Research on impact of range resolutions on wind detection performance using virtual lidar

Area of Science:

• Atmospheric Science
• Remote Sensing Technology
• Wind Energy Meteorology

Background:

• Wind lidar systems are crucial for atmospheric measurements.
• Range resolution significantly impacts wind lidar accuracy.
• Virtual lidar is used to simulate and evaluate lidar performance.

Purpose of the Study:

• Quantitatively evaluate the impact of range resolution on wind lidar accuracy.
• Compare three virtual lidar generation methods.
• Develop a method to select optimal virtual lidar generation techniques.

Main Methods:

• Comparative analysis of direct averaging, energy weighting, and time-domain analysis virtual lidar methods.
• Error assessment between retrieved wind and reference wind.
• Development and application of a dimensionless parameter for range resolution and wind field scale decoupling.

Main Results:

• Insufficient range resolution leads to underestimation and misalignment of wind speed extremes.
• Differences observed in retrieval results among the three virtual lidar methods.
• Established fitting relationships between the dimensionless parameter and error metrics.

Conclusions:

• Range resolution is a critical factor affecting wind lidar accuracy.
• The proposed dimensionless parameter aids in selecting optimal virtual lidar methods for specific scenarios.
• Findings are vital for evaluating coherent Doppler and direct detection wind lidar performance.