Bistatic Doppler wind lidar study for wind field measurement over complex terrain

Area of Science:

• Atmospheric science
• Remote sensing technology
• Meteorological instrumentation

Background:

• Accurate atmospheric wind measurement over complex terrain is crucial but challenging for single wind lidar systems due to limitations in detecting horizontally inhomogeneous wind fields.
• Existing methods struggle with the complexities introduced by varied topography, necessitating advanced solutions for reliable wind data acquisition.

Purpose of the Study:

• To develop and evaluate a bistatic Doppler wind lidar system for precise wind field detection in complex terrain.
• To determine the optimal configuration for a bistatic lidar system to maximize detection accuracy.

Main Methods:

• Analyzed synthetic wind field uncertainties to identify the optimal isosceles triangle layout for the bistatic lidar system.
• Estimated system detection accuracy using Nanjing sounding data from 2015 and two typical wind field models.

Main Results:

• The bistatic Doppler wind lidar system demonstrates high accuracy in detecting wind fields over complex terrain.
• Achieved wind errors below 1 m/s for altitudes below 4 km.
• Recorded relative errors of less than 5%.

Conclusions:

• The bistatic Doppler wind lidar system is a viable and accurate solution for atmospheric wind measurement in complex terrain.
• The optimized isosceles triangle configuration enhances the system's capability to capture inhomogeneous wind fields.
• The system's performance validates its potential for meteorological applications in challenging environments.