Chapter 1365 The Ghost of the Phase


    "I…"


    Wang Hong, who had not recovered from the shock, left speechless for a moment.


    Chang Haonan thought there was something difficult:


    "There should be no other problem, right?"


    Wang Hong asked him to shake his head repeatedly:


    "There is definitely no problem here at the shooting range. I mean... are you going to go so directly?"


    This question made Chang Haonan a little confused:


    "Otherwise... the superiors specially assigned us a helicopter team. Although the weather conditions are not very good now, the weather forecast will be a sunny day tomorrow morning."


    Fortunately, Wang Hongrang also restored his thinking ability and reorganized his language:


    "Don''t you need to go back to the capital to analyze it in detail? Just take a look at the report..."


    He originally wanted to ask, just take a look at it?


    But I also feel a little disrespectful to the other person.


    However, Chang Haonan still understood the other party''s meaning and explained:


    "Under normal circumstances, we must check the debug logs specifically, and even set up a passive reception device nearby to analyze the characteristics of the space-based signal within a specific time range... But this time, it was a coincidence that the other party just hit the part I was studying. .”


    As he said that, he pointed out the direction of the target area No. 3:


    "The electromagnetic prism system we are laying has some operating details that match the descriptions in the report, but there are still some details, so I have to give priority to going to the site..."


    “…”


    Because this decision was really hasty, it was not until the helicopter Chang Haonan was riding took off that Maodao radar station received relevant news through its superiors, saying that a helicopter would land in about 90 minutes and asked them to prepare for reception.


    "A leader wants to come?"


    Liao Yongcai asked Guo Lin, who was obviously more familiar with the situation, and said:


    "The helicopter apron at our radar station has been used twice since its completion. One was the head of the Jincheng Military Region who came to inspect it, and the other was a soldier who fell from the car while repairing the radar and was injured..."


    Guo Lin had just taken off his work clothes and was putting on a cotton coat:


    "The leader is also an expert... In short, it must be the problem solved."


    In fact, he had served as the director of the 14th Institute of Electrical Science and Technology two years ago. If nothing unexpected happens, he will be able to hold a leadership position at the group level in two years. His administrative level on the surface is very close to Chang Haonan.


    However, the other party not only has the title of academician, but also the value of the position cannot be simply compared.


    “Solve the problem…”


    Liao Yongcai''s movements were frozen in place:


    "What''s wrong with our analysis yesterday?"


    He finally waited for a highlight moment of his own. If he was slapped in the face only one day, it would be a big deal.


    "It''s hard to say, it''s possible that Academician Chang has already thought of a solution..."


    Guo Lin took a deep breath, and the expression on his face was a little complicated.


    Although he and Chang Haonan have always had business contacts, they have not met in several years.


    This time, the two of them happened to be responsible for the spear and shield respectively. They originally wanted to take this opportunity to compete with each other in a distance.


    Although the probability of achieving an incoming early warning for the first time is not high, according to Guo Lin’s previous idea, he should be able to pass a few moves.


    As a result, now, he needs the support of his opponent...


    It is equivalent to the end of the contest before it even started.


    Fortunately, Guo Lin did not know Chang Haonan on the first day, and it would not affect the serious business for personal victory or defeat. So he quickly accepted the reality and began to direct the staff of the control center to organize the information so that the other party can Work can be carried out as soon as possible after it is in place.


    …


    "In fact, there is nothing wrong with your analysis direction, but it just underestimates the degree of decisiveness of the enemy''s attack..."


    Two hours later, Chang Haonan sat in front of the radar console and answered the question that Liao Yongcai couldn''t help but ask:


    "It can be seen from polarization data analysis that during the third system-wide diagnosis, the side lobe inhibition rate of Array 3 decreased by about 12 decibels."


    His fingers swiped over the **** of the spectrum analyzer. The 1.14GHz band depression looked like a cut-cut wound. The central air conditioner of the Maodao radar station emitted a low buzz, but it could not suppress the Didi alarms that were running the simulator one after another. Voice: "Last night, I asked the Beijing Aerospace Measurement and Control Center to superimpose the orbital parameters of several military satellites onto the electromagnetic environment map, you can see."


