Chapter 1121: Being on guard against others is indispensable
“Additional preparations?”
Liang Shaoxiu frowned slightly:
“But based on the experience of colleagues in brother units "Customers in the Middle East generally...don't care much about money."
Chang Haonan also thought that what the other party meant was that big business owners don't care about cost-effectiveness when buying equipment.
This can be regarded as a stereotype of domestic and foreign trade exports for a long time.
"How is it possible..."
He waved his hand as he spoke:
"The oil man is just rich, not stupid... Let's see other people buying things without caring about the cost. , because they are essentially spending money to buy more important things."
Liang Shaoxiu was slightly stunned, and then realized that the two of them were not on the same channel.
So he quickly explained:
"No, what I mean is that the people they are responsible for purchasing generally don't care much about money...at least they don't care about the money we can afford."
< br>At this time, Chang Haonan also reacted and helplessly held his forehead:
"The preparation I am talking about is not to bribe the key personnel on the opposite side... but to guard against other competitors bidding. Mischief was made in the process.”
An international arms purchase project like this must be carried out in several rounds.
Considering that none of the three companies that were actually selected currently have finished products, it will definitely be a contest of paper performance and the political power behind each at the beginning.
But for such a large list, actual testing is inevitable in the end.
And in this process, there are too many tricks that can be played.
For example, when Persia went to the United States to purchase fighter jets, Grumman asked its F14A to turn on the engine first to consume part of the fuel.
The actual thrust-to-weight ratio of the aircraft is not that ugly.
Of course Liang Shaoxiu has heard this story, but in the final analysis he is still an honest man and lacks a deep understanding of the dangers of the international arms sales industry:
“But the early warning aircraft does not look at maneuverability or bomb load... How to make it worse?"
"You can't secretly release interference during the test, right?"
Chang Haonan couldn't help but curled his lips:
"It's hard to say..."
"Back then, the Greeks held a tender for new tanks. As a result, when the Challenger and Abrams were undergoing field tests, the French secretly sent agents to the test site to place jammers, causing the two models to not even follow the correct test routes. ..."
Liang Shaoxiu's facial muscles twitched slightly, obviously wanting to laugh but holding back:
"So...the French Leclerc tank won in the end?"
"That's not true..."
Chang Haonan shook his head:
"Because the performance of these three products was very poor, the German Leopard 2A4 was cheaper."
"..."
Liang Shaoxiu finally didn't hold back.
Chang Haonan also couldn't help laughing...
After a while, the two of them stopped smiling and returned to the topic:
"Anyway, although it is difficult to use these small means in the test of aerial equipment, we must be on guard against others... On the one hand, we don't have much dealings with the Swedes, but the Kingdom of David... we can't count on them There are too many bottom lines, you know this too.”
“On the other hand, you don’t need to bribe any decision-makers to cause damage in the test. You just need to open up some underlying joints. In this regard, David Guo. Having dealt with them for decades, they are much better than us."
Liang Shaoxiu lowered his head and thought for a moment, then analyzed:
"As far as the aircraft itself is concerned, as long as you participate in the selection on the spot. If there is no problem with the French personnel, there will be no hidden dangers. Besides, no matter how bold the Davidians are, they are unlikely to do anything to the French aircraft, so the risk should be concentrated on the airborne radar... ”
Speaking of this, he hesitated a little——
Although he has continuously participated in or presided over the research and development of the three types of early warning aircraft, he is not an expert in the radar field after all.
It would be safer to find comrades from the Electronic Technology Group:
"Now that Mr. Guo is still in the capital, Comrade Fan Jimin is temporarily in charge of the equipment testing of the early warning aircraft. I need to take care of it. Did he call me over too? "
Hao Jing, that's the good thing.
The local area has a well-established military industry, especially the military aviation industry.
Problems that would have to be solved by flying elsewhere can be solved here by riding a bicycle.
"Okay."
Chang Haonan looked at the time:
"Just in time, I will also tell you about the early warning aircraft and some key points of the entire bidding. Just...”
The order from the big dog owner was too sudden.
And at this juncture, it was impossible for him to abandon the half-finished project.
The responsibility can only be entrusted to more reliable comrades.
