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  2. Continuous-wave radar - Wikipedia

    en.wikipedia.org/wiki/Continuous-wave_radar

    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 ...

  3. Ten-code - Wikipedia

    en.wikipedia.org/wiki/Ten-code

    Ten-code. Ten-codes, officially known as ten signals, are brevity codes used to represent common phrases in voice communication, particularly by US public safety officials and in citizens band (CB) radio transmissions. The police version of ten-codes is officially known as the APCO Project 14 Aural Brevity Code.[ 1]

  4. List of New England hurricanes - Wikipedia

    en.wikipedia.org/wiki/List_of_New_England_hurricanes

    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.

  5. Synthetic-aperture radar - Wikipedia

    en.wikipedia.org/wiki/Synthetic-aperture_radar

    A synthetic-aperture radar is an imaging radar mounted on a moving platform. [10] Electromagnetic waves are transmitted sequentially, the echoes are collected and the system electronics digitizes and stores the data for subsequent processing. As transmission and reception occur at different times, they map to different small positions.

  6. 2013 Moore tornado - Wikipedia

    en.wikipedia.org/wiki/2013_Moore_tornado

    An NWS preliminary comparison of the tracks of the 2013 Moore tornado (red), the 1999 Bridge Creek–Moore tornado (green), and the 2003 Moore–Choctaw tornado (blue). On May 20, 2013, a prominent central upper trough moved eastward toward the Central United States, with a lead upper low pivoting over the Dakotas and Upper Midwest region.

  7. Hurricane Katrina - Wikipedia

    en.wikipedia.org/wiki/Hurricane_Katrina

    The storm weakened over land, but it regained hurricane status about one hour after entering the Gulf of Mexico, and it continued strengthening over open waters. On August 27, the storm reached Category 3 intensity on the Saffir-Simpson hurricane wind scale, becoming the third major hurricane of the season.

  8. Radar astronomy - Wikipedia

    en.wikipedia.org/wiki/Radar_astronomy

    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 ...

  9. NBC - Wikipedia

    en.wikipedia.org/wiki/NBC

    NBC also operated NBC Super Sports, a 24-hour channel devoted to televising sporting events. In July 1998, NBC Asia was replaced by a regional version of the National Geographic Channel . As is the case with NBC Europe, CNBC Asia broadcasts select episodes of The Tonight Show and Late Night as well as Meet the Press as part of its weekend ...

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