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ARMOR Doppler Weather Radar
ARMOR (Advanced Radar for Meteorological and Operational Research) Doppler weather radar is a C-Band, Dual-Polarimetric Doppler Weather Radar, located at the Huntsville International Airport in Huntsville, Alabama. The radar is a collaborative effort between WHNT-TV and the University of Alabama in Huntsville. Live data for the radar is only available to a limited audience, such as UAH employees and NWS meteorologists. All ARMOR data is archived at the National Space Science and Technology Center located on the UAH campus. History This radar was originally a National Weather Service (NWS) local warning radar (WSR-74C) installed in 1977. It was refurbished and upgraded to Pulse-Doppler capabilities in 1991. When the NEXRAD network replaced previous NWS radars, it was donated to the UAH Department of Atmospheric Science in 2002 and upgraded to dual-polarimetry using the SIGMET Antenna Mounted Receiver in the fall 2004. Baron Radar division of Baron Services, Inc., Huntsville, AL, u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
C Band (IEEE)
The C band is a designation by the Institute of Electrical and Electronics Engineers (IEEE) for a portion of the electromagnetic spectrum in the microwave range of frequencies ranging from 4.0 to 8.0 gigahertz (GHz). However, the U.S. Federal Communications Commission C band proceeding and auction, designated 3.7–4.2 GHz as C band. The C band is used for many satellite communications transmissions, some Wi-Fi devices, some cordless telephones, as well as some Radar and weather radar systems. Use in satellite communication The communications C band was the first frequency band that was allocated for commercial telecommunications via satellites. The same frequencies were already in use for terrestrial microwave radio relay chains. Nearly all C-band communication satellites use the band of frequencies from 3.7 to 4.2 GHz for their downlinks, and the band of frequencies from 5.925 to 6.425 GHz for their uplinks. Note that by using the band from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Doppler Weather Radar
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 screen, 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 on its own and is now used by national weather services, research departments in universities, and in television station ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Huntsville International Airport
Huntsville International Airport (Carl T. Jones Field) is a public airport and spaceport ten miles southwest of downtown Huntsville, in Madison County, Alabama, United States. The airport is part of the Port of Huntsville (along with the International Intermodal Center and Jetplex Industrial Park), and serves the Huntsville-Decatur Combined Statistical Area. Opened in October 1967 as the Huntsville Jetport, this was the third airport for Huntsville. Today it has 12 gates with restrooms, shops, restaurants, phones and murals depicting aviation and space exploration scenes. There is a Four Points by Sheraton above the ticketing area/lobby, and adjacent to the terminal is a parking garage and to opposite sides are the control tower and a golf course. The airport's west runway, at , is the second longest commercial runway in the southeastern United States, being shorter than the longest runway at Miami International Airport. Huntsville is frequently used as a diversion airport fro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Huntsville, Alabama
Huntsville is a city in Madison County, Limestone County, and Morgan County, Alabama, United States. It is the county seat of Madison County. Located in the Appalachian region of northern Alabama, Huntsville is the most populous city in the state. Huntsville was founded within the Mississippi Territory in 1805 and became an incorporated town in 1811. When Alabama was admitted as a state in 1819, Huntsville was designated for a year as the first capital, before that was moved to more central settlements. The city developed across nearby hills north of the Tennessee River, adding textile mills in the late nineteenth century. Its major growth has taken place since World War II. During the war, the Army established Redstone Arsenal near here with a chemical weapons plant, and nearby related facilities. After the war, additional research was conducted at Redstone Arsenal on rockets, followed by adaptations for space exploration. NASA's Marshall Space Flight Center, the Unit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
WHNT-TV
WHNT-TV (channel 19) is a television station in Huntsville, Alabama, United States, affiliated with CBS. It is owned by Nexstar Media Group alongside Florence-licensed CW owned-and-operated station WHDF (channel 15). Both stations share studios on Holmes Avenue Northwest in downtown Huntsville, while WHNT-TV's transmitter is located on Monte Sano Mountain. The station also operates three news bureaus: Decatur, Sand Mountain (Albertville), and Shoals (Florence). However, master control and some internal operations are based at the studios of Nexstar sister station and fellow CBS affiliate WSPA-TV in Spartanburg, South Carolina. History Early history WHNT began operations on Thanksgiving Day, November 28, 1963 (the first new station to be launched after President John F. Kennedy was assassinated). It has been a CBS affiliate for its entire existence, and is the only Huntsville-area station to have never changed its affiliation. The Federal Communications Commission (FCC) original ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Alabama In Huntsville
