After making the decision, Bai Huawei did not delay and asked Liu Zunling to make arrangements.

In fact, it means using satellite communications stations to contact the rear, so that the Air Force can take immediate action and arrange bombers to deal with the landing fleet that remained near the transit island.

Fortunately, this is just a very short command.

When developing communication satellites, the Imperial military attaches great importance to confidentiality, including electromagnetic radiation generated when sending and receiving information.

To put it bluntly, it is necessary to try to reduce the radiation intensity, preferably not generate electromagnetic radiation.

For this reason, for a long time, the Imperial military placed their hopes on laser communication technology, that is, lasers have excellent directionality.

In addition, laser communication efficiency is much higher than that of radio.

At that time, laser communication seemed very promising and had a tendency to replace radio stations.

In fact, it was research in the field of communications that cultivated a large number of professional talents, laying a solid foundation for the later development of laser weapons.

Unfortunately, the application of laser in the field of communications has not been so smooth.

Compared with radio communication equipment, laser communication equipment has both outstanding advantages and uncoverable disadvantages, such as being extremely susceptible to weather. In the atmosphere, the signal intensity will decrease rapidly, which is only suitable for short-distance communication and not long-distance communication.

This feature is very obvious in a secret project of the Military Intelligence Bureau.

Eight years ago, the Military Intelligence Bureau purchased the most advanced supercomputer at that time to analyze and process intelligence information. Unfortunately, the Military Intelligence Bureau has no place to install this supercomputer, and the environment is not very good. As a result, the Military Intelligence Bureau built a building near the National Forest Park in the suburbs about 30 kilometers away from the headquarters, which was specially used to place this supercomputer.

Now, communication has become a big problem.

Although cables can be laid, the delay generated by wired communication will reduce the working efficiency of the computer and require a faster communication system.

It is in this context that laser communication technology has gained the opportunity to perform.

Funds are provided by the Military Intelligence Bureau to build a high tower at the headquarters and the computing center to place laser communication equipment specifically. Because lasers are transmitted in a straight line, the Military Intelligence Bureau also purchased land near the communication lines through relevant institutions to ensure that there are no tall buildings blocking the optical path.

It must be admitted that the transmission speed of laser communication equipment is indeed very fast, several orders of magnitude higher than that of radio communication equipment.

During a test conducted by the Military Intelligence Bureau, the laser communication device sent 10GB of data information in just 1 second, while the data radio stations at the same time did not even have 10MB. For example, the No. 15 data link that is commonly used by the Imperial Army, ideally, can only send 1MB of data per second. The No. 16 data link that is under development and has not yet been officially equipped has only reached 10MB per second.

However, the disadvantages of laser communication are also prominent.

In addition to point-to-point linear transmission, it is extremely susceptible to weather and the signal strength will decrease rapidly.

In fact, this system has only been working for 3 years.

It is not that there are more advanced communication technology, but that the production process of optical fiber has been solved and can be mass-produced.

Affected by these factors, laser communication technology was not considered when developing military communication satellites.

To be honest, the Imperial Air Force conducted a less successful test. It launched a laser communication satellite, and the test results showed that to obtain sufficient signal strength, the satellite can only be deployed in low-Earth orbit, and hundreds of satellites need to be networked to cover the world.

Obviously, the cost of networking is unbearable.

In addition, satellites in low-Earth orbit are easily attacked and are certainly unreliable in global wars.

It was after these attempts that the Imperial Military temporarily gave up laser communication technology and turned its focus to radio communication technology.

Compared with laser communication technology, radio communications have the biggest problem in addition to the information transmission speed not being fast enough, which is that it produces electromagnetic radiation.

That's why many fleet commanders do not like to take the initiative to contact the rear.

Although after decades of development, the radiation generated by the most advanced AV radio stations during operation has become very weak, and their signal characteristics can be changed through frequency hopping to reduce the probability of being discovered and intercepted by the enemy, theoretically, the enemy's communication satellite can receive the radio signals that the enemy's communication satellite can receive. Even if it cannot be cracked, it can measure the approximate location of the signal source.

To be said, surveillance on military communications satellites of hostile countries, especially major hostile countries, is not a rare thing.

The Imperial Air Force has been monitoring communication satellites between the Newland Republic and the Triomphe Empire, especially large military communication satellites in geosynchronous orbits.

