, a compact and robust Doppler wind lidar
is the state-of-the-art Doppler lidar for nacelle-based wind measurements. Installation in the spinner of wind turbines results in a conical scan while the rotor is turning, from which the wind vector ahead of the rotor is calculated. Main characteristics:
- Laser, signal detection and processing, industrial PC and power supply in a single box
- Wind speed up to 85 m/s at 0.1 m/s resolution
- Profiling range 60 to 550 m, depending on atmospheric visibility
- Wind data in 37 simultaneous range gates,
each of 30 m length with a 50% overlap
- Dimensions (L×W×H): 410×340×320 mm³ without rubber bearings and connectors
- Mass: approx. 17 kg without rubber bearings
- Input voltage: 24 V DC; power approx. 100 W
- Eye-safe laser operation
- Protection classification: IP65
on a stand with antenna rotor, an economic instrument for ground-based assessment of wind resource in the context of wind farm planning. The 360° rotation time is 50 seconds, typically.
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was developed at University of Oldenburg with funds from the Federal Ministry for the Environment, Nature Conservation, Building and Nuclear Safety, Berlin, Germany.
Screenshot of the Graphical User Interface, with (from top to bottom) analog detector data, spectrum from aerosol backscatter showing the Doppler peak at 250 m distance from which wind speed is derived, and colour coded wind profiles where measuring points correspond to seconds.