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  2. 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.

  3. 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 ...

  4. Inverse synthetic-aperture radar - Wikipedia

    en.wikipedia.org/wiki/Inverse_synthetic-aperture...

    Inverse synthetic-aperture radar ( ISAR) is a radar technique using radar imaging to generate a two-dimensional high resolution image of a target. It is analogous to conventional SAR, except that ISAR technology uses the movement of the target rather than the emitter to create the synthetic aperture. [1] ISAR radars have a significant role ...

  5. 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 ...

  6. History of tornado research - Wikipedia

    en.wikipedia.org/wiki/History_of_tornado_research

    The University of Oklahoma's RaXPol mobile Doppler weather radar, positioned at a nearby overpass, measured winds preliminarily analyzed as in excess of 296 mph (476 km/h). These winds are considered the second-highest ever measured worldwide, just shy of the 302 ± 22 mph (486 ± 35 km/h) recorded during the 1999 Bridge Creek–Moore tornado .

  7. Hurricane Katrina - Wikipedia

    en.wikipedia.org/wiki/Hurricane_Katrina

    v. t. e. Hurricane Katrina was a devastating and deadly Category 5 Atlantic hurricane that caused 1,392 fatalities and damages estimated at $186.3 billion (2022 USD) in late August 2005, particularly in the city of New Orleans and its surrounding area. [ 1 ] Katrina was the twelfth tropical cyclone, the fifth hurricane, and the third major ...

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  9. Tornado - Wikipedia

    en.wikipedia.org/wiki/Tornado

    Doppler weather radar systems can detect mesocyclones within a supercell thunderstorm. This allows meteorologists to predict tornado formations throughout thunderstorms. [108] A Doppler on Wheels radar loop of a hook echo and associated mesocyclone in Goshen County, Wyoming on June 5, 2009. Strong mesocyclones show up as adjacent areas of ...

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