However, Duke has not yet bowed to difficulties, put down the phone and began to ponder a new solution, since it is basically hopeless to go deep into the front line to capture the signal of the Global Hawk, then Duke thought about whether he could find another way to find a way to find the traces of drones like the Global Hawk.

Finding a way from the radar aspect is not Duke's forte, he now spends more effort in communication, the last time he studied the long-range wireless transmission of Bilem has accumulated a lot of experience, this time to study the transmission mode of the drone, the principle of the mainstream transmission mode of the drone is studied more thoroughly.

In principle, radio emission is electrode moment radiation that gradually decays with the expansion of the propagation range, so is it possible to determine the location of the radio emission source in reverse through this characteristic?

The answer is yes, theoretically there is a complete possibility, but due to the problem of accuracy, this method of determining the position has a large error, and can only determine a large range of approximate positions, which has little value in general military use. But now Duke doesn't want to find a definite location, he just wants to be able to continuously track the communication signals sent by the other party, so there is not much problem with a larger range of this positioning.

From the previous information, Duke can quickly locate what kind of signal is emitted by the Global Hawk, this algorithm can be done in a miniaturized computer, then as long as a set of such a surveillance system is developed, there are several points about ten kilometers apart to collect the Global Hawk signal, Duke feels that it can be located on a range that can be tracked, and it is not a fantasy for a fighter plane with a fast speed to track these signals.

After all, the coverage range of the Global Hawk communication signal is countless times larger than the physical volume of the Global Hawk aircraft itself, at least a large range of hundreds of kilometers, and Duke only needs to be able to track this effective communication range and ensure that it can continuously receive or send signals to the Global Hawk, and this goal is many times less difficult than finding the location of the aircraft.

Thinking of the feasibility of this plan, Duke immediately became excited, and his intuition thought that this direction should be feasible!

Just do it, Duke stored countless data in the Kerry space, during this time to study UAVs, the basic knowledge of electromagnetic waves in several bands of Global Hawk Communications is very profound, this formula for calculating the attenuation of signals with distance is a very ready-made thing, after Duke issued instructions and approximate schemes, Kerry quickly established a calculation model according to these basic formulas, if you can obtain the electromagnetic wave intensity difference of more than 3 monitoring points and the coordinates of these monitoring points, Theoretically, the location of the source can be calculated.

This principle is the same as satellite navigation, as long as the satellite navigation receives the signal difference of more than three different satellites, it can obtain the coordinates of the current position by calculation, because the position of the satellite is known, and now Duke has to do the same as this, the position of the monitoring point is known, and the position of the signal emission source is deduced inversely through energy attenuation.

In this case, the accuracy of the receiver's judgment of signal strength, as well as the humidity of the middle atmosphere and whether it rains will determine the accuracy of the position calculation, and like satellite navigation, the more monitoring points that can receive the signal strength, the more accurate the calculated position.

Based on the knowledge he had, Kerry built a mathematical model perfectly. Now all that's left is to implement this mathematical model, including a highly sensitive electromagnetic signal receiver to accurately measure the signal strength and identify which signals are from the Global Eagle and which are clutter in the sky.

Fortunately, through the previous decryption, Kerry has mastered the calculation method of completely resolving the Global Hawk communication signal, and can achieve real-time and accurate resolution under the current general ten-core CPU computing power. In terms of software, Duke's alternative Global Hawk warning system no longer has major technical obstacles, and there are no communication problems.

Now Duke needs to know what is the accuracy of the domestic electromagnetic wave signal receiver to measure the signal strength, and with this signal strength measurement accuracy, Duke can simulate and deduce what the calculation error will be.

This matter is very easy to solve, a phone call to Qin Tai Then, Qin Tairan inquired about the relevant parts, and quickly gave the current best level of what is about one by one, of course, this is directly related to the area of the receiver, probably according to the size envisaged by Duke, this monitoring system can probably position the Global Hawk within 50-100 kilometers above 3 monitoring points.

This distance is not very significant for finding the exact location of the global eagle deity, but for Duke, it is enough, and with this thing, Duke is able to establish a "I don't know where you are, but I can know that you are here." And will bite your tail. The monitoring system.

With such a thing, when Kerry can receive the Global Hawk's communication signal in real time and crack it, then it will no longer be an impossible myth to invade the Global Hawk and control it to fly to its designated location.

Qin Tairan was invited to Rongcheng, and after sitting down face-to-face with Duke, Duke said this about his thinking, of course, Duke would not disclose half of the situation, he just described the main architecture of the system, and showed Qin Tairan the feasibility of this scheme to track the Global Hawk in real time If the fixed monitoring point finds the traces of the Global Hawk, the fighter equipped with the same monitoring system can fly to the suspicious airspace for detection, and the fighter far exceeds the flight speed of the Global Hawk, Keeping up with the Global Eagle in a range of 50-100 km will not be too much of a problem.

"Duke, so if we dispatch more than 3 fighters with the system you mentioned, we won't lose the Global Hawk" Qin Tairan forced back the joy in his heart and asked, "If we dispatch a few more, is it possible for us to find it at a very close range and then shoot it down?" ”

If it is really like what Qin Tairan imagined, then the Global Eagle will no longer be able to haunt unscrupulously near our airspace.

"Not so ideal, according to the accuracy of the signal receiver you provide for the measurement of signal strength, the deduced position is still in a three-dimensional space of tens of kilometers, and the probability of hitting it directly is very small, and you have to have the luck of winning the lottery." Duke smiled bitterly and shattered Qin Tairan's illusions.

"Now you still see if you can find all the hardware materials I need, and I'll find someone to make a few prototypes and try them out."