CW Direct Detection Lidar with a Large Dynamic Range of Wind Speed Sensing in a Remote and Spatially Confined Volume
A novel continuous-wave (CW) direct detection lidar (DDL) is demonstrated to be capable of wind speed measurement 40 m away with an update rate of 4 Hz using a fiber-based scanning Fabry–Perot interferometer as an optical frequency discriminator. The proposed CW DDL has a large dynamic wind speed ra...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-09-01
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| Series: | Remote Sensing |
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| Online Access: | https://www.mdpi.com/2072-4292/13/18/3716 |
| _version_ | 1797517366754541568 |
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| author | Lichun Meng Christian Pedersen Peter John Rodrigo |
| author_facet | Lichun Meng Christian Pedersen Peter John Rodrigo |
| author_sort | Lichun Meng |
| collection | DOAJ |
| description | A novel continuous-wave (CW) direct detection lidar (DDL) is demonstrated to be capable of wind speed measurement 40 m away with an update rate of 4 Hz using a fiber-based scanning Fabry–Perot interferometer as an optical frequency discriminator. The proposed CW DDL has a large dynamic wind speed range with no sign ambiguity and its sensitivity is assessed by comparing its performance with that of a CW coherent detection lidar (CDL) in a side-by-side wind measurement. A theoretical model of the spatial weighting function of the fiber-based CW DDL is also presented and validated experimentally. This work shows that the CW DDL has a spatially confined measurement volume with a Lorentzian axial profile similar to that of a CW CDL. The proposed DDL has potential use in various applications in which requirements such as high-speed wind sensing and directional discrimination are not met by state-of-the-art Doppler wind lidar systems. |
| first_indexed | 2024-03-10T07:15:41Z |
| format | Article |
| id | doaj.art-aa3d66d3326343d29a1304941b68bc78 |
| institution | Directory Open Access Journal |
| issn | 2072-4292 |
| language | English |
| last_indexed | 2024-03-10T07:15:41Z |
| publishDate | 2021-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Remote Sensing |
| spelling | doaj.art-aa3d66d3326343d29a1304941b68bc782023-11-22T15:07:15ZengMDPI AGRemote Sensing2072-42922021-09-011318371610.3390/rs13183716CW Direct Detection Lidar with a Large Dynamic Range of Wind Speed Sensing in a Remote and Spatially Confined VolumeLichun Meng0Christian Pedersen1Peter John Rodrigo2Windar Photonics A/S, Helgeshøj Alle 16, 2630 Taastrup, DenmarkDTU Fotonik, Department of Photonics Engineering, Technical University of Denmark, Frederiksborgvej 399, 4000 Roskilde, DenmarkDTU Fotonik, Department of Photonics Engineering, Technical University of Denmark, Frederiksborgvej 399, 4000 Roskilde, DenmarkA novel continuous-wave (CW) direct detection lidar (DDL) is demonstrated to be capable of wind speed measurement 40 m away with an update rate of 4 Hz using a fiber-based scanning Fabry–Perot interferometer as an optical frequency discriminator. The proposed CW DDL has a large dynamic wind speed range with no sign ambiguity and its sensitivity is assessed by comparing its performance with that of a CW coherent detection lidar (CDL) in a side-by-side wind measurement. A theoretical model of the spatial weighting function of the fiber-based CW DDL is also presented and validated experimentally. This work shows that the CW DDL has a spatially confined measurement volume with a Lorentzian axial profile similar to that of a CW CDL. The proposed DDL has potential use in various applications in which requirements such as high-speed wind sensing and directional discrimination are not met by state-of-the-art Doppler wind lidar systems.https://www.mdpi.com/2072-4292/13/18/3716Doppler wind lidardirect detection lidarscanning Fabry–Perot interferometerwind sensingspatial weighting functioncontinuous-wave lidar |
| spellingShingle | Lichun Meng Christian Pedersen Peter John Rodrigo CW Direct Detection Lidar with a Large Dynamic Range of Wind Speed Sensing in a Remote and Spatially Confined Volume Remote Sensing Doppler wind lidar direct detection lidar scanning Fabry–Perot interferometer wind sensing spatial weighting function continuous-wave lidar |
| title | CW Direct Detection Lidar with a Large Dynamic Range of Wind Speed Sensing in a Remote and Spatially Confined Volume |
| title_full | CW Direct Detection Lidar with a Large Dynamic Range of Wind Speed Sensing in a Remote and Spatially Confined Volume |
| title_fullStr | CW Direct Detection Lidar with a Large Dynamic Range of Wind Speed Sensing in a Remote and Spatially Confined Volume |
| title_full_unstemmed | CW Direct Detection Lidar with a Large Dynamic Range of Wind Speed Sensing in a Remote and Spatially Confined Volume |
| title_short | CW Direct Detection Lidar with a Large Dynamic Range of Wind Speed Sensing in a Remote and Spatially Confined Volume |
| title_sort | cw direct detection lidar with a large dynamic range of wind speed sensing in a remote and spatially confined volume |
| topic | Doppler wind lidar direct detection lidar scanning Fabry–Perot interferometer wind sensing spatial weighting function continuous-wave lidar |
| url | https://www.mdpi.com/2072-4292/13/18/3716 |
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