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--- instruments:wind_lidar [2018/02/03 14:35] – [History] jan
+++ instruments:wind_lidar [2021/10/01 19:32] (current) – [Doppler Lidar] jan
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 //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 =====
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   * 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:\\
-[[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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 | 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]] |
-| 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  ^
 | Wavelength / nm  | 1500nm  |  |
-| Pulse energy / $\mu$J  | ~100  | see ARM handbook  |
+| Pulse energy / $\mu$J  | ~100  | see [[http://www.arm.gov/publications/tech_reports/handbooks/dl_handbook.pdf|ARM Doppler lidar handbook]]  |
 | Pulse width / ns (m)  | 150 (22.5)  | see ARM handbook  |
-| Repetition Rates  / s  | 1/15000  | i.e. 15000 laser pulses per second  |
+| 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])  |
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 | 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 crystals)  |
-| velocity resolution / m/s | 0.0382  | adjustable  |
+| velocity resolution / ms$^{-1}$ | 0.0382  | adjustable  |
-| velocity precsision / ms$^{-1}$  | < 0.20  | for SNR < -17dB  |
+| velocity precsision / ms$^{-1}$  | < 0.20  | for SNR > -17dB  |
-| max velocity / m/s | 19.2  | = Nyquist Velocity (adjustable)  |
+| 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  |   |
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 | Weight / kg   | 110  | with transport case  |
 | 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   |