These satellites often operate in orbit for more than 10 years, and are mainly used to receive and forward important information.

The key is that the geosynchronous orbit is 36,000 kilometers away from the ground, exceeding all land-based, sea-based and air-based anti-satellite weapons. Even the satellites used to destroy satellites still require several orbital maneuvers to reach the synchronous orbit, which does not have much tactical value.

Obviously, geosynchronous orbit is the safest and an ideal location for deploying communication satellites.

In theory, only 3 geosynchronous orbit communication satellites are needed to cover areas other than the North and South Poles, which is equivalent to 80% of the earth's surface area.

In fact, no one went to the Antarctic or the Arctic to fight.

In order to strengthen surveillance, a separate signal receiving device was installed on the third generation of geosynchronous communication satellites to measure the approximate direction of intercepted radio signals. The key is that the Imperial Air Force has always adopted a strategy of following the deployment, that is, to deploy a communication satellite of its own near the geosynchronous orbit communication satellites between the Republic of Newland and the Trioman Empire, and the deployment distance is getting closer and closer.

Since its development, the distance between the two has been less than 100 kilometers!

For satellites flying at speeds of tens of thousands of kilometers per hour, this is a distance within reach.

In order to avoid unnecessary troubles, such as large-scale wars caused by small frictions, the Liangxia Empire, the Tauman Empire and the Republic of Newland jointly initiated the establishment of the International Space Organization. Its main functions include allocating orbital resources and ensuring that all countries have the right to utilize outer space.

This time, the signal is forwarded through a communication satellite deployed in a geosynchronous orbit.

A very short telegram, known as the "Battle of North Hovay", kicked off the first large-scale naval battle on the eastern battlefield of the Third Global War.

When the order was issued, Bai Huawei certainly did not expect that the Air Force would be so proactive.

As early as the afternoon of the 12th local time, that is, on the evening of the 12th of Bai Huawei, 40 "H-9Ds" deployed in the Nordic Islands were launched to be precise, and these bombers were all equipped with 24 heavy anti-ship missiles.

That's right, it's KD-30B.

This heavy anti-ship missile was invested and developed by the Navy alone, and the basic type is an air-launched cruise missile that can be carried by the "Occurrence-12".

However, I encountered a lot of trouble during the development process, mainly because the performance indicators set by the Navy were too high.

For example, the quality must be controlled within 1,000 kilograms and the range of 1,500 kilometers. The quality of the warhead should be at least 500 kilograms, at least not less than 250 kilograms. Invisibility requirements will be added later, and the mission can be re-planned during flight.

Obviously, the contradiction between mass and range is difficult to resolve.

What's even more terrible is that it has to be stuffed into the "Occurrence-12" bomb bay and can carry at least two.

As a result, the KD-30 has been developed for almost ten years and has never been able to pass the naval acceptance, or has not met the performance indicators proposed by the navy at all.

As the "Occurrence-12" project entered the prototype test flight stage, the Navy had to settle for the second best.

In fact, it means reducing performance indicators and giving priority to the development of air-fire anti-ship types that do not have very high performance requirements.

The result is that the air-firing anti-ship type was first developed, that is, it passed the test and acceptance.

If you want to say it, the key is that anti-ship type does not require too long range.

Although it is not difficult to develop an anti-ship missile with a range of 1,000 kilometers or even 1,500 kilometers and there are no technical obstacles, in actual combat, it does not mean that the longer the range, the better. The best is the best, but it is also affected by other factors.

To put it simply, it is actually the time it takes for an anti-ship missile to be launched to hitting the target.

Take the KD-30B for example. Even under ideal circumstances, the detection distance of large warships is only 40 kilometers. Because ideal conditions cannot occur, the active search range of anti-ship missiles must be smaller in actual combat. This means that if the enemy ship sails more than 40 kilometers before the anti-ship missile is launched, then the KD-30B is likely to fall off the target. Generally, the speed of the warship in combat is about 30 knots. Even if calculated based on 30 knots, it will take about 45 minutes to sail 40 kilometers, and this time determines the range of the anti-ship missile.

For subsonic anti-ship missiles, they can fly about 600 kilometers in 45 minutes.

That's why the KD-30B's maximum range is only 650 kilometers.

Obviously, this range is not long, but it is enough.

To be honest, the Imperial Navy has never attached much importance to supersonic anti-ship missiles, mainly because supersonic anti-ship missiles are too bulky.

