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Wasserman Radar
The Wasserman radar was an early-warning radar built by Germany during World War II. The radar was a development of FuMG 80 Freya and was operated during World War II for long range detection. It was developed under the direction of Theodor Schultes, beginning in 1942. Wasserman was based on largely unchanged Freya electronics, but used an entirely new antenna array in order to improve range, height-finding and bearing precision. Development Seven different versions were developed. The two most important versions are: * The radio measurement equipment FuMG.41 ''Wassermann L'' (German: ''Leicht'' = light) was a constellation of four Freya antennas on top of each other, mounted on a rotatable steel lattice mast. * A later version was the FuMG.42 ''Wassermann S'' (German: ''Schwer'' = heavy). For this eight Freya antenna arrays were mounted on a pipe mast in two columns, each four antennae high. The combination of the antennae in this way resulted in a concentration of the ra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bergen Aan Zee
Bergen aan Zee is a village and seaside resort on the North Sea coast in the Dutch province of North Holland. It is a part of the municipality of Bergen, and lies about 9 km west of Alkmaar. History The village was first mentioned in 1848 as Bergen aan Zee, and means Bergen Bergen (), historically Bjørgvin, is a city and municipality in Vestland county on the west coast of Norway. , its population is roughly 285,900. Bergen is the second-largest city in Norway. The municipality covers and is on the peninsula o ... on the sea. It was officially founded in 1906. A new seaside village was built as a result of private investment by large landowners and the mayor of Bergen. Bergen aan Zee has grown into a beach resort town, popular for surfing and sailing. The majority of the visitors come either from the Netherlands or Germany, to enjoy the sandy beach. It is also home to Zee Aquarium Bergen. Between 1909 and 1955 it was the terminus of a light rail line from Alkmaar to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Early-warning Radar
An early-warning radar is any radar system used primarily for the long-range detection of its targets, i.e., allowing defences to be alerted as ''early'' as possible before the intruder reaches its target, giving the air defences the maximum time in which to operate. This contrasts with systems used primarily for tracking or gun laying, which tend to offer shorter ranges but offer much higher accuracy. EW radars tend to share a number of design features that improve their performance in the role. For instance, EW radar typically operates at lower frequencies, and thus longer wavelengths, than other types. This greatly reduces their interaction with rain and snow in the air, and therefore improves their performance in the long-range role where their coverage area will often include precipitation. This also has the side-effect of lowering their optical resolution, but this is not important in this role. Likewise, EW radars often use much lower pulse repetition frequency to maximi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Early-warning Radar
An early-warning radar is any radar system used primarily for the long-range detection of its targets, i.e., allowing defences to be alerted as ''early'' as possible before the intruder reaches its target, giving the air defences the maximum time in which to operate. This contrasts with systems used primarily for tracking or gun laying, which tend to offer shorter ranges but offer much higher accuracy. EW radars tend to share a number of design features that improve their performance in the role. For instance, EW radar typically operates at lower frequencies, and thus longer wavelengths, than other types. This greatly reduces their interaction with rain and snow in the air, and therefore improves their performance in the long-range role where their coverage area will often include precipitation. This also has the side-effect of lowering their optical resolution, but this is not important in this role. Likewise, EW radars often use much lower pulse repetition frequency to maximi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World War II
World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposing military alliances: the Allies and the Axis powers. World War II was a total war that directly involved more than 100 million personnel from more than 30 countries. The major participants in the war threw their entire economic, industrial, and scientific capabilities behind the war effort, blurring the distinction between civilian and military resources. Aircraft played a major role in the conflict, enabling the strategic bombing of population centres and deploying the only two nuclear weapons ever used in war. World War II was by far the deadliest conflict in human history; it resulted in 70 to 85 million fatalities, mostly among civilians. Tens of millions died due to genocides (including the Holocaust), starvation, ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Freya Radar
Freya was an early warning radar deployed by Germany during World War II; it was named after the Norse goddess Freyja. During the war, over a thousand stations were built. A naval version operating on a slightly different wavelength was also developed as the ''Seetakt''. Development First tests of what would become the "''Freya''" were conducted in early 1937, with initial delivery of an operational radar to the ''Kriegsmarine'' in 1938 by the GEMA company. Freya supported an early version of Identification friend or foe (IFF). Aircraft equipped with the FuG 25a "''Erstling''" IFF system could be successfully queried across ranges of over 100 km. The "AN" version gained a switchable phasing line for the antenna. Switching in the phasing line led to a phase displacement of the antenna's radiation pattern and with that, a squinting to the left or right. This enabled the system in effect to switch from the rather broad "scanning for maxima" to narrow lobe switching. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Theodor Schultes