The University of Alabama in Huntsville (UAH) is a public research university in Huntsville, Alabama. The university is accredited by the Southern Association of Colleges and Schools and comprises nine colleges: arts, humanities & social sciences; business; education; engineering; honors; nursing; professional & continuing studies; science; and graduate. The university's enrollment is approximately 10,000. It is part of the University of Alabama System and is classified among "R1: Doctoral Universities: Very High Research Activity". History The genesis for a publicly funded institution of higher education in Huntsville was years in the making. Beginning in January 1950 as an extension of the University of Alabama and known as the University of Alabama Huntsville Center, classes were first taught at West Huntsville High School. However, the university's direction changed in 1961, when Wernher von Braun, a German rocket scientist brought to the United States under Operation Pape ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Space Science And Technology Center
The National Space Science and Technology Center (NSSTC) in Huntsville, Alabama is a joint research venture between NASA and the seven research universities of the state of Alabama, represented by the Space Science and Technology Alliance. The aim of the NSSTC is to foster collaboration in research between government, academia, and industry. It consists of seven research centers: Space Science, Global Hydrology & Climate, Information Technology, Advanced Optics, Biotechnology, Material, and Propulsion. The west face of the building also houses the National Weather Service forecast office in Huntsville. Each center is managed by researchers from either Marshall Space Flight Center, the host NASA facility, or the University of Alabama in Huntsville (UAH), the host university. For UAH purposes, the building is known as Robert "Bud" Cramer Research Hall and houses the Atmospheric Science and Space Science programs. List of participating universities *Alabama A&M University *Auburn Uni ... [...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, Silver Spring, Maryland, within the Washington metropolitan area. The agency was known as the United States Weather Bureau from 1890 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 o ... [...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, 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 km (313 n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pulse-Doppler Radar
A pulse-Doppler radar is a radar system that determines the range to a target using pulse-timing techniques, and uses the Doppler effect of the returned signal to determine the target object's velocity. It combines the features of pulse radars and continuous-wave radars, which were formerly separate due to the complexity of the electronics. The first operational Pulse Doppler radar was in the CIM-10 Bomarc, an American long range supersonic missile powered by ramjet engines, and which was armed with a W40 nuclear weapon to destroy entire formations of attacking enemy aircraft. Pulse-Doppler systems were first widely used on fighter aircraft starting in the 1960s. Earlier radars had used pulse-timing in order to determine range and the angle of the antenna (or similar means) to determine the bearing. However, this only worked when the radar antenna was not pointed down; in that case the reflection off the ground overwhelmed any returns from other objects. As the ground moves at the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solid State (electronics)
Solid-state electronics means semiconductor electronics: electronic equipment using semiconductor devices such as transistors, diodes and integrated circuits (ICs). The term is also used as an adjective for devices in which semiconductor electronics that have no moving parts replace devices with moving parts, such as the solid-state relay in which transistor switches are used in place of a moving-arm electromechanical relay, or the solid-state drive (SSD) a type of semiconductor memory used in computers to replace hard disk drives, which store data on a rotating disk. History The term "solid-state" became popular at the beginning of the semiconductor era in the 1960s to distinguish this new technology based on the transistor, in which the electronic action of devices occurred in a solid state, from previous electronic equipment that used vacuum tubes, in which the electronic action occurred in a gaseous state. A semiconductor device works by controlling an electric current c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The University Of Alabama In Huntsville
The University of Alabama in Huntsville (UAH) is a public research university in Huntsville, Alabama. The university is accredited by the Southern Association of Colleges and Schools and comprises nine colleges: arts, humanities & social sciences; business; education; engineering; honors; nursing; professional & continuing studies; science; and graduate. The university's enrollment is approximately 10,000. It is part of the University of Alabama System and is classified among "R1: Doctoral Universities: Very High Research Activity". History The genesis for a publicly funded institution of higher education in Huntsville was years in the making. Beginning in January 1950 as an extension of the University of Alabama and known as the University of Alabama Huntsville Center, classes were first taught at West Huntsville High School. However, the university's direction changed in 1961, when Wernher von Braun, a German rocket scientist brought to the United States under Operation Pape ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