If other performance indicators are the same, just increase the speed to Mach 3 and the mass must be increased by more than 2 times!

Obviously, anti-ship missiles weighing 3 tons cannot be mounted by tactical aircraft, but even if they are deployed on warships, they will take up a lot of space.

The key is that no matter how good the supersonic anti-ship missile is, its combat effectiveness cannot reach three times that of the subsonic anti-ship missile.

Even if the price of supersonic anti-ship missiles is not as high as three times that of subsonic anti-ship missiles, the efficiency-cost ratio may not be very poor, but in large-scale wars where supersonic anti-ship missiles are required, especially global wars, the least thing to consider is the efficiency-cost ratio.

No matter how expensive the missile is, it is cheaper than the enemy's warships.

In small-scale wars where efficiency ratios need to be considered, subsonic anti-ship missiles are also competent, and their combat efficiency will not be much lower than supersonic anti-ship missiles.

As for the ability to obtain a longer range in theory, it is only theoretically.

Simply put, anti-ship missiles with a speed of 3 times the speed of sound have a maximum range of 3 times the speed of subsonic, which means they can reach 1,800 kilometers. The problem is that to obtain this range, the mass will be close to 10 tons. Even if the latest technology, such as lighter composite materials, cannot be reduced to less than 8 tons. Such bulkyness is not only impossible to be carried by a tactical platform, but it will definitely be very expensive.

In fact, the Imperial Navy has long done argumentation and research on this aspect.

The final conclusion was that under the existing technical conditions, aerospace supersonic anti-ship missiles were not the best choice. Even if they could solve the guidance problem and make the hit rate reach the indicators proposed by the navy, there would be more ideal or more cost-effective choices.

For example, ballistic missiles are used as vehicles to directly send warheads with anti-ship capabilities to thousands of kilometers away.

Unfortunately, due to various factors, the Navy's research has ended here.

The main reason is that when conducting relevant arguments, the Navy has no available ballistic missiles and has no priority to develop ballistic missiles. If it is proposed that ballistic missiles can be used to perform anti-ship missions, the Air Force and the Army will definitely come and take away projects belonging to the Navy.

However, there are also difficult technical problems here.

That's why the Western Continental Group has made every effort to develop supersonic anti-ship missiles, and even the Republic of Newland has made a difference, and the Imperial Navy still insists on using subsonic anti-ship missiles.

However, the KD-30B is not an ordinary anti-ship missile.

This is a stealth anti-ship missile!

It has been mentioned before that the most serious problem faced by the Imperial Navy is not how to kill the enemy's warships, but how to save their own warships.

In other words, it means intercepting anti-ship missiles.

While studying how to intercept anti-ship missiles, the Imperial Navy discovered a very important issue.

Relatively speaking, the difficulty of timely discovering anti-ship missiles is far more difficult than intercepting anti-ship missiles. In other words, as long as the fired anti-ship missiles can be detected in time, relying on the existing air defense system, it can generally be successfully intercepted, and appropriately improving the air defense system can also achieve a relatively ideal interception probability.

It is precisely this that the Imperial Navy invested heavily in developing phased array radars used at the "Qingzhou" level.

However, this discovery also made the Imperial Navy realize that increasing the probability of penetration of anti-ship missiles does not necessarily have to rely on speed to reduce the signal characteristics of anti-ship missiles, that is, reducing the probability of being discovered, can also improve penetration efficiency and reach a relatively ideal level.

This is the theoretical basis for the development of stealth anti-ship missiles.

In fact, this principle is not difficult to understand. Unfortunately, not everyone feels it is necessary.

The reason is also very simple. Compared with warships, even compared with fighter jets, the target characteristics of anti-ship missiles are very weak and have strong concealment. For example, the RCS value of anti-ship missiles of the AGM-84 "harpoon" level generally does not exceed 0.1 square meters, while the RCS value of the A-7 light attack aircraft exceeds 20 square meters, and the RCS value of the F-14B heavy fighter is about 50 square meters.

However, in the face of increasingly advanced air defense systems, the signal characteristics of anti-ship missiles are already obvious enough.

Then, theoretically reducing the RCS value by several orders of magnitude will inevitably improve the penetration efficiency of anti-ship missiles.

As for whether this theory is correct, a conclusion will be drawn soon.
Chapter completed!