Yesterday, the first ship domestic carrier in Dalian Shipyard news came as a small series of "senior" military fans who did not sleep well the night of excitement, after all, our home gardening addition of a defense weapon, the country is also lucky . For aircraft carriers into the water, but also foreign media coverage, foreign media have estimated that China's first aircraft type 001A estimated to cost 210-27000000000 yuan, more than the cost does not include carrier-based aircraft, ships and other ancillary expenses, as a large aircraft carrier combat platform, its interior has a wide variety of system components, system to system and coordinate with each other to form a larger collection system, so much so that the aircraft carrier-based aircraft platform, as it is composed of a super system maritime mobile fortress, the expensive cost is also reasonable.
For this aircraft carrier weighing country, it was not questioned by the will: there is the domestic carrier which our critical equipment and systems to achieve localization of it?
Do not worry, Xiao Bian Listen to you explain.
The radar system
From the early 1990s, with the aviation industry and the rapid development of information technology, the kind of performance and carrier-based aircraft is also increasing, various high-speed anti-ship missiles have emerged, the resolving power of carrier-based radar, anti-jamming rapid response capability and the ability to put forward higher requirements. Coupled with the development and use of aircraft radar technology in the actual needs of large phased array radar, air traffic control radars, radar landing aids, such as Phalanx close-in weapon fire control radar and so was loaded onto the aircraft.
Most striking than the large phased array radar.
Habitat domestic media reports, phased radar of our country's first aircraft carrier used in the active phased radar is installed on the 052D destroyer has "Chinese Aegis" title, this active phased array radar using electronic stability platform , by radar adaptive scheduling time and energy resources, the way to change the surface of the antenna array combining beams emitted from the beam scanning direction is changed, the search may be completed at the same time the alert, accurate tracking, target identification friend or foe, missile guidance, and other features to guide target. Active phased array radars use electronic scanning by changing the frequency or phase change mode, the change direction of the combined beam to be emitted. Electronic scanning high scan rate, the beam direction changes fast rate, measurement accuracy is higher than the target mechanical scanning radar. And in manufacturing we have achieved domestically.
Active Phased a large number of radar T / R module configuration, a so-called T / R module in the normal sense to refer to a portion between the video and radio antenna system, i.e. T / R module antenna one end, a termination video processing means constitute a radio system. T / R is the abbreviation of Transmitter and Receiver, transceiver generally comprises two branches, unit circuits include: a local oscillator, down converter, filters, low noise amplifiers, power amplifiers, a duplexer circuit. Several T / R module is composed of a small unit called subarrays, with each subarray will do a FPGA data preprocessing, this generally does not require a particularly high performance FPGA, the lower end of the commercial market in 2000 ten thousand or 32 million class-level FPGA on the line. However, in some cases it will require higher performance FPGA.
In the back-end data collection process on the need DSP. It must be noted that some of the radar performance requirements are not too high, may not be used for preliminary data processing FPGA, DSP array directly to the back-end summary data processing. Commander of the CPU plays a similar role, assume the task management functions.
For chip used in radar, domestic self-designed Godson CPU devaluation and Shen Wei, then someone will ask we usually use the phone's CPU is said that most foreign production, with domestic military CPU, kidding me? Of course, is not a joke, you do not say nothing of the letter, homemade chips not only done well, and the price is competitive. Take Godson, according to media reports, military weapons and equipment procurement bidding information network news release, the face of the product purchasers proposed indicators army, have counterparts are given $ 200 million offer, Godson represent only 20 million yuan. Godson aspect explains why: "The technology that we have done civilian mature, you can modify according to military requirements, much more natural than to start from scratch to save money."
Hua Rui 2 radar signal processing algorithm refined into FFT, FIR, correlation matrix calculating base member 17 kinds of inversion are achieved by a logical combination of computing complex algorithms member, the radar system can solve the large bandwidth, high throughput application requirements. This technique successfully applied to high-performance digital signal processors and application-oriented development of advanced radar. Hua Rui 2 is modified based on the Godson 3B, Godson 3B is a vector CPU.
Although not sure whether domestic carrier's first aircraft will be used both CPU, but the CPU performance and on the stability, reliability, and previous experience on similar equipment is concerned, we assume active phased array radar task management functions CPU, the Godson and Shen Wei is fully qualified in.
It is the progress of China's electronics industry, making China the ability to fully realize the localization of the aircraft carrier equipped with large phased array radar. In fact, in a section on recent advent of early warning aircraft, command and early warning systems have been the core elements to achieve 100% localization.
Military command systems, data links and communication systems
For military command systems, data links and communications systems, in fact, back in the late 1990s or early this century to solve the localization problem. With the continuous development of domestic technological progress, these systems are also the basis of hardware and software as technology advances and constantly updated.
Let's first talk about the military command system, which is mainly composed of CPU, DSP and operating system supported by a number of other components constitute. And after using the self CPU, through system optimization, the actual performance that is not inferior to foreign CPU, such as Godson's chief scientist has introduced: a command system application, X86i7 platform 20 frames per second, per second before the Godson-3 platform optimization, optimized 30 frames per second. Although the domestic first aircraft carrier is not clear chain of command will use what CPU, but the CPU is completely independent qualified for the job, and after the performance of the system can be optimized better than X86i7.
As for battlefield data link communications systems and, in fact, higher-end civilian communications systems, wireless communication systems, or say that we use is actually battlefield data link play the rest. Mainly by the CPU, DSP, ADC (analog digital converter), the DAC (digital analog converter), a radio frequency, the antenna and other components. CPU, DSP, antenna needless describes. RF chip having RF transceiver and power amplification function, the ADC is a digital signal into an analog signal, in turn, the ADC, the analog signal into a digital signal. Since the data link and the communication system involves converting an analog signal and a digital signal, thus transmitting end and the receiving side need to have ADC / DAC. In addition, ultra-high speed ADC / DAC is an important device radar, electronic warfare, frequency agility must also rely on the ultra-high speed ADC / DAC.
On the data link communications systems and, in fact, the greater the difficulty of software than hardware, for the hardware, no more than the basic requirements of industrial products, but the software will have to lower some of the effort.
All in all, the chain of command on the first ship of aircraft carriers, communications systems and radar systems, China is fully capable of, we have realized the localization.
This article Original Address: https: //www.eeboard.com/news/nvidia-381-89/
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