| Issue |
EPJ Web Conf.
Volume 362, 2026
31st International Laser Radar Conference (ILRC 31) Held Together with the 22nd Coherent Laser Radar Conference (CLRC 22)
|
|
|---|---|---|
| Article Number | 15003 | |
| Number of page(s) | 4 | |
| Section | CLRC Wind Lidar for Wind Energy, Aviation and Atmospheric Studies | |
| DOI | https://doi.org/10.1051/epjconf/202636215003 | |
| Published online | 09 April 2026 | |
https://doi.org/10.1051/epjconf/202636215003
Frequency Modulated Pulsed Coherent Wind Lidar for Short Range Measurement
DOTA, ONERA, Université Paris Saclay, F-91120 Palaiseau – France
Published online: 9 April 2026
Abstract
Measuring wind just a few meters away with coherent wind lidars (CWL) can be of great interest, e.g. for helicopter safety. However, using CWL at short distance presents significant challenges due to strong parasitic reflections on the last lidar optics, which superimpose on the signal back-reflected by the atmosphere.
In this study, we present an innovative method to mitigate this limitation that consist in using a frequency modulated pulsed coherent wind lidar (called “tweet lidar”) for short-distance measurements. This design effectively separates the signal from spurious reflections within the spectrum.
In the experimental setup, we could separate the signal focused at approximately 7 meters ahead of the optics from the spurious reflections and still obtain a clean wind speed measurement with accuracy of the order of a few dm/s.
© The Authors, published by EDP Sciences, 2026
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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