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Weibel Scientific
Weibel Scientific is a Danish engineering company that has specialised in the design and manufacture of doppler radar systems. It has been in operation since 1936, originally being named ''M. P. Weibel'' and having worked as an electronics business throughout the firm's existence. Since the 1970s, the company has focused on becoming a specialised in the field of radar. Having developed an international presence over its decades of existence, Weibel Scientific’s products have been used by a diverse range of operators and for numerous purposes, including the tracking of space vehicles by NASA, as well as the detection of unmanned aerial vehicles and the guidance component of ground-based air defense systems for various nations' militaries. History Weibel Scientific can trace its origins back to the establishment of Danish electronics company ''M. P. Weibel'' in 1936. It was originally named after its founder, Marius Peter Weibel, and has been a technology-orientated firm even in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aktieselskab
''Aktieselskab'' (; abbr.: A/S, or a/s, Unicode ; literally meaning: "stock company") is the Danish name for a stock-based corporation. An ''aktieselskab'' may be either publicly traded or private. Liability The shareholders of an ''aktieselskab'' are not liable for the debts of the company. This can be used to protect the assets of the company against creditors by forming a group of companies. If an A/S is owned by a holding company (typically another A/S), the profit from the production company can be transferred to the holding company. Since there is no liability for the owners of an A/S, creditors from the production company will not be able to claim the profit in case of bankruptcy. Professional creditors, such as banks, protect themselves from this by demanding that the holding company guarantees the debts of the production company. Formation of an ''aktieselskab'' The formation of an ''aktieselskab'' requires a number of steps, including the following: *Notification c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Army
The United States Army (USA) is the land warfare, land military branch, service branch of the United States Armed Forces. It is one of the eight Uniformed services of the United States, U.S. uniformed services, and is designated as the Army of the United States in the United States Constitution, U.S. Constitution.Article II, section 2, clause 1 of the United States Constitution (1789). See alsTitle 10, Subtitle B, Chapter 301, Section 3001 The oldest and most senior branch of the U.S. military in order of precedence, the modern U.S. Army has its roots in the Continental Army, which was formed 14 June 1775 to fight the American Revolutionary War (1775–1783)—before the United States was established as a country. After the Revolutionary War, the Congress of the Confederation created the United States Army on 3 June 1784 to replace the disbanded Continental Army.Library of CongressJournals of the Continental Congress, Volume 27/ref> The United States Army considers itself to be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Defense Companies Of Denmark
Defense or defence may refer to: Tactical, martial, and political acts or groups * Defense (military), forces primarily intended for warfare * Civil defense, the organizing of civilians to deal with emergencies or enemy attacks * Defense industry, industry which manufactures and sells weapons and military technology * Self-defense, the use of force to defend oneself * Haganah (Hebrew for "The Defence"), a paramilitary organization in British Palestine * National security, security of a nation state, its citizens, economy, and institutions, as a duty of government ** Defence diplomacy, pursuit of foreign policy objectives through the peaceful employment of defence resources ** Ministry of defence or department of defense, a part of government which regulates the armed forces ** Defence minister, a cabinet position in charge of a ministry of defense * International security, measures taken by states and international organizations to ensure mutual survival and safety Sports ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electronics Companies Of Denmark
The field of electronics is a branch of physics and electrical engineering that deals with the emission, behaviour and effects of electrons using electronic devices. Electronics uses active devices to control electron flow by amplification and rectification, which distinguishes it from classical electrical engineering, which only uses passive effects such as resistance, capacitance and inductance to control electric current flow. Electronics has hugely influenced the development of modern society. The central driving force behind the entire electronics industry is the semiconductor industry sector, which has annual sales of over $481 billion as of 2018. The largest industry sector is e-commerce, which generated over $29 trillion in 2017. History and development Electronics has hugely influenced the development of modern society. The identification of the electron in 1897, along with the subsequent invention of the vacuum tube which could amplify and rectify small el ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radar Tracker
A radar tracker is a component of a radar system, or an associated command and control (C2) system, that associates consecutive radar observations of the same target into tracks. It is particularly useful when the radar system is reporting data from several different targets or when it is necessary to combine the data from several different radars or other sensors. Role of the radar tracker A classical rotating air surveillance radar system detects target echoes against a background of noise. It reports these detections (known as "plots") in polar coordinates representing the range and bearing of the target. In addition, noise in the radar receiver will occasionally exceed the detection threshold of the radar's Constant false alarm rate detector and be incorrectly reported as targets (known as false alarms). The role of the radar tracker is to monitor consecutive updates from the radar system (which typically occur once every few seconds, as the antenna rotates) and to determ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Laser Surface Velocimeter