Theodor Schultes or Theodor Jakob Joseph Schultes (1901-1981) was a German engineer of radio frequency technology and a pioneer of radar technology . His best known developments include the radio measuring devices with the code names Freya, Aquarius and Jagdschloß. Education Schultes, born the son of a savings bank director, attended high school in Völklingen until he graduated from high school. After one year of practical work at the Röchling factories, he studied electrical engineering at the Technical University of Darmstadt Technical may refer to: * Technical (vehicle), an improvised fighting vehicle * Technical analysis, a discipline for forecasting the future direction of prices through the study of past market data * Technical drawing, showing how something is co ... from 1921 to 1926. He then worked there as a research assistant, from 1929 to 1933 as an assistant, and in 1934 he did his doctorate in electrical engineering and information technology. Career In 1933 he ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Height Finder
A height finder is a ground-based aircraft altitude measuring device. Early height finders were optical range finder devices combined with simple mechanical computers, while later systems migrated to radar devices. The unique vertical oscillating motion of height finder radars led to them also being known as nodding radar. Devices combining both optics and radar were deployed by the U.S. Military. Optical In World War II, a height finder was an optical rangefinder used to determine the altitude of an aircraft (actually the slant range from the emplacement which was combined with the angle of sight, in a mechanical computer, to produce altitude), used to direct anti-aircraft guns. Examples of American and Japanese versions exist. In the Soviet Union it was usually combined with optical rangefinders. Radar A height finder radar is a type of 2-dimensional radar that measures altitude of a target. The operator slews the antenna toward a desired bearing, identifies a target ec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lattice Mast
Lattice masts, or cage masts, or basket masts, are a type of observation mast common on United States Navy major warships in the early 20th century. They are a type of hyperboloid structure, whose weight-saving design was invented by the Russian engineer Vladimir Shukhov. They were used most prominently on American dreadnought battleships and armored cruisers of the World War I era. In the age of sail, masts were required to support the sails, and lookouts were posted on them; with the advent of engine-powered warships, masts were retained and used for observation and to spot fall of shot. The purpose of the lattice structure was to make the posts less vulnerable to shells from enemy ships, and to better absorb the shock caused by firing heavy guns, isolating the delicate fire control equipment (rangefinders, etc.) mounted on the mast tops. However, the masts were found to be easily damaged by the inclement weather experienced at sea by naval ships during typhoons and hurricanes: ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Effective Radiated Power
Effective radiated power (ERP), synonymous with equivalent radiated power, is an IEEE standardized definition of directional radio frequency (RF) power, such as that emitted by a radio transmitter. It is the total power in watts that would have to be radiated by a half-wave dipole antenna to give the same radiation intensity (signal strength or power flux density in watts per square meter) as the actual source antenna at a distant receiver located in the direction of the antenna's strongest beam (main lobe). ERP measures the combination of the power emitted by the transmitter and the ability of the antenna to direct that power in a given direction. It is equal to the input power to the antenna multiplied by the gain of the antenna. It is used in electronics and telecommunications, particularly in broadcasting to quantify the apparent power of a broadcasting station experienced by listeners in its reception area. An alternate parameter that measures the same thing is effec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wassermann Cylinder Chimney Radar Illustration
Wasserman or Wassermann is a surname. Notable people with the surname include: * Aaron E. Wasserman (1920–2015), American food scientist * Aharon Wasserman (born 1986), American entrepreneur and software designer * Al Wasserman (born 1921), American film maker * Anatoly Wasserman (born 1952), Russian journalist and political pundit * Antony Wassermann (born 1957), British mathematician * August von Wassermann (1866–1925), German bacteriologist * Bob Wasserman (1934–2011), American politician and police chief, Mayor of Fremont, California * Cale Wassermann (born 1983), American soccer coach * Casey Wasserman (born 1974), American entertainment executive and owner of the Los Angeles Avengers * Dale Wasserman (19142008), American playwright * Dan Wasserman, American political cartoonist * Dave Wasserman (born 1984), American political analyst * Debbie Wasserman Schultz (born 1966), American politician from Florida * Dora Wasserman (1919–2003), actress and founder of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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