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Type 346 Radar
Type 346 radar is a highly digitized, multi-function, dual-band (S and C bands) naval active electronically scanned array (AESA) installed on Type 052C destroyers, Type 052D destroyers, Type 055 destroyers and Type 002 aircraft carriers of the PLAN. The radar is named as the Star of the Sea (Hǎi-Zhī-Xīng, 海之星) by its developer and it is one of the two competitors for PLAN’s SAPARS (Shipborne Active Phased Array Radar System) project/program. Due to its secrecy and lack of information, Type 346 radar has been frequently but erroneously confused with a Chinese fire control radar Type 348, and mistakenly identified as Type 348 by many sources. Furthermore, it is also frequently confused with and misidentified as Sea Lion series C-band phased array radars developed by another design house. Several models in the Type 346 series have been developed. When Star of the Sea was selected as the winner of SAPARS and accepted into Chinese service, it received the Chinese naval design ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bridge Of CNS Changchun (DDG-150)
A bridge is a structure built to span a physical obstacle (such as a body of water, valley, road, or rail) without blocking the way underneath. It is constructed for the purpose of providing passage over the obstacle, which is usually something that is otherwise difficult or impossible to cross. There are many different designs of bridges, each serving a particular purpose and applicable to different situations. Designs of bridges vary depending on factors such as the function of the bridge, the nature of the terrain where the bridge is constructed and anchored, and the material used to make it, and the funds available to build it. The earliest bridges were likely made with fallen trees and stepping stones. The Neolithic people built boardwalk bridges across marshland. The Arkadiko Bridge (dating from the 13th century BC, in the Peloponnese) is one of the oldest arch bridges still in existence and use. Etymology The ''Oxford English Dictionary'' traces the origin of the w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sanya
Sanya (; also spelled Samah) is the southernmost city on Hainan Island, and one of the four prefecture-level cities of Hainan Province in South China. According to the 2020 census, the total population of Sanya was 1,031,396 inhabitants, living in an area of . Nevertheless, its built-up (or metro) area encompassing Haitang and Jiyang Districts was home to 801,020 inhabitants as of 2020. The city is renowned for its tropical climate and has emerged as a popular tourist destination, also serving as the training site of the Chinese national beach volleyball team. Sanya is home to small concentrations of Utsul people. Sanya is also the location of Yulin Naval Base, a major military facility on the South China Sea which is home to the People's Liberation Army Navy ballistic nuclear missile fleet. History Known in ancient times as Yazhou, postal romanization: Aichow (), literally "cliff state or prefecture", Sanya's history dates to the Qin Dynasty (221–206 BCE). Due to its r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nanjing University Of Science And Technology
The Nanjing University of Science and Technology (), colloquially NJUST (), is one of the National Key Universities under the Ministry of Industry and Information Technology of China. It is a science-oriented university located in Xuanwu District in the east suburban area of Nanjing. The university is included in the Chinese state Double First Class University Plan. History The Nanjing University of Science and Technology can be traced back to 1953, as Department of Artillery Engineering of Institute of Military Engineering of the PLA (People's Liberation Army) in Harbin. Since its establishment, it aims on serving national strategies and promoting social progress. In 1962, the campus moved to Nanjing. The name of the university changed many times, and finally determined as current name in 1993. In September 1998, the name on the school badge was inscribed by Chinese President and General Secretary of the Communist Party Jiang Zemin. Since June 2008, the Nanjing University of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nanjing University Of Aeronautics And Astronautics
The Nanjing University of Aeronautics and Astronautics (NUAA, ), colloquially known as Nanhang (南航), is a public research university in Nanjing, China. One of the Seven Sons of National Defence, it is directly supervised by the Ministry of Industry and Information Technology. The university is part of the Project 211 and a Chinese state Double First Class University Plan university identified by the Ministry of Education of China. NUAA is a selective university that usually admits top 2% students in the National College Entrance Examination of China. It is ranked among the top 250 universities globally for Mechanical, Aeronautical and Manufacturing Engineering in the QS World University Rankings. It is also among the top 300 institutions of Asia, according to QS World University Rankings and Times Higher Education World University Rankings. According to some rankings in 2021, NUAA ranked within the 301-400 band globally. History Founded in October, 1952, as the Nanjing Coll ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chen Geng
Chen Geng (; 27 February 1903 - 16 March 1961) was a Chinese military officer who served as a senior general in the People's Liberation Army. Enlisting in a warlord's army at the age of 13, Chen Geng joined the Chinese Communist Party in 1922 and was accepted into Whampoa Military Academy in 1924. He approached Chiang Kai-shek and even saved his life by preventing him from committing suicide. He served as a Communist spy in the National Revolutionary Army for 6 years. After being discovered, he joined the Communist base in Jiangxi and participated in the Long March. He fought the Imperial Japanese Army during the Second Sino-Japanese War and then the Nationalists during the Chinese Civil War. Once victory was obtained, he went to Vietnam to help Hồ Chí Minh against the French during the First Indochina War and then participated in the Korean War with the People's Volunteer Army. He became a senior general in 1955. He then founded an academy of military technologies but died b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Semi-active Radar Homing
