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A Doppler radar is a specialized radar that uses the Doppler effect to produce velocity data about objects at a distance. [1] It does this by bouncing a microwave signal off a desired target and analyzing how the object's motion has altered the frequency of the returned signal.
Continuous-wave radar (CW radar) is a type of radar system where a known stable frequency continuous wave radio energy is transmitted and then received from any reflecting objects. [1] Individual objects can be detected using the Doppler effect , which causes the received signal to have a different frequency from the transmitted signal ...
This technique can change the range the radar detects by changing the delay in transmission of pulses, the velocity the radar detects by changing the Doppler shift of the transmitted signal, or the angle to the plane by using AM techniques to transmit into the sidelobes of the radar. Electronics, radio equipment, and antenna can cause DRFM ...
Ships and planes are metal, and reflect radio waves. The radar measures the distance to the reflector by measuring the time of the round trip from emission of a pulse to reception, dividing this by two, and then multiplying by the speed of light. To be accepted, the received pulse has to lie within a period of time called the range gate. The ...
SpotterRF Compact Surveillance Radar (SpotterRF) is a new class of surveillance radar called Compact Surveillance Radar that provides range and azimuth measurements of moving objects. It tracks moving people and vehicles from 500 to 1500 meters away in a small, lightweight package. Different variants of the system range from 3 to 5 pounds.
The US's first pulse-Doppler radar, [4] the system had look-down/shoot-down capability and could track one target at a time. It became possible to use pulse-Doppler radar on aircraft after digital computers were incorporated in the design.
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.).
KALB began broadcasting on September 29, 1954, with NBC's airing of the 1954 World Series. [2] It aired an analog signal on VHF channel 5. The station has been an NBC affiliate since its inception, although it also carried programs from the classic big four networks, until DuMont folded in 1955 and cable penetration in the early 1960s provided various network affiliates from Lafayette, Baton ...