A laser surface velocimeter (LSV) is a non-contact optical speed sensor measuring velocity and length on moving surfaces. Laser surface velocimeters use the laser Doppler principle to evaluate the laser light scattered back from a moving object. They are widely used for process and quality control in industrial production processes. Principle of operation The differential Doppler process The Doppler effect (or Doppler shift) is the change in frequency of a wave for an observer moving relative to the source of the wave. The wave has a frequency f and propagates at a speed c When the observer moves at a velocity of v relative to the source, they receive a different frequency f' according to :f' = f ( \frac ) = f \left( 1-\frac \right) The above analysis is an approximation for small velocities in comparison to the speed of light which is fulfilled very well for practically all technically relevant velocities. To make a measurement on moving objects, which can in principle be of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Muzzle Velocity
Muzzle velocity is the speed of a projectile ( bullet, pellet, slug, ball/ shots or shell) with respect to the muzzle at the moment it leaves the end of a gun's barrel (i.e. the muzzle). Firearm muzzle velocities range from approximately to in black powder muskets, to more than in modern rifles with high-velocity cartridges such as the .220 Swift and .204 Ruger, all the way to for tank guns firing kinetic energy penetrator ammunition. To simulate orbital debris impacts on spacecraft, NASA launches projectiles through light-gas guns at speeds up to . Projectile velocity For projectiles in unpowered flight, its velocity is highest at leaving the muzzle and drops off steadily because of air resistance. Projectiles traveling less than the speed of sound (about in dry air at sea level) are ''subsonic'', while those traveling faster are ''supersonic'' and thus can travel a substantial distance and even hit a target before a nearby observer hears the "bang" of the sho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Continuous Wave
A continuous wave or continuous waveform (CW) is an electromagnetic wave of constant amplitude and frequency, typically a sine wave, that for mathematical analysis is considered to be of infinite duration. It may refer to e.g. a laser or particle accelerator having a continuous output, as opposed to a pulsed output. Continuous wave is also the name given to an early method of radio transmission, in which a sinusoidal carrier wave is switched on and off. Information is carried in the varying duration of the on and off periods of the signal, for example by Morse code in early radio. In early wireless telegraphy radio transmission, CW waves were also known as "undamped waves", to distinguish this method from damped wave signals produced by earlier ''spark gap'' type transmitters. Radio Transmissions before CW Very early radio transmitters used a spark gap to produce radio-frequency oscillations in the transmitting antenna. The signals produced by these spark-gap transmitt ... [...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 rather indefinitely 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Allerød Municipality
Allerød Kommune is a municipality ( Danish, '' kommune'') on the island of Zealand (''Sjælland'') in eastern Denmark. The municipality covers an area of 67 km2, and has a population of 25,867 (1 January 2022). Its mayor is Karsten Längerich of the political party Venstre. Overview The main town, Lillerød (often referred to as 'Allerød'), is also the site of the municipal council. Smaller towns inside the municipality are Blovstrød and the towns of Lynge and Uggeløse, which have grown together Allerød municipality was not merged with other municipalities on 1 January 2007 as part of nationwide ''Kommunalreformen'' ("The Municipality Reform" of 2007). The warm period after the last ice age (Wisconsin glaciation) is named the Allerød Oscillation after an archaeological site found at Allerød. In 1797 six Bronze Age lurs was found in Lynge at Brudevælte. Allerød is part of the Green Cities concept The zip/postal code for Lillerød is 3450. Economy Aller ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NASAMS
NASAMS (Norwegian Advanced Surface-to-Air Missile System, also known as the National Advanced Surface-to-Air Missile System) is a distributed and networked short- to medium-range ground-based air defense system developed by Kongsberg Defence & Aerospace (KDA) and Raytheon. The system defends against unmanned aerial vehicles (UAVs), helicopters, cruise missiles, unmanned combat aerial vehicles (UCAVs), and fixed wing aircraft, firing any of a wide range of existing missiles. NASAMS was the first application of a surface-launched AIM-120 AMRAAM (Advanced Medium Range Air-to-Air Missile). NASAMS 2 is an upgraded version of the system capable of using Link 16, which has been operational since 2007. , NASAMS 3 is the latest upgrade; deployed in 2019, it adds capability to fire AIM-9 Sidewinder and IRIS-T SLS short-range missiles () and AMRAAM-ER extended-range missiles (), and introduces mobile air-liftable launchers. NASAMS has proven interoperability with longer range systems such ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Norwegian Army
The Norwegian Army ( no, Hæren) is the land warfare service branch of the Norwegian Armed Forces. The Army is the oldest of the Norwegian service branches, established as a modern military organization under the command of the King of Norway in 1628. The Army participated in various continental wars during the 17th, 18th, and 19th centuries as well, both in Norway and abroad, especially in World War II (1939–1945). It constitutes part of the Norwegian military contribution as a charter member of the North Atlantic Treaty Organization (NATO) since 1949. History Creation of the Norwegian Army After the Kalmar War broke out in 1611, the Danish-Norwegian king, Christian IV tried to revive the leidang, with dire results. As the Norwegian peasantry had not been armed or trained in the use of arms for nearly three centuries, they were not able to fight. Soldiers deserted or were captured. The soldiers had to participate in military drills, while providing supplementary labor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
