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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 ...
As the center of the storm moved out to sea, a batch of moisture broke off it, and moved north, bringing moderate rain to New England. The storm caused millions of dollars in damage. September 4, 2010 – Hurricane Earl passed about 90 miles offshore, but still brought heavy rain, large waves, and tropical storm force gusts to Cape Cod.
The Weather Channel was founded on July 18, 1980, [9] by television meteorologist John Coleman (who had served as a chief meteorologist at ABC owned-and-operated station WLS-TV in Chicago and as a forecaster for Good Morning America) and Frank Batten, then-president of the channel's original owner Landmark Communications (now Landmark Media Enterprises).
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.). Modern weather radars are mostly pulse-Doppler radars, capable of detecting the motion of rain droplets in addition to the intensity of the ...
On May 6, 1969, Loop 9 was designated from I-20 north, east, south, west, and northwest back to I-20. On October 21, 1977, Loop 9 was cancelled and portions became SH 161 and SH 190 the same day. The Loop 9 designation was restored on June 29, 2017, to an unbuilt highway from I-35E to I-45.
Synthetic-aperture radar ( SAR) is a form of radar that is used to create two-dimensional images or three-dimensional reconstructions of objects, such as landscapes. [ 1] SAR uses the motion of the radar antenna over a target region to provide finer spatial resolution than conventional stationary beam-scanning radars.
Radar astronomy. Radar astronomy is a technique of observing nearby astronomical objects by reflecting radio waves or microwaves off target objects and analyzing their reflections. Radar astronomy differs from radio astronomy in that the latter is a passive observation (i.e., receiving only) and the former an active one (transmitting and ...
Hurricane Carla was the most intense tropical cyclone landfall in Texas in the 20th century. [ 1] The third named storm of the 1961 Atlantic hurricane season, Carla developed from an area of squally weather in the southwestern Caribbean Sea on September 3. [ 1] As a tropical depression, it strengthened while heading northwest.