Semi-active radar homing (SARH) is a common type of missile guidance system, perhaps the most common type for longer-range Air-to-air missile, air-to-air and surface-to-air missile systems. The name refers to the fact that the missile itself is only a passive radar, passive detector of a radar signal—Radar illumination, provided by an external ("offboard") source—as it reflects off the target (in contrast to active radar homing, which uses an active radar transceiver). Semi-active missile systems use bistatic radar, bistatic continuous-wave radar. The NATO Multiservice tactical brevity code, brevity code for a semi-active radar homing missile launch is Fox (code word), Fox One. Concept The basic concept of SARH is that since almost all detection and tracking systems consist of a radar system, duplicating this hardware on the missile itself is redundant. The weight of a transmitter reduces the range of any flying object, so passive systems have greater reach. In addition, t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Active Radar Homing
Active radar homing (ARH) is a missile guidance method in which a missile contains a radar transceiver (in contrast to semi-active radar homing, which uses only a receiver) and the electronics necessary for it to find and track its target autonomously. The NATO brevity code for an air-to-air active radar homing missile launch is fox three. Advantages There are two major advantages to active radar homing: * As the missile is tracking the target it is going to be much closer to the target than the launching platform during the terminal phase, thus the missile's tracking can be much more accurate and better resistant to electronic countermeasures. Active radar homing missiles have some of the best kill probabilities, along with missiles employing track-via-missile guidance. * Because the missile is totally autonomous during the terminal phase, the launch platform does not need to have its radar enabled at all during this phase, and in the case of a mobile launching platform ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Track-via-missile
Track-via-missile or TVM refers to a missile guidance technique which combines features of semi-active radar homing (SARH) and radio command guidance. This avoids the problems with terminal accuracy normally seen by command guided missiles, especially at long range. It has been used on a number of long-range surface-to-air missiles (SAMs) including the MIM-104 Patriot. Explanation Command guidance has the advantage of isolating most of the equipment for the missile guidance at the launcher, where size and weight are significantly less important. In these systems, the radar that provides guidance is on the ground or ship and the missile lacks an independent guidance system. Typically two radars are used, one tracking the target and another the missile, so that they can fly independent and widely separated paths. A computer then calculates the position and velocity of the two and calculates an intercept point. The same computer then calculates the control inputs needed to fly the mi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Surface-to-air Missile
A surface-to-air missile (SAM), also known as a ground-to-air missile (GTAM) or surface-to-air guided weapon (SAGW), is a missile designed to be launched from the ground to destroy aircraft or other missiles. It is one type of anti-aircraft system; in modern armed forces, missiles have replaced most other forms of dedicated anti-aircraft weapons, with anti-aircraft guns pushed into specialized roles. The first attempt at SAM development took place during World War II, but no operational systems were introduced. Further development in the 1940s and 1950s led to operational systems being introduced by most major forces during the second half of the 1950s. Smaller systems, suitable for close-range work, evolved through the 1960s and 1970s, to modern systems that are man-portable. Shipborne systems followed the evolution of land-based models, starting with long-range weapons and steadily evolving toward smaller designs to provide a layered defence. This evolution of design increasin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HQ-9
The HQ-9 () is a long-range semi-active radar homing (SARH) surface-to-air missile (SAM) developed by the People's Republic of China. The naval variant is the HHQ-9 (). Description The HQ-9 is a derivative of the Russian S-300. Justin Bronk describes the missile as a "hybrid design based on a Russian SA-20 but with radar, seeker head and C2 elements heavily influenced by American and Israeli technology." Early HQ-9s may use track-via-missile guidance developed from a United States MIM-104 Patriot missile purchased from Israel or Germany. According to a 2001 article from ''Defence International'', the HQ-9 is 6.8 m. long with a mass of nearly two tons. The diameters of the first and second stages are 700 mm and 560 mm, respectively. The warhead mass is 180 kg, and the maximum speed is Mach 4.2. The HQ-9 may use fire-control radars from other Chinese SAM systems. Variants ; Air defense * * — Naval surface-launched variant. * — Improved version, first ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
MIM-104 Patriot
The MIM-104 Patriot is a surface-to-air missile (SAM) system, the primary of its kind used by the United States Army and several allied states. It is manufactured by the U.S. defense contractor Raytheon and derives its name from the radar component of the weapon system. The AN/MPQ-53 at the heart of the system is known as the " Phased Array Tracking Radar to Intercept on Target", or PATRIOT. The Patriot system replaced the Nike Hercules system as the U.S. Army's primary High to Medium Air Defense (HIMAD) system and replaced the MIM-23 Hawk system as the U.S. Army's medium tactical air defense system. In addition to these roles, Patriot has been given the function of the U.S. Army's anti-ballistic missile (ABM) system, which is now Patriot's primary mission. The system is expected to stay fielded until at least 2040. Patriot uses an advanced aerial interceptor missile and high-performance radar systems. Patriot was developed at Redstone Arsenal in Huntsville, Alabama, which ha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fragrant Hills
Fragrant Hills or Xiangshan Park is a public park and former imperial garden at the foot of the Western Hills in the Haidian District, Beijing, China. It was also formerly known as Jingyi Garden or "Jingyiyuan" (靜宜園). It covers and consists of a natural pine-cypress forest, hills with maple trees, smoke trees and persimmon trees, as well as landscaped areas with traditional architecture and cultural relics. The name derives from the park's highest peak, Xianglu Feng (Incense Burner Peak), a hill with two large stones resembling incense burners at the top. Name The syllable ''xiang'' in the Fragrant Hills' Chinese name ''Xiangshan'' refers to incense, not fragrance ''per se''. This name is perhaps derived from the name of the highest peak ''Xianglu Feng'' (香炉峰), literally: "Incense-burner Peak". The bronze-cast incense burner (with remote roots in ritual bronzes) being a common article found in temples. Indeed, incense was also often used as a metonym for tem ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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