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Weather radar in Norman, Oklahoma with rainshaft Weather (WF44) radar dish University of Oklahoma OU-PRIME C-band, polarimetric, weather radar during construction. Weather radar, also called weather surveillance radar (WSR) and Doppler weather radar, is a type of radar used to locate precipitation, calculate its motion, and estimate its type (rain, snow, hail etc.).
Marine radars are used by ships for collision avoidance and navigation purposes. The frequency band of radar used on most ships is X band (9 GHz/3 cm), but S band (3 GHz/10 cm) radar is also installed on most oceangoing ships to provide better detection of ships in rough sea and heavy rain condition.
AN/APS-108 airborne radar for B-52D; AN/APS-111 improved AN/APS-96 ultra high frequency surveillance radar by General Electric for E-2 Hawkeye; AN/APS-112 improved AN/APS-59 AWACS radar; AN/APS-113 weather radar by Bendix Corporation for UH-1 and EC-47; AN/APS-115 maritime surveillance radar with two radar antennas by Texas Instruments for P-3 ...
The production radar was manufactured by General Electric and Hazeltine. [8] The first version, the AN/APS-20A, had, initially, an 8-foot-4-inch (2.54 m) antenna and operated on a frequency of 2850 MHz in the S band. [3] The radar featured large sidelobes. [9] Later a slightly smaller 8 ft (2.4 m) antenna was used. [8]
NEXRAD or Nexrad (Next-Generation Radar) is a network of 159 high-resolution S-band 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 Department of Transportation, and the U.S. Air Force within the ...
Radar transmission frequency spectrum of a trapezoid pulse profile Recent advances in signal processing techniques have made the use of pulse profiling or shaping more common. By shaping the pulse envelope before it is applied to the transmitting device, say to a cosine law or a trapezoid, the bandwidth can be limited at source, with less ...
The first Russian airborne radar, ... a Doppler weather radar with a pulse rate of 2 kHz and transmit frequency of 1 GHz can reliably measure weather speed up to at ...
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 ...