Abstract
A Doppler lidar system for wind velocity and direction measurement is presented. The lidar use a wide field of view (FOV) objective lens as an optical antenna for both beam transmitting and signal receiving. By four fibers coupled on different position on the focal plane, the lidar can implement wind vector measurement without any scanning movement.
Highlights
Lidars were employed for wind sensing since early 1970s [1]
For a doppler wind lidar, only radial velocity can be measured by one beam direction, to get the real wind vector, at least three beam directions are required
We discussed a design of non-scanning all-fiber wind lidar with a wide filed view optical antenna
Summary
Lidars were employed for wind sensing since early 1970s [1]. Following advances in fiber optic communications, laser wavelengths close to 1550 nm are used extensively in all-fiber coherent doppler wind lidars (CDL), and many commercial systems are available [2,3,4]. The fiber optic technology, used in optical communications industry, is employed for the generation, amplification, transmission, and manipulation of the laser beam in all-fiber CDLs [5]. Most of wind lidars scan the laser beam to different directions to complete the vector measurement with a scanning device. We discussed a design of non-scanning all-fiber wind lidar with a wide filed view optical antenna
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