......
After receiving the call from Liang Shaoxiu, Fan Jimin took less than an hour to stand next to the former. "Academician Chang, I have admired you for a long time..."
As a rising star promoted by Guo Lin, today was the first time for him to see Chang Haonan in person.
Due to excitement, there was obviously a bit of vibrato in his tone.
Chang Haonan did not answer the question, and just handed the panting opponent a bottle of water:
"The conditions here are average. We haven't prepared tea, so let's use mineral water..."< br>
Within a few words, Fan Jimin calmed down again.
Immediately afterwards, Chang Haonan repeated his worries to him, and then analyzed:
"'Gaoming' is a wide-bandwidth-angle radar with pulse compression processing capabilities. Overall, it is indeed less It is easy to be interfered. Of course, everything has two sides. If the other party prepares for targeting in advance, it is not without its weaknesses."
"From the perspective of the jammer, the most effective way is probably to use broadband radar. The working wavelength is much smaller than the target size. Interpulse coherence accumulation technology is used for intermittent sampling and forwarding interference..."
"..."
The range resolution unit of the wideband radar is much smaller than the target size. Therefore, a complex target illuminated by a signal can be regarded as a collection of scattering centers. The echo signal is no longer a simple copy and delay of the transmitted signal, but a composite signal containing multiple scattering centers with local subtle features.
In other words, the resolution is higher.
This characteristic makes it difficult to effectively accumulate the echo signal energy of the broadband radar within a repeated cycle, and it is almost impossible to interfere with the method used by Chang Haonan on the Konggan 100 pod.
But as a price, once the coherent interference obtains sufficient processing gain and even performs characteristic fine modulation of the interference signal, the damage caused to the echo signal of the broadband radar system will be more serious.
It can be understood as "Precision things are not prone to problems, but once problems occur, it is difficult to solve them."
And Fan Jimin responded quickly:
"Then the best response strategy should be to develop more effective low-interception technology so that the other party cannot perceive the radar search signal at all?"
It should be said that people who can be favored by Guo Lin have great abilities. It must be no problem.
But the experience is still inferior.
“Low interception technology does cure both the symptoms and the root cause, but it requires major changes to the radar from beginning to end.”
Chang Haonan replied:
"According to what Comrade Shaoxiu learned, Party A's initial plan comparison phase should begin soon. The entire bidding is expected to be completed within 18 months. We hope to receive the first aircraft in 2005... I'm afraid we are not that Much time."
"Then..."
Fan Jimin looked confused.
Electronic warfare actually has very strong turn-based characteristics.
Everyone learns the same set of things. Basically, you make a move and I take the move. The upgrade path is very clear and there are not too many tricks.
And generally speaking, the difficulty of interference is much lower than that of anti-interference.
Especially in the context of this kind of bidding.
Because the other party does not need to completely disable your equipment, it only needs to slightly affect the work efficiency.
Even if a radar is one generation ahead, if it is deliberately targeted, the delay will inevitably increase or the resolution will deteriorate.
In actual combat, this will not have any impact.
But when compared with Party A’s eldest father, the gap is very obvious.
After a brief silence, Chang Haonan was the first to break the deadlock:
“In fact, the inter-vein coherence accumulation technology itself is not very mature, and the Kingdom of David will not really open. When an electronic jammer goes to cause trouble, it is more likely to target a specific radar waveform..."
"So we can pre-program commonly used waveforms such as truncated M sequence signals, OFDM signals, and LFM signals. Set it up, and switch directly once you find a problem..."
"..."
Fan Jimin's eyes widened slightly.
The so-called low interception technology is generally also called flexible beam control.
It can be understood that the beam characteristics and parameters are adjusted through algorithms to avoid being analyzed by the other party.
Chang Haonan's idea is equivalent to the local method of launching a horse.
More flexible, but not completely flexible.
But it’s just as he said just now.
It is enough to deal with the small tricks that the opponent may use.
"Then after I go back, I will ask the institute to adjust the radar control system..."
Chang Haonan nodded, and then gave a special instruction:
"Don't disclose this matter to the French side for the time being. At least we have to wait until the first phase of bidding is over..."
(End of this chapter)