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INS Mormugao (D67)
INS ''Mormugao'' is the second ship of the stealth guided-missile destroyers of the Indian Navy. She was built at Mazagon Dock Limited (MDL), and was launched on 17 September 2016. The ship was commissioned on 18 December 2022. She is named after the port city of Mormugao in Goa. Construction The keel of ''Mormugao'' was laid down on 4 June 2015, and she was launched on 17 September 2016 at Mazagon Dock Limited of Mumbai. ''Mormugao'' completed its basin trials on 15 December 2021 and started its maiden sea trials on 19 December 2021 commemorating the Goa Liberation Day. The ship was commissioned on 18 December 2022. The commissioning commanding officer is Captain Kapil Bhatia, VSM. Service history On 14 May 2023, ''Mormugao'' successfully fired an advanced variant of Brahmos missile. In December 2023, ''Mormugao'' was deployed to the Arabian Sea along with and to protect commercial shipping after an attack on a tanker transporting oil from Saudi Arabia to Mangalore. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mormugao
Mormugao is a coastal town situated in the eponymous subdistrict of Southern Goa state, India. It has a deep natural harbour and remains Goa's chief port. Towards the end of the Indo-Portuguese era in 1917, thirty-one settlements were carved out of the Salcette territory, to form Mormugao with Mormugao seaport as its headquarters. The remaining thirty-five settlements were retained in Salcette which encompass the present-day Salcete ''taluka'' with Margao as its headquarters. Geography Mormugao is located at . It has an average elevation of 2 metres (7 feet). Demographics and Healthcare India census, Mormugao had a population of 97,085. Males constitute 53% of the population and females 47%. Mormugao has an average literacy rate of 75%, higher than the national average of 59.5%: male literacy is 80%, and female literacy is 70%. In Mormugão, 11% of the population is under 6 years of age. Konkani being the state language, Marathi, Kannada, Hindi and English ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Active Electronically Scanned Array
An active electronically scanned array (AESA) is a type of phased array antenna, which is a computer-controlled antenna array in which the beam of radio waves can be electronically steered to point in different directions without moving the antenna. In the AESA, each antenna element is connected to a small solid-state transmit/receive module (TRM) under the control of a computer, which performs the functions of a transmitter and/or receiver for the antenna. This contrasts with a passive electronically scanned array (PESA), in which all the antenna elements are connected to a single transmitter and/or receiver through phase shifters under the control of the computer. AESA's main use is in radar, and these are known as active phased-array radar (APAR). The AESA is a more advanced, sophisticated, second-generation of the original PESA phased-array technology. PESAs can only emit a single beam of radio waves at a single frequency at a time. The PESA must utilize a Butler matri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Defence Research And Development Organisation
The Defence Research and Development Organisation (DRDO) is an agency under the Department of Defence Research and Development in the Ministry of Defence of the Government of India, charged with the military's research and development, headquartered in New Delhi, India. It was formed in 1958 by the merger of the Technical Development Establishment and the Directorate of Technical Development and Production of the Indian Ordnance Factories with the Defence Science Organisation under the administration of Jawaharlal Nehru. Subsequently, Defence Research & Development Service (DRDS) was constituted in 1979 as a service of Group 'A' Officers / Scientists directly under the administrative control of the Ministry of Defence. With a network of 52 laboratories that are engaged in developing defence technologies covering various fields like aeronautics, armaments, electronics, land combat engineering, life sciences, materials, missiles, and naval systems, DRDO is India's largest a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Towed Array Sonar
A towed array sonar is a system of hydrophones towed behind a submarine or a surface ship on a cable. Trailing the hydrophones behind the vessel, on a cable that can be kilometers long, keeps the array's sensors away from the ship's own noise sources, greatly improving its signal-to-noise ratio, and hence the effectiveness of detecting and tracking faint contacts, such as quiet, low noise-emitting submarine threats, or seismic signals. A towed array offers superior resolution and range compared with hull-mounted sonar. It also covers the Baffles (submarine), baffles, the blind spot of hull-mounted sonar. However, effective use of the system limits a vessel's speed and care must be taken to protect the cable from damage. History During World War I, a towed sonar array known as the "Electric Eel" was developed by Harvey Hayes, a U.S. Navy physicist. This system is believed to be the first towed sonar array design. It employed two cables, each with a dozen hydrophones attached. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sonar
Sonar (sound navigation and ranging or sonic navigation and ranging) is a technique that uses sound propagation (usually underwater, as in submarine navigation) to navigate, measure distances ( ranging), communicate with or detect objects on or under the surface of the water, such as other vessels. "Sonar" can refer to one of two types of technology: ''passive'' sonar means listening for the sound made by vessels; ''active'' sonar means emitting pulses of sounds and listening for echoes. Sonar may be used as a means of acoustic location and of measurement of the echo characteristics of "targets" in the water. Acoustic location in air was used before the introduction of radar. Sonar may also be used for robot navigation, and sodar (an upward-looking in-air sonar) is used for atmospheric investigations. The term ''sonar'' is also used for the equipment used to generate and receive the sound. The acoustic frequencies used in sonar systems vary from very low ( infrasonic) to e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bharat Electronics
