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  2. Radar - Wikipedia

    en.wikipedia.org/wiki/Radar

    Named X band because the frequency was a secret during WW2. Diffraction off raindrops during heavy rain limits the range in the detection role and makes this suitable only for short-range roles or those that deliberately detect rain. K u: 12–18 GHz: 1.67–2.5 cm: High-resolution, also used for satellite transponders, frequency under K band ...

  3. AN/TPY-2 transportable radar - Wikipedia

    en.wikipedia.org/wiki/AN/TPY-2_transportable_radar

    AN/TPY-2 transportable radar. The AN/TPY-2 Surveillance Transportable Radar, also called the Forward Based X-Band Transportable (FBX-T) is a long-range, very high-altitude active digital antenna array [1][2] X band surveillance radar designed to add a tier to existing missile and air defence systems. It has a range of 2,900 mi (2,500 nmi; 4,700 ...

  4. Radio spectrum - Wikipedia

    en.wikipedia.org/wiki/Radio_spectrum

    Frequency bands in the microwave range are designated by letters. This convention began around World War II with military designations for frequencies used in radar, which was the first application of microwaves. There are several incompatible naming systems for microwave bands, and even within a given system the exact frequency range ...

  5. List of radar types - Wikipedia

    en.wikipedia.org/wiki/List_of_radar_types

    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.

  6. Radar signal characteristics - Wikipedia

    en.wikipedia.org/wiki/Radar_signal_characteristics

    The pulse width ( ) (or pulse duration) of the transmitted signal is the time, typically in microseconds, each pulse lasts. If the pulse is not a perfect square wave, the time is typically measured between the 50% power levels of the rising and falling edges of the pulse. The pulse width must be long enough to ensure that the radar emits ...

  7. SNR-75 - Wikipedia

    en.wikipedia.org/wiki/SNR-75

    60-120 km (E/F band); 75-145 km (G band) [1] Power. 600 kW (E/F band); 1.0 MW (G band) [1] The SNR-75 (also referred to by the NATO reporting name Fan Song) is a series of trailer-mounted E band / F band and G band fire control and tracking radars for use with the Soviet SA-2 Guideline surface-to-air missile system.

  8. Radar in World War II - Wikipedia

    en.wikipedia.org/wiki/Radar_in_World_War_II

    Centimetric radar enables the detection of much smaller objects and the use of much smaller antennas than the earlier, lower frequency radars. A radar with a wavelength of 2 meters (VHF band, 150 MHz) cannot detect objects that are much smaller than 2 meters and requires an antenna whose size is on the order of 2 meters (an awkward size for use ...

  9. E band (NATO) - Wikipedia

    en.wikipedia.org/wiki/E_band_(NATO)

    The NATO E band is a designation given to the radio frequencies from 2000 to 3000 MHz (equivalent to wavelengths between 15 and 10 cm) during the cold war period. Since 1992, detailed frequency allocations, allotment and assignments are in line with the NATO Joint Civil/Military Frequency Agreement (NJFA). [1]