XAF radar - definição. O que é XAF radar. Significado, conceito
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  3. XAF radar

O que (quem) é XAF radar - definição


XAF radar         
The XAF was an experimental radar set constructed in 1938, which survived World War II as a historical artifact, and is now placed on exhibit at the Historical Electronics Museum, located in Linthicum, Maryland
https://en.wikipedia.org/wiki/XAF_radar
radar         
  • 3D Doppler radar spectrum showing a [[Barker code]] of 13
  • A [[Chain Home]] tower in Great Baddow, Essex, United Kingdom
  • Change of [[wavelength]] caused by motion of the source
  • Experimental radar antenna, US [[Naval Research Laboratory]], Anacostia, D. C., from the late 1930s (photo taken in 1945)
  • AS-3263/SPS-49(V) antenna (US Navy)
  • echoes]] from a target cause ghosts to appear.
  • [[Phased array]]: Not all radar antennas must rotate to scan the sky.
  • Pulse-Doppler signal processing. The ''Range Sample'' axis represents individual samples taken in between each transmit pulse. The ''Range Interval'' axis represents each successive transmit pulse interval during which samples are taken. The Fast Fourier Transform process converts time-domain samples into frequency domain spectra. This is sometimes called the ''bed of nails''.
  • Echo heights above ground<br /><math>H=\left (\sqrt{r^{2}+(k_{e}a_{e})^{2}+2rk_{e}a_{e}sin(\theta _{e})} \right )-k_{e}a_{e}+h_{a}</math> <br />Where : <br />&nbsp;&nbsp;r : distance radar-target <br />ke : 4/3 <br />ae : Earth radius <br />θe : elevation angle above the radar horizon <br />ha : height of the feedhorn above ground
  • Slotted waveguide antenna
  • Radar components
  • Pulse radar: The round-trip time for the radar pulse to get to the target and return is measured. The distance is proportional to this time.
  • Commercial marine radar antenna. The rotating antenna radiates a vertical fan-shaped beam.
  • Surveillance radar antenna
  • Continuous wave (CW) radar. Using frequency modulation allows range to be extracted.
  • The first workable unit built by [[Robert Watson-Watt]] and his team
  • Memorial plaque commemorating Robert Watson-Watt and [[Arnold Wilkins]]
OBJECT DETECTION SYSTEM BASED ON RADIO WAVES
Radio detection and ranging; Airport radar; Radars; RADAR; Radio detecting and ranging; Radar illumination; Radio Detection and Ranging; Radar Homing and Warning; Radar station; Coherent processing interval; Radar system; Microwave radar; Fill pulse; Radar equation; Centimetric radar; Coherent Processing Interval; Radar distance measurement; Radar communication; Air search radar; Radar systems; Remote Radar Head; Applications of radar; Palmer Scan; Radar signal processing; Derax; Radar antenna design
n. early-warning radar
radar         
  • 3D Doppler radar spectrum showing a [[Barker code]] of 13
  • A [[Chain Home]] tower in Great Baddow, Essex, United Kingdom
  • Change of [[wavelength]] caused by motion of the source
  • Experimental radar antenna, US [[Naval Research Laboratory]], Anacostia, D. C., from the late 1930s (photo taken in 1945)
  • AS-3263/SPS-49(V) antenna (US Navy)
  • echoes]] from a target cause ghosts to appear.
  • [[Phased array]]: Not all radar antennas must rotate to scan the sky.
  • Pulse-Doppler signal processing. The ''Range Sample'' axis represents individual samples taken in between each transmit pulse. The ''Range Interval'' axis represents each successive transmit pulse interval during which samples are taken. The Fast Fourier Transform process converts time-domain samples into frequency domain spectra. This is sometimes called the ''bed of nails''.
  • Echo heights above ground<br /><math>H=\left (\sqrt{r^{2}+(k_{e}a_{e})^{2}+2rk_{e}a_{e}sin(\theta _{e})} \right )-k_{e}a_{e}+h_{a}</math> <br />Where : <br />&nbsp;&nbsp;r : distance radar-target <br />ke : 4/3 <br />ae : Earth radius <br />θe : elevation angle above the radar horizon <br />ha : height of the feedhorn above ground
  • Slotted waveguide antenna
  • Radar components
  • Pulse radar: The round-trip time for the radar pulse to get to the target and return is measured. The distance is proportional to this time.
  • Commercial marine radar antenna. The rotating antenna radiates a vertical fan-shaped beam.
  • Surveillance radar antenna
  • Continuous wave (CW) radar. Using frequency modulation allows range to be extracted.
  • The first workable unit built by [[Robert Watson-Watt]] and his team
  • Memorial plaque commemorating Robert Watson-Watt and [[Arnold Wilkins]]
OBJECT DETECTION SYSTEM BASED ON RADIO WAVES
Radio detection and ranging; Airport radar; Radars; RADAR; Radio detecting and ranging; Radar illumination; Radio Detection and Ranging; Radar Homing and Warning; Radar station; Coherent processing interval; Radar system; Microwave radar; Fill pulse; Radar equation; Centimetric radar; Coherent Processing Interval; Radar distance measurement; Radar communication; Air search radar; Radar systems; Remote Radar Head; Applications of radar; Palmer Scan; Radar signal processing; Derax; Radar antenna design
¦ noun a system for detecting the presence, direction, and speed of aircraft, ships, etc., by sending out pulses of radio waves which are reflected off the object back to the source.
Origin
1940s: from ra(dio) d(etection) a(nd) r(anging).
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