Bharat Electronics Limited (BEL) is an Indian public sector aerospace and defence electronics company, headquartered in Bangalore. It primarily manufactures advanced electronic products for ground and aerospace applications. BEL is one of sixteen PSUs under the administration of Ministry of Defence of India. It has been granted ''Navratna'' status by the Government of India. History Bharat Electronics Limited was founded in Bangalore, Karnataka, India in 1954. Starting with the manufacture of a few communication equipment in 1956, BEL started manufacturing receiving valves in 1961, germanium semiconductors in 1962, and radio transmitters for AIR in 1964 with help from the Soviet Union. * In 1966, BEL set up a radar manufacturing facility for the army and in-house R&D. In 1967, BEL began manufacturing transmitting tubes, silicon devices and integrated circuits. The PCB manufacturing facility was established in 1968. * In 1970, BEL started making black & white TV picture tubes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Surface-search Radar
A surface-search radar, sometimes more accurately known as a sea-surface-search radar or naval surveillance radar, is a type of military radar intended primarily to locate objects on the surface of lakes and oceans. Part of almost every modern naval ship, they are also widely used on maritime patrol aircraft and naval helicopters. When mounted on an aircraft, they are sometimes known, in British terminology, as air-to-surface-vessel radar — ASV for short. Similar radars are also widely used on civilian ships and even small pleasure craft, in which case they are more commonly known as marine radar. As with conventional surveillance radars, these systems detect objects from the reflections of radio signals off target objects, especially metal. The range of a surface-search radar is greatly increased compared to other roles due to several aspects of the sea surfaces and the objects in it. In low sea states, water makes an excellent reflector for radio signals, which helps maximize th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
X Band
The X band is the designation for a band of frequencies in the microwave radio region of the electromagnetic spectrum. In some cases, such as in communication engineering, the frequency range of the X band is set at approximately 7.0–11.2 GHz. In radar engineering, the frequency range is specified by the Institute of Electrical and Electronics Engineers (IEEE) as 8.0–12.0 GHz. The X band is used for radar, satellite communication, and wireless computer networks. Radar X band is used in radar applications, including continuous-wave, pulsed, single- polarization, dual-polarization, synthetic aperture radar, and phased arrays. X-band radar frequency sub-bands are used in civil, military, and government institutions for weather monitoring, air traffic control, maritime vessel traffic control, defense tracking, and vehicle speed detection for law enforcement. X band is often used in modern radars. The shorter wavelengths of the X band provide higher-r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tata Advanced Systems
Tata Advanced Systems Limited (TASL) is an Indian aerospace manufacturing, military engineering and defense technology company. It is a fully owned subsidiary of Tata Sons, a holding company for the Tata Group. History TASL entered into a joint venture with Sikorsky Aircraft Corporation to manufacture the Sikorsky S-92 helicopter in India for the domestic civil and military markets. The plan was to have a US$200 million manufacturing plant operational in Hyderabad by 2010. As production began, the first S-92 cabin was delivered in November 2010, and capacity was expected to increase to 36–48 cabins a year. By the end of July 2013, 39 cabins had been assembled. The joint venture with Sikorsky has since been expanded to include the development of aerospace components for other original equipment manufacturers (OEMs). This facility, called Tara, also located in Hyderabad, was completed in 2011 and commenced production in 2012. Another TASL joint-venture, with Lockheed Marti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Terma A/S
Terma A/S is a Danish defense and aerospace manufacturer for both civilian and military applications, and is owned by the Danish company Thrige Holding A/S. It is Denmark's largest company within the aerospace and the defense industry, employing approximately 1,800 people worldwide. The company was founded in 1949 by Orla and Svend Aage Jørgensen; it originally focused on the production of thermometers and manometers for ships and various other metal components. Following its purchase by Thorkild Juncker, Terma A/S refocused itself on the production of electronic measuring instruments along with early radar systems; it expanded rapidly during the 1950s and 1960s. The firm became a leader in defense electronics, and had diversified into air defense systems, aircraft avionics, and parts for missile systems by 1970. It continued to grow, acquiring various other Danish defense firms during the 1990s. In 1999, Terma A/S acted at the prime contractor for the Ørsted satellite, the fi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Secondary Surveillance Radar
Secondary surveillance radar (SSR)''Secondary Surveillance Radar'', Stevens M.C. Artech House, is a radar system used in air traffic control (ATC), that unlike primary radar systems that measure the bearing and distance of targets using the detected reflections of radio signals, relies on targets equipped with a radar Transponder (aviation), transponder, that reply to each interrogation signal by transmitting encoded data such as an identity code, the aircraft's altitude and further information depending on its chosen mode. SSR is based on the military identification friend or foe (IFF) technology originally developed during World War II; therefore, the two systems are still compatible. Monopulse secondary surveillance radar (MSSR), Secondary surveillance radar#Mode S, Mode S, TCAS and ADS-B are similar modern methods of secondary surveillance. Overview Primary radar The rapid World War II, wartime development of radar had obvious applications for air traffic control (ATC) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