    Following the direction of Chang Haonan''s finger, the crowd came to the front of the monitor:


    "UTC time is 0400 to 0430, there are three suspicious satellites overhead, among which the experimental satellite numbered STP-4D has a overlap rate of more than 76% with the fault period. Although this number is not high, if the satellite transmitting antenna is considered, it may have The gaze function is enough to interfere with you."


    Traditional satellite-borne equipment is fixed on a satellite platform, and the posture of the satellite body needs to be adjusted to change its direction.


    Satellites with gaze function have an additional gimbal-like device, which can ensure that the equipment points to the same position on the earth''s surface during the satellite movement, so as to reduce the working time of the on-site engine and extend the satellite''s life.


    “STP-4D…”


    Guo Lin searched in his memory and did not find much relevant information.


    "A standardized satellite platform developed under the Pentagon''s ''Space Test Program'' is used to verify some cutting-edge technologies."


    Chang Haonan explained:


    "Specifically, this STP4D is used to test the new generation of Hall electric propulsion equipment, but the rail change frequency after it is launched is not high, and it is obvious that there are other undisclosed functions."


    Just like the operation of China''s reconnaissance satellites as "resources" and "oceans", all major powers will launch some mysterious spacecraft, and they can only guess before collecting enough feature information.


    And this STP4D is obviously a part of the opponent''s advance layout.


    No mistakes, one song, one content, one in 6, one book, one bar, one reading!


    Now I guess I noticed some clues, so I activated this hidden stake.


    "On the surface, all operations are very conventional, like here, a technology that uses Doppler shifts to compensate for orbital motion errors is an ordinary technique."


    Chang Haonan explained while circled out slight fluctuations in the spectrum, and the amplified waveform showed zigzag characteristics:


    "But in fact, conventional DRFM signals will not have such efficient adaptive characteristics. The waveform replication speed in this set of characteristic signals is three orders of magnitude faster than usual requirements, so it is for us."


    Liao Yongcai was still digesting and absorbing the huge amount of information from the conversation just now, but Guo Lin had already figured out most of the joints.


    Except for the reason.


    "But...why?"


    He leaned over to the screen, as if he wanted to stuff his eyes inside:


    "Just to prevent our radar debugging process from being blocked for a few days...the longest is no more than half a month?"


    "Of course it''s impossible."


    Chang Haonan waved his hand and suddenly asked:


    "Have you ever considered why there was no problem with the test of array 1 and 2?"


    Of course, Guo Lin thought about this issue, but because the interference itself was not continuous, he only thought it was a coincidence at the time.


    But now looking back with the conclusion, it is probably not that simple.


    Chang Haonan gave the answer directly without waiting for Guo Lin to reply:


    "The No. 3 array is too close to the common mode choke, and the characteristics of the side-by-side configuration itself lead to an enhanced near-field coupling effect... In this way, if we eliminate interference in the conventional way and complete debugging, then nothing can be seen in normal work Abnormal, but as long as the other party strengthens the level of interference, a defect that can be used by the other party will appear."


    Guo Lin''s eyes widened slightly.


    I have thought about Americans playing with silly, but I have never thought about the other party playing with such silly.


    Fortunately, after being prepared, it is not difficult to solve the problem:


    "Our upgraded FPGA board last year supports real-time polarization agility and dynamic partial reconfiguration, and only needs to re-write the beam control algorithm, consider the ionosphere Faraday rotation effect, and add polarization compensation coefficient..."


    “…”


    After the initial finalization of the solution, Guo Lin led a group of technicians to work quickly.


    Chang Haonan suddenly turned his head and looked at Liao Yongcai, who seemed to have not fully reacted:


    "Director Liao, the interference encountered by the 7010 radar twenty-five years ago was probably not as you might have guessed, it was from a radar reconnaissance satellite..."


    (End of this chapter)