Red Soviet Union

The night sky is extremely dark. For Nighthawk, the night is its stage. It is like a ghost in midnight, silent.

After taking off from the Sao Paulo base, headed south all the way. When it was about to leave the airspace of Brazil, it met with the air tanker and finished the refueling operation. A group of 20 Nighthawks passed through the airspace of Uruguay and headed straight for Buenos Aires!

Before entering the airspace of Uruguay, Whitley looked to both sides for the last time, making sure that all the navigation lights that were turned on during refueling were turned off. At the same time, he also helped the nearby aircraft to confirm. This is a habit developed through many times of training. Oh, if you still turn on the navigation lights after entering the battlefield, you will be shot down by the opponent's anti-aircraft guns!

The Nighthawk can remain invisible in the air thanks to its unique airframe design. Its maneuverability is quite poor. If the navigation light is on and it is visually aimed, it will die in the hands of ground anti-aircraft guns.

At that time, it will be extremely wronged.

Keep sailing south! Along the way, radar beams were constantly shining on the plane. Since Uruguay is a small country, Argentina's long-range radar can also shine on the plane. However, none of the radar beams changed from scanning to locked state. , which means that the Argentines can't find their side at all!

The Nighthawk continued to fly in the sky, and after passing through Uruguay's airspace, Buenos Aires was on the opposite side!

The Argentine capital was getting closer and closer, and the precise navigation equipment on board was constantly working. In Fray Bentos, they checked the navigation coordinates for the last time, preparing to enter the route before the bombing. There was only a dim light blue glow in the cockpit. The radio remained silent, everyone was driving their plane calmly, no matter how many anti-aircraft missiles and anti-aircraft guns there were below, they couldn't do anything to them!

Buenos Aires, the capital of Argentina, is located on the HN coast of La Plata, the southeastern coast of South America, and Uruguay on the other side. Such a capital actually does not have any defense in depth, whether it is from the sea or from the north, directly can bomb!

If it is a landlocked country, countless anti-aircraft guns are placed along the way, which is also a threat to them, but now, bombing Buenos Aires is just a task as easy as training!

Of course, they didn't know that at this time, in the north and south of the city of Buenos Aires, on the chassis of two field trucks 20 kilometers apart, the meter wave radar antennas were erected and were constantly scanning watching them.

This kind of meter wave radar is very similar to the later Russian Dongfang-E meter wave active phased array radar. Long bar shape, huge size.

This is the hard work of the Soviet air defense department for several years,

An artifact invented against stealth aircraft!

All this is also due to General Andre, because Andre predicted the huge advantages of stealth aircraft in advance, and Andre also pointed out the direction, using meter wave radar to fight against stealth aircraft is the most suitable Choice, therefore, Soviet scientific and technological personnel continued to study, and finally invented the current meter-wave phased array radar!

Meter wave radar was very popular during World War II to detect enemy aircraft invasion. However, after World War II, meter wave radar was gradually eliminated because of its huge size!

Meter-wave radar refers to the fact that the radar waves emitted by the radar are on the order of meters, and the radar antenna needs to radiate a complete wavelength. The size of the radar antenna must exceed the wavelength, and it must meet various requirements such as gain. demand, then the scale needs to be larger, which has led to the fact that radar antennas are several meters, or even on the order of tens of meters. For example, the length of the current radar antenna is more than ten meters! Such a radar antenna is very inconvenient to deploy and operate.

At the same time, another defect of meter wave radar is that the accuracy is not good. Generally speaking, the error is on the order of meters! Like the meter wave radar in the 1950s, the error is hundreds of meters, or even kilometers! In this way, the target can only be found, and the precise position of the target cannot be determined at all. At the same time, the missile cannot be guided!

Therefore, with the advancement of technology in the later stage, the wavelength of radar is shortening rapidly, and centimeter wave, millimeter wave, and even microwave radar are popular.

However, it is necessary to take out the meter wave radar now, because the meter wave radar happens to be the nemesis of stealth aircraft!

The reflective surfaces of stealth aircraft have slopes, which just reflect radar waves to other places. At the same time, stealth aircraft also have wave-absorbing coatings. However, these are for short-wavelength radars, meter-wave radars, Born with the ability to spot stealth aircraft!

However, another defect of the meter wave radar seems to be insurmountable. It can only detect stealth aircraft, but cannot accurately mark the direction of stealth aircraft, let alone guide missiles.

The common way for missiles is passive radar seeker, that is, semi-active radar guidance. It is simply unimaginable to install a radar antenna with a diameter of more than one meter in the warhead of the missile!

Therefore, another solution is needed! And the idea put forward by Andre is networking!

One meter wave radar is not enough to ensure sufficient accuracy, but two meter wave radars are separated by a certain distance, and then through networking, the signals discovered by the two radars can be combined to greatly increase the accuracy!

This is like GPS. The United States is divided into two levels: military and civilian. The accuracy of civilian use is low. Therefore, someone came up with a better way, that is, differential GPS, which corrects navigation errors by using base stations to calibrate in advance. , which greatly improves the accuracy, which is the result of the networking principle. Ordinary civilian GPS has a positioning accuracy of 25 meters, but with this principle, the rough position difference can also reach the order of meters, and the most accurate carrier phase difference can increase the accuracy to the order of centimeters!

Now, this specially improved meter wave radar, the detection accuracy of a single unit is 300 meters, two meter wave radars, by accurately measuring the radar coordinates, comparing the data of the two radars, and performing differential calibration, such detection accuracy, At least it can be increased by a hundred times, reaching the order of magnitude of meters!

Although the meter wave radar cannot guide missiles with semi-active or active radar seekers, the method of command guidance is enough!

Between these two radars, that is, at a place ten kilometers away, in the center of the city, three Sam-3 air defense missile positions are deployed, arranged in a trapezoidal shape, guarding the north of the Argentine capital. The direction of the American stealth fighter that may appear! (To be continued.)