X-band Large Phased Array Radar
46°31'39" N 130°45'23"E
Huanan, Jiamusi, Heilongjiang, China
In addition to the P-band radar equipment, China has also previously established a number of large array of phased array radar to meet the needs of China's strategic missiles early warning. A non-rotatable 30x24-meter large X-band radar station was established in Heilongjiang Province, China. The main task of the X-band radar is to intercept, track and identify targets using the information of the P-band long-range early warning phased array radar to provide accurate warning target information for the Hongqi-19 and Kinetic-3 missile interception systems.
The X-band corresponds to a wavelength of 3 cm. and has a frequency range between 8–12 gigahertz. In a missile defense system, multiple types of radars work together, with multiple radars tracking, and discriminating between deadly objects and less-deadly decoys. A radar operating in the P-band [UHF band with Chinese characterisitcs], can sweep a broad space at a range of several thousand kilometers, acquiring and tracking incoming threat objects. The narrowly focused X band radar can focus on a specific object, and could be used to determine which objects are is a threat and which are decoys. The higher-frequency X-band radar is more accurate than UHF, and can concentrate energy on a target to make successful detection and tracking more likely.
If the distance to a target is to be determined by measuring the time required for one pulse to travel to the target and return as a reflected echo, it is necessary that this cycle be completed before the pulse immediately following is transmitted. This is the reason why the transmitted pulses must be separated by relatively long nontransmitting time periods. Otherwise, transmission would occur during reception of the reflected echo of the preceding pulse.
The amount of attenuation caused by these weather factors is dependent upon the amount of water, liquid or frozen, present in a unit volume of air and upon the temperature. Therefore, as one would expect, the affects can differ widely. The further the radar wave and returning echo must travel through this medium then the greater will be the attenuation and subsequent decrease in detection range. In the case of rain the particles which affect the scattering and attenuation take the form of water droplets. It is possible to relate the amount of attenuation to the rate of precipitation. If the size of the droplet is an appreciable proportion of the 3cm wavelength, strong clutter echoes will be produced and there will be serious loss of energy due to scattering and attenuation. A very heavy rainstorm, like those sometimes encountered in the tropics, can obliterate most of the (X-band) radar picture.
The higher the frequency of a radar (radio) wave, the greater is the attenuation (loss in power), regardless of weather. Lower radar frequencies (longer wavelengths) have, therefore, been generally superior for longer detection ranges. The peak power of a radar is its useful power. Range capabilities of the radar increase with peak power. Doubling the peak power increases the range capabilities by about 25 percent.
In the United States, the Sea-Based X-Band (SBX) Radar acquires, tracks and discriminates the flight characteristics of ballistic missiles. The sea-based X-band (SBX) platform that it sits on stands more than 250 feet high and displaces more than 50,000 tons. It consists of a semi-submersible oil production platform topped with the XBR. XBR is the primary payload on the semi-submersible platform supporting the Ground-Based Midcourse Defense phase of the Missile Defense Agency Ballistic Missile Defense System.
The US Navy's Air and Missile Defense Radar (AMDR) suite is being developed to fulfill Integrated Air and Missile Defense requirements for multiple ship classes. This suite consists of an S-Band radar (AMDR-S), an X-band radar and a Radar Suite Controller (RSC). The US Army's AN/TPY-2 radars are high resolution, phased array, X-band radars designed and built specifically for the missile defense mission. The radar can be deployed in one of two modes: terminal or forward-based. The United States had 10 TPY-2 radars as of 2016 with plans to produce two more.
According to a statement by the CETC group, a new radar, "important and the first of its kind in China," was admitted to active duty on September 27, 2016. The exact type of radar was not disclosed by the text, but it specifies that it is a "historical" moment and an "important step in the construction of the overall system of the field". The text adds that several years were necessary between the design, construction, testing, calibration and the first experimental exploitation of the site. The importance of this inauguration can also be illustrated by the fact that the Director of the ECCC Institute No. 14 - one of the two most important radar research offices in the country - attended the ceremony with all development team. According to some sources familiar with the case, several top Chinese Air Force (PLAAF) officials and an early warning missile unit were also involved.
According to one of the academic papers written by researchers at CETC Institute No. 14, this radar is 30 meters in diameter and its operation requires that the flatness of the face of the radar be less than 3.8mm. As a result, the radar is cut into 60 rectangular dies of a dimension of 2 meters x 7.5 meters, ie a total area of 900m².
Gu Yeqing is one of the youngest senior teachers in the institute. He always cherished the" rooted in scientific research, devotion to national defense, " the desire, dedication, bent on science and technology, dedication, work more than 10 years, step by step, for the 14 radar made a positive contribution. Has won the ministerial " Science and Technology Award " first prize, won the honor of 14 young model pacesetter, and won the Jiangsu Provincial May Fourth youth medal.
Gu Ye Qing assumed the phased array radar antenna design and development work. Faced with a very high degree of integration, short design cycle and many other difficulties, he with a strong sense of professionalism and responsibility, devoted himself to the work. Through the side optimization, side validation, the front structure of continuous innovation, good governance, to ensure that the antenna array system developed successfully, and won the ministerial "Science and Technology Award" first prize.
Huanan County is a county-level division under the jurisdiction of Jiamusi Municipality on behalf of Heilongjiang Province. County is at the third level in China's administrative divisional system.
Huanan County was founded in June 1946 and is named after the south of Huachuan County. Huanan County is a cold temperate continental monsoon climate with four distinct seasons in spring, summer, autumn and winter, and short winter and summer. The main agricultural products in Huanan County include soybean, corn, rice, white melon, perilla, and flue-cured tobacco. The Mujia Railway and the national highways such as Heda and Yirao pass through.
The Yi people ived in the Shandong Peninsula during the Xia and Shang dynasties. They belonged to the Dongyi people. When the Zhou Dynasty was destroyed, the Yi people were forced by Zhou, most of them migrated to the northeast, and settled down the Songnen Plain. During the Warring States Period, the Yi people were engaged in agriculture, fishing and hunting, and became the main food for the monks. After the establishment of the Yuan Dynasty , Huanan was under the jurisdiction of the Huerhawan Family Office of Kaiyuan, Liaoyang Province, and was later ruled by Kaiyuan. In April of the 30th year of Wanli (1608), Nurhachi and Mingbian demarcated the monument and since then claimed to be a country. The area of Huanan and other places entered the Jurchen country.
In June of the 37th year of the Republic of China (1948), Yidong County was abolished, and the three districts of Taiping County (now the Tulongshan Town of Huanan County), Wudaogang and Jinsha River were placed under the jurisdiction of Huanan County. In January 1985, the Hejiang area was officially revoked, and Huanan County was placed under the jurisdiction of Jiamusi.
In the year 2018 the Huanan County People's Government adhered to Xi Jinping's new era of socialism with Chinese characteristics as the guide, and thoroughly implemented the spirit of the 19th National Congress of the Communist Party of China, the important speech of General Secretary Xi Jinping and the spirit of important instructions, under the strong leadership of the municipal party committee, the municipal government and the county party committee. It consciously practiced the new development concept, firmly grasped the general tone of the work of striving for stability, and strived to stabilize growth, promote reform, adjust the structure, benefit the people's livelihood, and prevent risks.
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