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instruments:wind_lidar [2014/11/26 16:43] – [Data] janinstruments:wind_lidar [2021/10/01 19:32] (current) – [Doppler Lidar] jan
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-====== Wind Lidar ====== +====== Doppler Lidar ======
-//Mentor: [[http://www.geomet.uni-koeln.de/en/general/the-institute/staff/detailed-view/f7645b9eab9e9ee2111e298aff82f29f/?tx_wtdirectory_pi1[show]=52&tx_rggooglemap_pi1[poi]=52|J.H. Schween]]//+
  
 +//Mentor: [[http://www.geomet.uni-koeln.de/das-institut/mitarbeiter/schween/|J.H. Schween]]//
  
 +The instrument is a [[https://halo-photonics.com/lidar-systems/stream-line-series/|Streamline XR]] from [[https://halo-photonics.com | HALO Photonics ]] (Worcestershire, Great Britain) instrument nr.17 build in 2010.
 ===== Principle ===== ===== Principle =====
  
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 ===== Data ===== ===== Data =====
  
-  * If you are interested in receiving data please contact the instrument mentor [[http://www.geomet.uni-koeln.de/en/general/the-institute/staff/detailed-view/f7645b9eab9e9ee2111e298aff82f29f/?tx_wtdirectory_pi1[show]=52&tx_rggooglemap_pi1[poi]=52 | J.H. Schween]].+  * If you are interested in receiving data please contact the instrument mentor [[http://www.geomet.uni-koeln.de/en/the-institute/rg-crewell/staff-crewell/schween/ | J.H. Schween]].
  
-  * Recent plots can be found in the [[http://gop.meteo.uni-koeln.de/~hatpro/dataBrowser/dataBrowser1.html?site=JOYCE&date=-1&UpperLeft=Windlidar_Overview|Quicklook archive]]+  * Recent plots can be found in the [[http://atmos.meteo.uni-koeln.de/~hatpro/dataBrowser/dataBrowser1.html?site=JOYCE&date=-1&UpperLeft=Windlidar_Overview|Quicklook archive]]
  
 Current VAD plot:\\ Current VAD plot:\\
-[[http://gop.meteo.uni-koeln.de/~jschween/wind_lidar/|{{http://gop.meteo.uni-koeln.de/~jschween/wind_lidar/vad.png?400|click for more plots}}]]\\+[[http://atmos.meteo.uni-koeln.de/~jschween/wind_lidar/|{{http://atmos.meteo.uni-koeln.de/~jschween/wind_lidar/vad.png?400|click for more plots}}]]\\
  
  
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 ^  Period  ^  Place  ^  Project  ^ ^  Period  ^  Place  ^  Project  ^
 | 12.9.2012 -   today   | [[http://www.fz-juelich.de/|Research Center Jülich]], Germany | [[http://www.tr32.de|TR32]] | | 12.9.2012 -   today   | [[http://www.fz-juelich.de/|Research Center Jülich]], Germany | [[http://www.tr32.de|TR32]] |
-| 26.7.2012 - 31.8.2012 | [[https://maps.google.de/maps?q=50.91275522340144N+6.30132085102542E|Engelsdorf]], Germany | [[http://www.tr32.de|TR32]]-[[internal:experiments:patvap:Patvap]] | +| 26.7.2012 - 31.8.2012 | [[https://maps.google.de/maps?q=50.91275522340144N+6.30132085102542E|Engelsdorf]], Germany | [[http://www.tr32.de|TR32]]-[[internal:experiments:patvap]] | 
-| 7.11.2009 - 26.7.2012 | [[http://www.fz-juelich.de/|Research Center Jülich]], Germany | [[http://www.tr32.de|TR32]] |+| 7.11.2011 - 26.7.2012 | [[http://www.fz-juelich.de/|Research Center Jülich]], Germany | [[http://www.tr32.de|TR32]] |
  
  
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 ^ Parameter  ^ Specification  ^ Remark  ^ ^ Parameter  ^ Specification  ^ Remark  ^
 | Wavelength / nm  | 1500nm  |  | | Wavelength / nm  | 1500nm  |  |
-| Repetition Rates  / s  | 1/15000  | laser pulses  | +| Pulse energy / $\mu$J  | ~100  | see [[http://www.arm.gov/publications/tech_reports/handbooks/dl_handbook.pdf|ARM Doppler lidar handbook]]  | 
-|                        | 1.67     | avg.beam i.e. N_avg pulses averaged  |+| Pulse width / ns (m)  | 150 (22.5)  | see ARM handbook  | 
 +| Repetition Rates  / s  | 1/15000  | i.e. 15000 laser pulses per second (=Pulse repetition frequency PRF)  | 
 +|                        | 1.67     | avg.beam i.e. N_avg pulses averaged and processed => dead time=0.67s  |
 |                        | 300      | Doppler Beam swing (DBS) with 3 beams ([azi,ele] = [0,90],[0,75],[90,75])  | |                        | 300      | Doppler Beam swing (DBS) with 3 beams ([azi,ele] = [0,90],[0,75],[90,75])  |
 |                        | 900      | Velocity azimuth display (VAD) with 36 beams ([azi,ele] = [i*10,75])  | |                        | 900      | Velocity azimuth display (VAD) with 36 beams ([azi,ele] = [i*10,75])  |
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 | resolution / m  | 30  | range resolution (adjustable from 15m onward)  | | resolution / m  | 30  | range resolution (adjustable from 15m onward)  |
 | Field-of-View / deg  | 360 x 90  | free alingment of the beam  | | Field-of-View / deg  | 360 x 90  | free alingment of the beam  |
-| maximum range / m | 9000  | adjustable, but restriced to sufficent backscatter (aerosol, cloud droplets or ice chrystals)  | +| maximum range / m | 9000  | adjustable, but restriced to sufficent backscatter (aerosol, cloud droplets or ice crystals)  | 
-| velocity resolution / m/s | 0.0382  | adjustable  | +| velocity resolution / ms$^{-1}$ | 0.0382  | adjustable  | 
-| max velocity / m/s | 19.2  | adjustable  | +| velocity precsision / ms$^{-1}$  | < 0.20  | for SNR > -17dB  | 
-| Size / cm³  | ~ 150 x 60 x 70  | estimated   |+| max velocity / ms$^{-1}$ | 19.2  | = Nyquist Velocity (adjustable)  | 
 +| Aperture / mm  (area /m$^2$)  | 75 (4.417e-3)  | see ARM handbook  | 
 +| Size / cm³  | 80 x 53 x 40  |   |
 | Average Power consumption / W  | 140/250 [600]  | (wo/w Heating/cooling) [The power supply shall provide 600W]  | | Average Power consumption / W  | 140/250 [600]  | (wo/w Heating/cooling) [The power supply shall provide 600W]  |
 | Weight / kg   | 110  | with transport case  | | Weight / kg   | 110  | with transport case  |
 | Manufacturer  | | [[http://halo-photonics.com/|Halo Photonics]]   | | Manufacturer  | | [[http://halo-photonics.com/|Halo Photonics]]   |
-| Instrument  | | [[http://halo-photonics.com/Halo%20Photonics%20Stream%20Line%20LiDAR%20system.htm|streamline V4]] Instrument #17  |+| Year          | 2011 | | 
 +| Instrument  | | [[http://halo-photonics.com/Halo%20Photonics%20Stream%20Line%20LiDAR%20system.htm|streamline ]] Instrument #17, XR version in 2010, 15kHz PRF, 10km max range   |
  
  
  
  
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