometer early warning area, under the premise of the gunboat era of World War I, 500 kilometers is enough for the warship to go all out for 10 hours at a speed of 30 knots, even if it is placed in World War II, it is amazing enough, the combat range of the aircraft carrier is generally between 300 kilometers and 500 kilometers, 500 kilometers is enough for most fighters to fly for an hour, a huge distance, there is enough reaction time, whether it is to mobilize warships, or land-based aircraft, there is time.

Yang Yuanzhao rushed to the laboratory, this radar laboratory, is the key laboratory of Northwest University, covers an area of 300,000 square meters, consists of 18 buildings to form the research institute, is the largest research institute of Northwest University, Yang Yuanzhao walked up to the fifth floor, here is neither a sea-based project, nor a land-based project, but an air-based project, but also the first attempt of radar in the space-based project, miniaturized airborne radar project.

This is a huge branch, and even from the very beginning, it has directly departed from the previous land-based and sea-based systems, and has been established as an air-based project, and all the concepts and functions are to cooperate with aircraft in the air, mainly for the flight and air force to serve the radar.

Airborne radar has been quite common in later generations, even if it is the ******** of some propellers, it will be loaded, but it is based on the practice that radio technology has developed to the extreme, and now, it is still a very cutting-edge project, some large radars, can only be installed on land, not to mention, 300 meters, or even 500 meters of antennas, it is not ships and aircraft can solve, miniaturized radars, at most can only be loaded with heavy patrols, even light patrols are difficult, the smallest radar, It needs to occupy a position of 150 cubic meters and a minimum antenna height of 45 meters, generally speaking, the mast of the battleship can be reached by extending a little longer, but the volume is going to die, 150 cubic meters, which is basically equal to an area of more than 5 meters in length, width and height, and the space for light patrol is too small to accommodate such a big guy.

When the target of the radar is reduced from a heavy patrol of tens of thousands of tons to a plane of several tens of tons, the space and tonnage must be greatly reduced before it can be installed on the aircraft, that is to say, even if this radar project is installed in China's largest aircraft at present, the weight cannot exceed 20 tons, as for the volume, taking the strategic bomber as an example, it is best not to exceed the area of three by three by five, that is, it must be concentrated within 45 cubic meters. Only in this way can the radar be installed on the aircraft, so that the aircraft has a radar that can detect air targets.

From 150 cubic meters to 45 cubic meters, from hundreds of tons to 20 tons, whether it is volume or weight, there must be two or three times the weight reduction, this point, even if the Chinese radar project is very in-depth research, has created a large number of excellent performance radar under the premise that it is quite difficult, the aircraft is too small compared to the ship, too small to compare, even if it is a larger destroyer, it is better than the aircraft, the aircraft may only be able to compare with small gunboats and torpedo boats.

But even if it is 45 cubic meters and 20 tons, it is only a theoretical degree, the aircraft is a heavier aircraft than air, Yang Yuanzhao changed the engine, proposed different aerodynamic arrangements, so that the aircraft has a maximum take-off weight of more than 30 tons, or even 50 tons of powerful aircraft, but these do not mean that the aircraft can be loaded with things casually, after comprehensively calculating the bearing capacity and volume function of all aspects, the final data is much smaller than this.

Radar was previously divided into sea-based and road-based, there is a huge difference in performance, that is, land-based can not consider the weight, size, and even power, nothing can be achieved, the powerful effect of land-based radar, more than 800 kilometers of detection position, can track at least 12 targets, his strength is so strong, but also because of the huge volume, weight, coupled with dreadnought power, radar is a high power consumption thing, even the generator on the battleship, can not support the radar's full firepower, Not to mention that on the plane, the volume weight is one pass, and the power is another.

In this sense, the original radar to be installed on the aircraft, not only the problem of shrinking, must be redesigned, with a set of updated system and transmission and acceptance methods, can be installed on the aircraft, radar and aircraft, can be said to be a natural combination, relative to the ground, must use a huge antenna, the aircraft in the air, the range of acceptance is broader, as long as the problem of installation is solved, the radar is installed on the aircraft, the performance is better than on the ground.

Radar is actually for aircraft, has a unique advantage, after all, the radar is emitting a radio, radio, the higher the position, the wider the coverage of the right, the radar of the early warning aircraft of later generations, beyond the ground radar station, because of this, there is no dead angle in the air, in World War II, the most classic low-altitude sneak attack, under the early warning aircraft, it is difficult to appear, unless it is at sea, at a very close height at sea level, because of the absorption of sea level, it is difficult for radar waves to distinguish the aircraft from the background of the sea, For other land backgrounds, as long as you do a good job of reconnaissance and get a good radar map of the ground, it is not very difficult to distinguish him.

On the one hand, the speed of the aircraft is slow, and there are no missiles or the like, a lot of fighting still depends on the aircraft itself, and the radar in the rear is at most only to find the other party to prevent sneak attacks, and in the guidance of the fight, it is easy to make mistakes, and the effect of the radar is more used in reconnaissance and defense.

On the fighter plane, the radar also has a role, early detection of the opponent's target, with the help of clouds and other obstacles, directly attack the opponent's target, if the radar can be miniaturized, one or two cubes, hundreds of kilograms of weight, of course, the radar can be installed on the fighter, whether it is to help find the enemy in the fighting, or to assist in combat, has a huge role.

At this moment, it is very difficult to even install an airplane, it is almost impossible to install a fighter, the first aircraft to be equipped with radar, I am afraid it is a transport aircraft or a heavy bomber, once installed, the radar has an airborne early warning effect, even if it is only a role in detecting the enemy and reconnaissance, with the help of intercom systems and radios, you can guide the aircraft group on the front line.

It is more difficult to develop this kind of powerful, but small radar, any part of the aircraft, must have a strict counterweight, the radar may be mounted on the aircraft, there are dozens of tons of load capacity, the radar can not reach this weight, after all, the most important thing for the aircraft is balance, even if it has enough counterweight, it also needs to be made into a certain shape, so that the center of gravity is unified, and finally based on heavy reconnaissance aircraft and bombers, two weights are finally made, and one weight cannot exceed 11 tons, The other one could not exceed 7 tons, and the volume was even smaller than expected, in which case the existing radar had to be redesigned to accommodate this final weight. (To be continued.) )