Numerical optimization in VAD inversion technique for wind lidar

REN Peng; WANG Yu-lan; KANG Da-yong; CHEN Yong; ZHOU Ding-fu; WU Bo; YANG Ze-hou; TONG Jing

doi:10.3969/j.issn.1001-3806.2009.06.030

In order to improve the speed and accuracy of inversion of the wind obtained with a Doppler wind lidar,optimized Newton-Gaussian method of least squares was used to solve the wind inversion model.Its step-size and initial value of Newton-Gaussian were discussed and adjusted so that the method became more robust,and some inherent defects of traditional methods of velocity azimuth display(VAD) inversion were overcome.The inversion of low and mid partial wind-field was achieved with the algorithm adopted in an all-fiber Doppler weather radar.The algorithm not only improves the speed and accuracy of inversion of the wind,but also makes the result of inversion more stable and suitable for real-time calculation.

Numerical optimization in VAD inversion technique for wind lidar

Corresponding author: WANG Yu-lan, wyl@cdut.edu.cn;

1. Southwest Institute of Technical Physics, Chengdu 610041, China;

2. College of Information Management, Chengdu University of Technology, Chengdu 610059, China;

3. 63891 Unit of People's Liberation Army, Luoyang 471003, China

Received Date: 2008-07-16

Accepted Date: 2008-09-09

Available Online: 2009-12-25

Abstract: In order to improve the speed and accuracy of inversion of the wind obtained with a Doppler wind lidar,optimized Newton-Gaussian method of least squares was used to solve the wind inversion model.Its step-size and initial value of Newton-Gaussian were discussed and adjusted so that the method became more robust,and some inherent defects of traditional methods of velocity azimuth display(VAD) inversion were overcome.The inversion of low and mid partial wind-field was achieved with the algorithm adopted in an all-fiber Doppler weather radar.The algorithm not only improves the speed and accuracy of inversion of the wind,but also makes the result of inversion more stable and suitable for real-time calculation.

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Reference (10)

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Numerical optimization in VAD inversion technique for wind lidar

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References

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