Updated: 2012-09-06

However, Duke has not yet bowed to the difficulties. After putting down the phone, he began to ponder a new solution. Since he had basically no hope of going deep into the front line to capture the signals of Global Hawk, Duke was thinking about whether he could find something else and find a way to discover the traces of drones like Global Hawk.

It is not Duke's strength to find a solution from the radar. He has spent a lot of effort on communications now. He has accumulated a lot of experience in researching long-range wireless transmission of Lime last time. During this period, he has studied drone transmission methods and has studied the principles of current mainstream transmission methods of drones more thoroughly.

In principle, radio transmission is electrode moment radiation, which will gradually decay as the propagation range expands. So is it possible to reversely determine the position of the radio transmission source through this characteristic?

The answer is yes. In theory, there is a possibility. However, due to the accuracy problem, this method of determining the position has a large error. It can only determine an approximate position with a larger range, which is generally of little value for military purposes. But now Duke does not want to find a certain position. He just wants to be able to continuously track the communication signals sent by the other party. Then, if the range of this positioning is larger, there is no big problem.

From the previous data, Duke can quickly locate what kind of signals is emitted by the Global Hawk. This algorithm can be done in a miniaturized computer. As long as a surveillance system is developed, there are several points about ten kilometers apart in the Global Hawk signals, Duke thinks it can locate a trackable range. It will not be a fantasy to dispatch a very fast fighter to track these signals.

After all, the coverage 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. Duke can track this effective communication range and ensure that it can receive or send signals to the Global Hawk continuously. This goal is much more difficult than finding the position of the aircraft.

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

Duke stored countless data in Kerry space. During this period, he studied drones and had a profound knowledge of the basics of several bands of electromagnetic waves in Global Hawk Communications. This formula for attenuating distance signals is very ready-made. After Duke issued instructions and a general plan, Kerry quickly established a calculation model based on these basic formulas. If the difference in electromagnetic wave intensity of more than 3 monitoring points and the coordinates of these monitoring points can be obtained, then the location of the source of occurrence can theoretically be calculated.

This principle is the same as satellite navigation. As long as satellite navigation receives the signal differences between more than three different satellites, the coordinates of the current position can be calculated by calculating, because the satellite positions are known, and what Duke needs to do now is to be the same as this, the positions of the monitoring points are known, and the position of the signal transmitter is reversely deduced through energy attenuation.

In this case, the receiver's accuracy in judging signal strength, the humidity of the propagating intermediate atmosphere, whether it is raining, etc., will determine the accuracy of the position calculation. And like satellite navigation, the more monitoring points that can accept signal strength, the more accurate the calculated position will be.

Based on the knowledge he has mastered, Kerry perfectly established a mathematical model. Now the rest of the work is to implement this mathematical model, including a high-sensitivity electromagnetic wave signal receiver, which accurately measure signal strength and distinguish which signals are sent by the Global Hawk and which are clutter in the sky.

Fortunately, through the previous decryption, Kerry has mastered the calculation method of fully defensive Global Hawk communication signals, which can achieve real-time and accurate resolution under the current general ten-core CPU computer computing capabilities. From the software perspective, Duke's alternative Global Hawk early warning system no longer has major technical obstacles, and there are no problems in communication.

Now Duke needs to know the accuracy of domestic electromagnetic wave signal receivers to measure signal strength. With this signal strength measurement accuracy, Duke can simulate and deduce the approximate calculation error.

This matter is easy to solve. I called Qin Tai and then Qin Tairan checked the relevant parts and quickly gave the best level at present. Of course, this is directly related to the area of ​​the receiver. According to the size envisioned by Duke, this monitoring system can position the Global Hawk within a range of 50-100 kilometers with more than 3 monitoring points.

This distance is not very meaningful for finding the specific location of the Global Hawk, but for Duke, this is enough. With this thing, Duke can build a monitoring system that "I don't know where you are, but I can know that you are indeed here. And it will bite your tail."

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

Qin Tairan was invited to Rongcheng and sat down face to face with Duke. Duke said his ideas. Of course, Duke would not disclose the situation of Kerry. He just described the main architecture of this system and showed Qin Tairan the feasibility of tracking the Global Hawk in real time. If a fixed surveillance point found traces of the Global Hawk, fighter jets equipped with the same monitoring system can fly to suspicious airspace for detection. With the flight speed of the fighter jets far exceeding the Global Hawk, it will not be too big to keep up with the Global Hawk within a range of 50-100 kilometers.

"Duke, then we will send more than 3 fighter jets to bring the system you mentioned, and we will not lose the Global Hawks." Qin Tairan asked withstood the joy in his heart, "If we send a few more aircraft, will we be able to discover it at a very close distance and then kill it?"

If it is really like Qin Tairan imagined, then the global hawks will no longer be able to appear unscrupulously near our airspace.

"It's not that ideal. Judging from the measurement accuracy of the signal strength of the signal receiver you provide, the derived position is still in a three-dimensional space of dozens of kilometers. If you want to hit it directly, you must have the luck of winning the lottery." Duke smiled wryly and broke Qin Tairan's fantasy.

"Now you can see if you can find all the hardware materials I need. I'll find someone to make a few prototypes here to try it out."
Chapter completed!