Weather Radar, basic principles

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Across
  1. 4. Sudden change in wind direction or speed
  2. 5. This motor sweeps the antenna side to side
  3. 6. Newer radars detect turbulence using this effect
  4. 9. 5 cm wavelength and a frequency of 5200MHz - 5900MHz
  5. 10. This "time control" increases the gain for distant returns to get accurate target intensity
  6. 12. Computes azimuth and elevation to keep antenna stabilized
  7. 14. There are digital and ______ systems
  8. 15. When it looks like the aircraft is flying a clear path, but when viewed at a further range is actually flying head on into a storm
  9. 16. The pulse __________ frequency is the number of pulses transmitted per second
  10. 17. Usually set to auto, adjusts sensitivity of receiver
  11. 18. Time for signal to be sent out, bounce off a system and reflect back
  12. 19. Carries RF energy from the receiver and transmitter to the antenna
Down
  1. 1. The magnetron power oscillator generates this
  2. 2. Quiescent period is also known as the
  3. 3. Weather radar reflects off this in the air
  4. 7. Where is the antenna mounted
  5. 8. Alerts the pilot of potentially dangerous weather systems in aircraft path
  6. 11. A good indication of storm strength - shows heigh of storm and clouds
  7. 13. Mode on monochromatic displays to show storm strength
  8. 20. Weather radar works on this principle