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WSR-57
WSR-57 radars were the primary weather surveillance radar used by the United States for over 35 years. The National Weather Service operated a network of this model radar across the country, watching for severe weather. History The WSR-57 (Weather Surveillance Radar – 1957) was the first 'modern' weather radar. Initially commissioned at the Miami Hurricane Forecast Center, the WSR-57 was installed in other parts of the Contiguous United States (CONUS). The WSR-57 was the first generation of radars designed expressly for a national warning network. The WSR-57 was designed in 1957 by Dewey Soltow using World War II technology, using modified versions of those used by United States Navy aircraft. In accordance with the Joint Electronics Type Designation System, it was designated AN/FPS-41, as the 41st design of an Army-Navy fixed radar(pulsed) electronic device for searching. It provided only coarse reflectivity data and no velocity data, which made it extremely difficult to pre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
WSR-74
WSR-74 radars were Weather Surveillance Radars designed in 1974 for the National Weather Service. They were added to the existing network of the WSR-57 model to improve forecasts and severe weather warnings. Some have been sold to other countries like Australia, Greece, and Pakistan. Radar properties There are two types in the WSR-74 series, which are almost identical except for operating frequency. The WSR-74C (used for local warnings) operates in the C band (IEEE), C band, and the WSR-74S (used in the national network) operates in the S band (like the WSR-57 and the current WSR-88D). S band frequencies are better suited because they are not attenuated significantly in heavy rain while the C Band is strongly attenuated, and has a generally shorter maximum effective range. The WSR-74C uses a wavelength of 5.4 cm.Paul Sirvatka. "WSR - Weather Surveillance Radar." Radar. College of DuPage. 4 Apr. 200 It also has a dish diameter of 8 feet, and a maximum range of 579 k ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Weather Service
The National Weather Service (NWS) is an Government agency, agency of the Federal government of the United States, United States federal government that is tasked with providing weather forecasts, warnings of hazardous weather, and other weather-related products to organizations and the public for the purposes of protection, safety, and general information. It is a part of the National Oceanic and Atmospheric Administration (NOAA) branch of the United States Department of Commerce, Department of Commerce, and is headquartered in Silver Spring, Maryland, within the Washington metropolitan area. The agency was known as the United States Weather Bureau from 1891 until it adopted its current name in 1970. The NWS performs its primary task through a collection of national and regional centers, and 122 local List of National Weather Service Weather Forecast Offices, Weather Forecast Offices (WFOs). As the NWS is an agency of the U.S. federal government, most of its products are in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Hurricane Center
The National Hurricane Center (NHC) is the division of the United States' NOAA/National Weather Service responsible for tracking and predicting tropical weather systems between the IERS Reference Meridian, Prime Meridian and the 140th meridian west poleward to the 30th parallel north in the northeast Pacific Ocean and the 31st parallel north in the northern Atlantic Ocean. The agency, which is co-located with the National Weather Service Miami, Florida, Miami branch of the National Weather Service, is situated on the campus of Florida International University in University Park, Florida, University Park, Miami, Miami, Florida. The NHC's Tropical Analysis and Forecast Branch (TAFB) routinely issues marine forecasts, in the form of graphics and high seas forecasts year round, with the Ocean Prediction Center having backup responsibility for this unit. The Technology and Science Branch (TSB) provides technical support for the center, which includes new infusions of technology from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Military Electronics Of The United States
This article lists American military electronic instruments/systems along with brief descriptions. This list specifically identifies electronic devices which are assigned designations according to the Joint Electronics Type Designation System, beginning with the AN/ prefix. They are grouped below by the first designation letter following this prefix. The list is organized as sorted tables that also reflect the purpose, uses and manufacturers of each listed item. A AAx - Piloted Aircraft Invisible Light, Heat Radiation Systems ACx - Piloted Aircraft Signal Carrier, Communications ADx - Piloted Aircraft Radioactivity Detection, Identification, and Computation (RADIAC) AJx - Piloted Aircraft Electromechanical/Inertial Systems ALx - Piloted Aircraft Countermeasures Systems AMx - Aircraft Meteorological Systems APx - Piloted Aircraft Radar Systems AQx - Piloted Aircraft Sonar Systems ARx - Piloted Aircraft Radio Systems ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Radars
A radar is an electronic system used to determine and detect the range of target and maps various types of targets. This is a list of radars. Argentina Australia Brazil Egypt Europe India Military Airborne *LCA MMR - 3D advanced, lightweight multimode fire control radar for LCA Tejas, HAL Tejas Mk1 aircraft derived from EL/M-2032. * DRDO AEW&CS, Netra AEW&CS - 3D AESA Airborne early warning and control, AEW&C radar installed on an ERJ 145 aircraft. Naval *XV-2000 3D airborne naval surveillance radar for Dornier 228 maritime patrol aircraft. *Revathi 3D Naval Medium range surveillance radar derived from the 3D CAR for Shivalik-class frigate, Shivalik-class frigates. Land-based *Swordfish Long Range Tracking Radar, Swordfish LRTR - Active electronically scanned array, AESA long-range tracking radar for Ballistic missile defence surveillance and fire control. *Arudhra MPR - Static 4D AESA Medium power radar for airspace surveillance for ranges exceeding 300 km. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NEXRAD
NEXRAD or Nexrad (Next-Generation Radar) is a network of 159 high-resolution S-band pulse-Doppler radar, Doppler weather radars operated by the National Weather Service (NWS), an agency of the National Oceanic and Atmospheric Administration (NOAA) within the United States Department of Commerce, the Federal Aviation Administration (FAA) within the United States Department of Transportation, Department of Transportation, and the United States Air Force, U.S. Air Force within the United States Department of Defense, Department of Defense. Its technical name is WSR-88D (''Weather Surveillance Radar, 1988, Doppler''). NEXRAD detects precipitation (meteorology), precipitation and Earth's atmosphere, atmospheric movement or wind. It returns data which when processed can be displayed in a mosaic map which shows patterns of precipitation and its movement. The radar system operates in two basic modes, selectable by the operator – a slow-scanning ''clear-air mode'' for analyzing air moveme ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Weather Radar
