Differences

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--- pvm [2020/08/31 20:18] – [Doppler lidar History] bpospich
+++ pvm [2021/03/01 10:18] (current) – [Link to current observations] bpospich
@@ Line 52: / Line 52: @@
 ===== Link to current observations =====
-Current observations at [[http://gop.meteo.uni-koeln.de/~Hatpro/dataBrowser/dataBrowser4.html?site=JOYCE&date=0&UpperLeft=PVM__Polycrystalline&UpperRight=PVM__Amorph&LowerRight=PVM__Irradiance&LowerLeft=PVM__CumulativeEnergy|quicklook archive]]
+Current observations at [[http://atmos.meteo.uni-koeln.de/~hatpro/dataBrowser/dataBrowser4.html?site=JOYCE&date=0&UpperLeft=PVM__Polycrystalline&UpperRight=PVM__Amorph&LowerRight=PVM__Irradiance&LowerLeft=PVM__CumulativeEnergy|quicklook archive]]
@@ Line 58: / Line 58: @@
 ===== Measurement examples =====
-[[http://gop.meteo.uni-koeln.de/~jschween/wind_lidar/|Click here for more plots and explanations]]
-Current VAD plot:\\
-{{http://gop.meteo.uni-koeln.de/~jschween/wind_lidar/vad.png?400}}\\
-//The figure shows a velocity azimuth display (VAD): vectors give direction and speed of horizontal wind at time and height. Vectors pointing upward indicate south wind, vectors pointing to the right indicate west wind.
-Color shading gives the backscatter coefficient.
-//
+{{wiki:examples:2020-08-17_polycrystalline.png?direct&400|Poly module}}
+{{wiki:examples:2020-08-17_irradiance.png?direct&400|Irradiance}} \\
+//Example time series of PVM observations (left: Quicklook for the polycristalline module, right: Irradiance and efficiency)//
 ===== PVM History =====
 ^  Period   ^  Installation angle  ^  Place  ^  Project  ^ Installed ^
@@ Line 75: / Line 71: @@
 ===== Technical specifications =====
-^ Parameter  ^ Specification  ^ Remark  ^
+^ Parameter  ^ SolarWorld SW 235-poly  ^ First Solar - FS-380  ^
-| Wavelength / nm  | 1500nm  |  |
+| STC power  | 235 Wp   | 80 Wp   |
-| Pulse energy / $\mu$J  | ~100  | see [[http://www.arm.gov/publications/tech_reports/handbooks/dl_handbook.pdf|ARM Doppler lidar handbook]]  |
+| Current   | 7.85 A   | 1.65 A   |
-| Pulse width / ns (m)  | 150 (22.5)  | see ARM handbook  |
+| Voltage   | 30.2 V   | 48.5 V   |
-| Repetition Rates  / s  | 1/15000  | i.e. 15000 laser pulses per second (=Pulse repetition frequency PRF)  |
+| Short circuit current  | 8.35 A  | 1.88 A   |
-|                        | 1.67     | avg.beam i.e. N_avg pulses averaged and processed => dead time=0.67s  |
+| Open circuit voltage  | 37 V   | 60.8 V   |
-|                        | 300      | Doppler Beam swing (DBS) with 3 beams ([azi,ele] = [0,90],[0,75],[90,75])  |
+| System voltage  | 1000 V  | 1000 V   |
-|                        | 900      | Velocity azimuth display (VAD) with 36 beams ([azi,ele] = [i*10,75])  |
+| Dimensions   | 1675 mm x 1001 mm x 31 mm  | 1200 mm x 600 mm x 7 mm    |
-|                        | 3600     | vertical slice (RHI) with 18 beams ([azi,ele] = [109,i*10]) |
+| Weight  | 21.2 kg  | 12 kg   |
-| N_avg  | 15000  | number of pulses to be averaged in one 'beam'  |
-| resolution / m  | 30  | range resolution (adjustable from 15m onward)  |
-| 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 / ms<sup>-1</sup> | 0.0382  | adjustable  |
-| velocity precsision / ms<sup>-1</sup>  | < 0.20  | for SNR > -17dB  |
-| max velocity / ms<sup>-1</sup> | 19.2  | = Nyquist Velocity (adjustable)  |
-| Aperture / mm  (area /m<sup>2</sup>)  | 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]  |
-| Weight / kg   | 110  | with transport case  |
-| Manufacturer  | | [[http://halo-photonics.com/|Halo Photonics]]   |
-| 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   |