Doppler LIDAR Streamline | Streamline AllSky XR+
The pulsed “Streamline” Doppler Lidar systems from the manufacturer Halo Photonics by Lumibird are operated at an eye-safe wavelength (1.5 µm, laser protection class 1M) and provide profiles of the backscatter intensity of aerosols and clouds, the Doppler wind components and derived profiles of the horizontal wind speed and wind direction. The systems are characterized by their compact design and low weight. They are very easy to set up and offer a comfortable user interface. The scanner unit allows complex scan patterns in the upper hemisphere (AllSky), or within a cone angle of 19° (Profiler VS). Metek complements these systems with in-house developed routines for calculating the vertical wind profiles, for building up to three virtual wind masts and for displaying the output data using the proven Metek Graphics software.
Details
- AllSky scanner pulsed Doppler LIDAR system
- Doubled signal power compared to Streamline XR
- Robust scanning unit with arbitrary steering capability for full upper hemisphere
- Profiling up to 7.5, 10 or 12 km nominal range (for clouds)
- Up to 1000 range gates, max. observed range from 6000 m up to 10.000 m (favorable conditions)
- Eye safe 1.5 µm (Class 1M) Doppler laser system
- Analyzing range ±19 m/s @ 50 MHz sample rate, ±38 m/s @ 100 MHz sample rate
- Time resolution ≥ 1 s for averaged data, 8.5 Hz max. output rate
- Range resolution ≥ 18 m increment 6 m / 3 m for 50 MHz / 100MHz
- Optional pulse width selection (80, 160, 320 ns)
- Wide operational temperature range -20 … 45 °C
- Profiles of back scattered intensity, radial wind components, spectral width
- Derivation of profiles of wind speed and wind direction for arbitrary VAD scans
- Indication of mixing height by aerosol density profile
- Easy set up, flexible parameter setting, autonomous operation
- Remote access and control via internet
- Offline data analyzing tools (Metek post-processor for vertical wind profile derivation)
- Data conversion to Metek Graphics format
- Routines for remote wind profiling at virtual masts
- Extra power supply unit including overvoltage protection of power lines and LAN