Open an aircraft carrier to fight against Japan

Su Heng exclaimed in surprise, "The signal has disappeared!"

Xu Feng hurriedly asked: "The signal disappeared? What do you mean?"

Su Heng said: "According to our flight route and the detected speed of the Japanese radar antenna, we should receive a Japanese radar pulse signal every 35 seconds, but now it has been 1 minute since we received the signal last time. The Japanese radar pulse signal has not been received, and according to the technical specifications related to electronic warfare, it can be determined that the target signal has disappeared under such conditions.”

Xu Feng asked: "Have we detected the deployment location of the Japanese radar? Or, to say: How much has the deployment range of the Japanese radar been reduced?"

Su Heng said: "It is an ellipse with an area of ​​about [-] square kilometers. The Japanese radar must be deployed in this ellipse."

Xu Feng smiled and said, "Three hundred square kilometers? That's not very big. It's not bad that we can detect the Japanese army's radar deployment range to this extent."

Su Heng smiled and said, "It's not bad in terms of numbers, but why did the Japanese army's radar signal disappear?"

Xu Feng said: "Do you still need to ask? The Japanese army must have turned off the radar."

Su Heng said: "I also know that the Japanese army can turn off the radar to avoid positioning, but there is one point, if the Japanese army turns off the radar, they will not know our location, that is to say: they don't know where we will fly, So they can't reach the goal of early warning at all, they might as well not have radar."

Xu Feng thought for a while and said, "What you said makes sense, so what should we do?"

Su Heng said: "Let's fly a little further ahead to see if the Japanese radar will show up again." Xu Feng agreed, and continued to fly forward with the fighter plane. Su Heng said pleasantly : "Haha! The radar signal of the Japanese army came out again."

Xu Feng also smiled and said, "Great, now we can use these signals to further determine the position of the Japanese radar."

Su Heng didn't speak, and said after a while: "The signal this time is different from the signal just now. The Japanese army seems to have replaced a radar."

Xu Feng thought for a while and asked: "This is not normal. Why did the Japanese army change the radar? Why didn't they continue to use the radar just now? Is this type of radar a fire control radar, and they want to use the fire control radar?" Aiming at us?"

Su Heng said: "No, the frequency of the fire control radar is higher than that of the reconnaissance and warning radar, and the pulse repetition frequency is also higher than that of the reconnaissance radar, but the frequency of this type of radar is similar to that of the previous type, and the pulse repetition frequency is also the same Close, it must be a reconnaissance and warning radar."

Xu Feng asked: "Then there is always a difference between the two radars?"

Su Heng said: "There is indeed a difference, that is: the power of the rear radar is obviously lower than that of the front!"

Xu Feng asked: "This is even more strange. The greater the power of the radar, the longer the detection distance. Why did the Japanese army use a low-power detection radar instead of a high-power detection radar?"

Su Heng shook his head lightly, and said: "I don't understand, how about this? Ask the other four planes to see if they have found the enemy's radar. If they have found the enemy's radar, let's go back and see Let’s see how the comrades in the Electronic Warfare Intelligence Center analyze it.”

Xu Feng then asked the pilots of the other three planes, and the pilots replied one after another: "Radar was found!" Xu Feng then ordered the plane to return to the base, and the four planes flew back to the base. The pilot and the electronic warfare specialist got off the plane, and Su Heng After asking everyone, it was discovered that besides his and Xu Feng's crews, two other crews had discovered the phenomenon that the Japanese army switched to radar.

Su Heng said at this time: "Everyone go back and rest first. I will go to the Electronic Warfare Intelligence Center now and analyze the situation they made. We will have a meeting when I come back."

Everyone agreed to go back to rest. Soon Su Heng came back with an analysis report, and then called everyone to the conference room. Su Heng first said: "Our radar reconnaissance operation this time has achieved good results. We found seven radar Three of the signals were sent by the high-power radar that appeared at the beginning, and four were sent by the low-power radar that appeared later."

A pilot asked: "Why are there only three high-power radars? Didn't we find four high-power radars? We talked about them just now."

Su Heng said: "According to the analysis and judgment of the comrades in the electronic warfare intelligence center, two of the four high-power radars that you found are the same, that is to say: our two fighters discovered the same radar."

Everyone said one after another: "So that's the case, what happened when the high-power radar was converted into a low-power radar?"

Su Heng said: "I exchanged opinions with comrades from the Electronic Warfare Intelligence Center. After our discussion, we agreed that the radar behind the Japanese army is a small mobile radar, so its transmission power is smaller than that of a large fixed radar. From our point of view, the Japanese army replaced high-power radars with low-power radars."

Xu Feng asked: "Why did the Japanese army change like this?"

Su Heng said: "According to the comrades in the intelligence center, foreign countries have conducted in-depth research on radio positioning and direction finding, and they already know that they can find the location of the emission source based on the received electromagnetic waves. They naturally understand that we have such capabilities. , They were afraid that their radar would be destroyed by us, so they thought of a tactic of using a high-power ground fixed radar for long-distance detection, and when the target was found to be approaching, they would deploy a small mobile radar to continue monitoring."

Everyone suddenly realized, and said: "So it is like this!"

Su Heng said at this time: "When Lin Shuai started to deploy the bombing plan, he didn't take into account that the Japanese army had small mobile radars. Should we tell Lin Shuai this news and ask him to adjust the bombing plan?"

Xu Feng said: "As soon as the meeting is over, I will discuss this matter with Lin Shuai."

Su Heng nodded and said: "Well, let me continue to talk about the deployment of the Japanese army's radar. We have roughly analyzed the deployment position of the Japanese army's large ground fixed radar." Su Heng turned on the projector while talking, operated the computer, and put a A topographic map near Yuanshan Mountain was projected on the screen, and then three green ellipses appeared on the screen with his hand. Su Heng pointed to those green ellipses and said: "The radars of the Japanese army are deployed on these ellipses." within the shape of the area."

"Each of these areas has an area of ​​[-] to [-] square kilometers, and they are all high mountains. The Japanese radar antennas must be on these mountains. If we want to blow up the Japanese radars, we must find these antennas!"