A weather radar, also called weather surveillance radar (WSR) and Doppler weather radar, is a type of radar used to locate precipitation (meteorology), precipitation, calculate its motion, and estimate its type (rain, snow, hail etc.). Modern weather radars are mostly pulse-Doppler radars, capable of detecting the motion of rain droplets in addition to the intensity of the precipitation. Both types of data can be analyzed to determine the structure of storms and their potential to cause severe weather. During Radar in World War II, World War II, radar operators discovered that weather was causing echoes on their screens, masking potential enemy targets. Techniques were developed to filter them, but scientists began to study the phenomenon. Soon after the war, military surplus, surplus radars were used to detect precipitation. Since then, weather radar has evolved and is used by national weather services, research departments in universities, and in television stations' weather d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radars Of The United States Air Force
Radar is a system that uses radio waves to determine the distance (''ranging''), direction (geometry), direction (azimuth and elevation angles), and radial velocity of objects relative to the site. It is a radiodetermination method used to detect and track aircraft, Marine radar, ships, spacecraft, guided missiles, motor vehicles, map Weather radar, weather formations, and terrain-following radar, terrain. The term ''RADAR'' was coined in 1940 by the United States Navy as an acronym and initialism, acronym for "radio detection and ranging". The term ''radar'' has since entered English and other languages as an wikt:anacronym, anacronym, a common noun, Acronym#All-caps style, losing all capitalization. A radar system consists of a transmitter producing electromagnetic waves in the radio spectrum, radio or microwave domain, a transmitting antenna (radio), antenna, a receiving antenna (often the same antenna is used for transmitting and receiving) and a radio receiver, receiver an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1957 Meteorology
Events January * January 1 – The Saarland joins West Germany. * January 3 – Hamilton Watch Company introduces the first electric watch. * January 5 – South African player Russell Endean becomes the first batsman to be Dismissal (cricket), dismissed for having handled the ball, in Test cricket. * January 9 – British Prime Minister Anthony Eden resigns. * January 10 – Harold Macmillan becomes Prime Minister of the United Kingdom. * January 11 – The African Convention is founded in Dakar. * January 14 – Kripalu Maharaj is named fifth Jagadguru (world teacher), after giving seven days of speeches before 500 Hindu scholars. * January 15 – The film ''Throne of Blood'', Akira Kurosawa's reworking of ''Macbeth'', is released in Japan. * January 20 ** Israel withdraws from the Sinai Peninsula (captured from Egypt on October 29, 1956). * January 26 – The Ibirapuera Planetarium (the first in the Southern Hemisphere) is inaugurated in the city of São Paulo, Brazil. F ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Weather Service Weather Radars
National may refer to: Common uses * Nation or country ** Nationality – a ''national'' is a person who is subject to a nation, regardless of whether the person has full rights as a citizen Places in the United States * National, Maryland, census-designated place * National, Nevada, ghost town * National, Utah, ghost town * National, West Virginia, unincorporated community Commerce * National (brand), a brand name of electronic goods from Panasonic * National Benzole (or simply known as National), former petrol station chain in the UK, merged with BP * National Book Store, a bookstore and office supplies chain in the Philippines * National Car Rental, an American rental car company * National Energy Systems, a former name of Eco Marine Power * National Entertainment Commission, a former name of the Media Rating Council * National Motor Vehicle Company, Indianapolis, Indiana, USA 1900–1924 * National Radio Company, Malden, Massachusetts, USA 1914–1991 * National Supermarket ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
KELO-TV
KELO-TV (channel 11) is a television station in Sioux Falls, South Dakota, United States, affiliated with CBS, MyNetworkTV, and The CW Plus (as an owned-and-operated station). The station is owned by Nexstar Media Group, and maintains studios on Phillips Avenue in downtown Sioux Falls; its transmitter is located near Rowena, South Dakota. KELO-TV is broadcast by three high-power broadcast relay station#Semi-satellites, semi-satellites—KDLO-TV in Florence, South Dakota, Florence (channel 3, serving Watertown, South Dakota, Watertown), KPLO-TV in Reliance, South Dakota, Reliance (channel 6, serving Pierre, South Dakota, Pierre), and KCLO-TV in Rapid City (channel 15). These transmitters and others, together branded as the KELOLAND Media Group, broadcast KELO programs to all of South Dakota, southwestern Minnesota, and northwestern Iowa, an area the station calls "KELOLAND" (). In the Sioux Falls media market—including central and eastern South Dakota—KELO-TV has long been th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
30 Rockefeller Plaza New York City RCA GE Building
3 (three) is a number, numeral and digit. It is the natural number following 2 and preceding 4, and is the smallest odd prime number and the only prime preceding a square number. It has religious and cultural significance in many societies. Evolution of the Arabic digit The use of three lines to denote the number 3 occurred in many writing systems, including some (like Roman and Chinese numerals) that are still in use. That was also the original representation of 3 in the Brahmic (Indian) numerical notation, its earliest forms aligned vertically. However, during the Gupta Empire the sign was modified by the addition of a curve on each line. The Nāgarī script rotated the lines clockwise, so they appeared horizontally, and ended each line with a short downward stroke on the right. In cursive script, the three strokes were eventually connected to form a glyph resembling a with an additional stroke at the bottom: ३. The Indian digits spread to the Caliphate in the 9th c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
