Chapter 244 Preparing to copy the electronic warfare pod
As one of the key cities in the economically developed Yangtze River Basin, Jinling actually has many flights to the capital every day. Logically speaking, Chang Haonan only needs to go to Shengjing for the first time like Just ask the college to buy him a plane ticket whenever he wants.
But after experiencing a series of previous events, Chang Haonan is naturally no longer that unknown little person.
For example, the most obvious point is that in order to ensure safety, all his air travel will be handled free of charge by United Airlines, which has an Air Force background.
Chang Haonan himself was happy to save the trouble and boarded a Boeing 737 aircraft operated under the name of flight CUA353 in the afternoon.
This flight is real. It flies from Beijing to Chancheng via Jinling, but it is not open every day. The three airports it passes through, Nanyuan, Daxiaochang and Shadi, are all military-civilian airports under the jurisdiction of the military, which is very suitable for Chang Hao. Nan traveled without making too much noise.
Xu Yang, who was going to Jinling with him, also took the opportunity to experience the first-class cabin operated by United Airlines.
However, the price of her air ticket still has to be paid by School 14, and it just costs the economy class price.
Of course, despite the name, in the late 1990s, the first class cabins of most short-haul aircraft had essentially become business class with upgraded hardware equipment.
“The Electronic Technology Group is so rich, can they buy first-class flights for both of us?”
Xu Yang put his carry-on luggage away, and then felt the seats that were more spacious and softer than those in the economy class.
She didn't know the inside story. She was only told about the upgrade when she came to the airport to exchange her ticket, so she naturally thought it was an arrangement made by Jinling.
“It’s okay. Although Dianke Group’s benefits are indeed good, I don’t have to spend money to fly. Besides, even if we don’t upgrade, they can’t sell many tickets here.”
Chang Haonan said, flattening the seat to nearly 180° and preparing to take a rest.
In this era, there are only a few people who can afford to fly, and even fewer passengers will spend money on higher-end cabins.
As a result, those who ended up flying first class were mostly people like Chang Haonan who didn't spend any money, or at least people like Xu Yang who were upgraded without spending money.
“Is it okay if you don’t have to spend money?”
After two days, Xu Yang had become accustomed to the various surprises brought by Chang Haonan, so he didn’t show any surprise. At first glance, she only said half-jokingly:
"If I had known that there would be such a good thing, I would have joined your Aviation Industry Group after I returned to China."
Obviously she thought this was something within the aviation industry system. benefits.
Chang Haonan did not clear up the other party's misunderstanding, and replied in the same joking tone:
"It's not too late if you want to join..."
...
When the plane landed, the 14th Institute of Electrical Engineering naturally arranged a dedicated person to pick it up.
It’s just different from the common 212+Coaster configuration here in the north. Jinling uses the 212+Iveco Deyi which is full of local characteristics.
Before Chang Haonan's rebirth, this kind of light passenger car had few users except for centralized procurement and use as a special vehicle chassis. However, from the 1990s to 2010, Iveco was a popular model all over the country.
As expected, the person leading the team was Guo Lin, who had met Chang Haonan and the other two.
"Guo Gong moved very quickly. I thought I would have to wait for a few days."
The three of them shook hands and then got in the car.
Xu Yang sat in the same double row seat as Chang Haonan very naturally.
"As soon as the people inside the institute heard that we were going to invite you two, they approved the note without saying a word, for fear of delaying something."
Guo Lin motioned to the driver in front of him to drive:
"Should we take a break first or what should we say?"
Chang Haonan turned his head and looked at Xu Yang beside him, who just shrugged to show that he didn't care.
“After you put your luggage away, let’s take a look at the pod first. Researcher Xu and I wanted to see what this high-end American gadget looks like along the way.”
"No problem."
The 14th Electrical Engineering Department is only about 20 kilometers away from Daqiaochang Airport. In the 1990s, there were basically no traffic jams, and it only took about half an hour to reach the destination. After getting off the car, the two entered a building under the leadership of Guo Lin, and then turned around several times before finally seeing the captured pod and 14 more in a place that should be the basement. of other staff.
The workplace is not a place for small talk, so after just some simple greetings, Chang Haonan and Xu Yang put on anti-static lab coats and had close contact with them for the first time. The subject of this study.
“In the past few days, we have basically completed the splicing work of these fragments. Although the function is definitely impossible to restore, at least the overall appearance should not be much different from before it was broken. .”
Guo Lin followed behind the two and introduced.
The moment he saw the pod, Chang Haonan was basically sure that his previous guess was correct.
Disregarding the synthetic aperture radar antenna in the middle, this is an electronic jamming device based on digital radio frequency memory (DRFM) technology.
Xu Yang, who was next to him, also found the key point almost at the same time:
“There is no traveling wave tube or CNC phase shifter here. If you are sure that you didn’t miss it during the search, If so, then this thing should use a relatively new all-digital design.”
It is no different from Chang Haonan's judgment.
The latter did not do it rashly, but asked the staff next to him to remove several shell fairings that partially blocked the view, revealing the true appearance.
"But... the design of this pod is so bloated."
Xu Yang frowned slightly when he saw the whole interior, and seemed a little puzzled.
“When we were searching in the mountainous area, we also felt it was very strange, but we can be sure that at least no large pieces were missing. This thing should have been designed to look like this.”
Guo Lin explained from the side.
Chang Haonan, who was circling the pod wreckage, was also surprised.
Having experienced the Internet age, he has seen pictures of the interior of the AN/APS-154 synthetic aperture radar (SAR) pod and the AN/ALQ-99 electronic jamming pod, although the lower half is basically empty , but the equipment filling rate is still about 60%.
But not to mention that the thing in front of me is at least 10 meters long, only the front and rear ends and the middle section are equipped with equipment, and the rest are empty shells——
Maybe Considering power supply or weight limitations, the SAR antenna inside the pod is only about 4 meters long, which does not fully utilize the space.
Logically speaking, this kind of tactical equipment should be as compact as possible.
“Anyway, let’s use optical amplification equipment to take a look at the circuit design. I see that the memory has been smashed, so there should be no possibility of restoring the program code.”
Chang Haonan decided to put aside his doubts for the time being and start from a more reliable place.
When he first entered this laboratory, he was worried that any special equipment would be needed, but the circuit boards that were the core of the interference part were not large in size and only required an ordinary optical microscope.
High-end scientific research often requires only the simplest tools.
"Phase accumulator, waveform memory, low-pass filter, reference clock..."
Although Chang Haonan has never seen these component models from the 1990s, it is still not difficult to distinguish them by some appearance features and blurred surfaces. Check the clear inscriptions to determine what functions they are:
“Yes, this board is a direct digital frequency synthesizer.”
“Under the control of the reference clock, the phase accumulator The frequency control word K is linearly accumulated, and the obtained phase code (n) addresses the waveform memory (ROM) to output the corresponding amplitude code. After DAC and low-pass filtering, the corresponding analog signal can be output. "
Chang Haonan looked up from the binocular microscope and found Guo Lin next to him and his colleagues looking at him with incredible eyes.
"What's wrong?"
"This... just... you can see it directly?"
Guo Lin looked at Chang Haonan, who looked as if he was just eating and drinking, and then looked again The huge pod that had just been put together next to it.
He suddenly felt that his previous work seemed a bit in vain...
(End of this chapter)