1 / 24

Wind lidar evaluation at the Danish wind test site in H vs re

2. Lidar remote sensing of wind speed. Detects laser light scattered from natural particles in the atmosphere (dust, pollen, water droplets)Measures line-of-sight component of wind speed via the Doppler shiftTechnique first demonstrated in 1970s. 3. Lidar measurement of aircraft wake vortices. 4.

moe
Download Presentation

Wind lidar evaluation at the Danish wind test site in H vs re

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

    1. Wind lidar evaluation at the Danish wind test site in Høvsøre Title slide with image A Title slide must be used in all QinetiQ presentations. Try to make the Title of your presentation engaging. Keep the presentation Title brief using a maximum of 2 lines. When using a 2 line presentation Title, reduce the font size by 10 points to 44 points. All titles should have the first letter uppercase (capital) and the rest in lowercase. The only font that should be used in the presentation is TheSans Q5 Plain. All text should be left aligned, other than titles in diagrams and tables. A web reference can be added to this slide. If you are doing a dual branded presentation, insert the logo of the other company in the box provided. Title page image An interesting image that is appropriate to your presentation should be added to this slide as shown. When choosing your image make sure you select one that suits landscape and when cropped does not loose its meaning. Use the Crop tool from the picture toolbar to Crop you image to fit. Title slide with image A Title slide must be used in all QinetiQ presentations. Try to make the Title of your presentation engaging. Keep the presentation Title brief using a maximum of 2 lines. When using a 2 line presentation Title, reduce the font size by 10 points to 44 points. All titles should have the first letter uppercase (capital) and the rest in lowercase. The only font that should be used in the presentation is TheSans Q5 Plain. All text should be left aligned, other than titles in diagrams and tables. A web reference can be added to this slide. If you are doing a dual branded presentation, insert the logo of the other company in the box provided. Title page image An interesting image that is appropriate to your presentation should be added to this slide as shown. When choosing your image make sure you select one that suits landscape and when cropped does not loose its meaning. Use the Crop tool from the picture toolbar to Crop you image to fit.

    2. 2 Lidar remote sensing of wind speed Detects laser light scattered from natural particles in the atmosphere (dust, pollen, water droplets) Measures line-of-sight component of wind speed via the Doppler shift Technique first demonstrated in 1970s

    3. 3 Lidar measurement of aircraft wake vortices

    4. 4

    5. 5 ZephIR Doppler lidar wind profiler

    6. 6 ZephIR lidar on 2.3 MW wind turbine (March 2003)

    7. 7 Wind speed 200m in front of turbine

    8. 8

    9. 9 Data display screen

    10. 10 First data from scanning ZephIR (December 2003)

    11. 11

    12. 12 Tests in Høvsøre against mast-mounted cups (April - August 2004)

    13. 13 Høvsøre July 2004

    14. 14 Høvsøre August 2004 height 40m

    15. 15 Høvsøre August 2004 height 60m

    16. 16 Høvsøre August 2004 height 80m

    17. 17 Høvsøre August 2004 height 100m

    18. 18 Complex wind structure

    19. 19 Ongoing work Turbulence studies Two-lidar side-by-side comparison System development: improved performance Algorithms to mitigate difficult conditions Continuing test campaigns Rear-looking turbine-mounted lidar for wake studies “SeaZephIR”: buoy-mounted lidar (in collaboration with Trinity House)

    20. 20 Contents slides Set out the contents of your presentation so the audience will know what to expect and how long your presentation will last. Keep your content items short. Content topic numbers must be typed (as PowerPoint does not number automatically), then coloured in Bright Blue. To add second level bullet points to this slide: Use the Demote button to indent to the second level; Click on the Bullets button to add second level bullet point style. The relevant content topic is taken from this slide and re-entered on the Section divider slide and all slides within each section. The only font that should be used in the presentation is TheSans Q5 Plain. You may embolden text or use italics to add emphasis. Do not underline, emboss or add shadows to text. Animation A Wipe Right, Dissolve or Appear animation effect can be used, grouped by first level paragraphs, if you would like to introduce them individually. A dissolve effect has been set on the contents topics as an example. No slide transition effects (animation moving between slides) should be used on any slide. Do not use sound effects on any slide. Contents slides Set out the contents of your presentation so the audience will know what to expect and how long your presentation will last. Keep your content items short. Content topic numbers must be typed (as PowerPoint does not number automatically), then coloured in Bright Blue. To add second level bullet points to this slide: Use the Demote button to indent to the second level; Click on the Bullets button to add second level bullet point style. The relevant content topic is taken from this slide and re-entered on the Section divider slide and all slides within each section. The only font that should be used in the presentation is TheSans Q5 Plain. You may embolden text or use italics to add emphasis. Do not underline, emboss or add shadows to text. Animation A Wipe Right, Dissolve or Appear animation effect can be used, grouped by first level paragraphs, if you would like to introduce them individually. A dissolve effect has been set on the contents topics as an example. No slide transition effects (animation moving between slides) should be used on any slide. Do not use sound effects on any slide.

    21. To create a new presentation: Decide on the style that best suites your presentation, Blue background for on-screen and 35 mm slides or White background for OHP transparencies and printed documents. Open the Work template in the colour you decided on (Blue_Work or White_Work). This file contains the basic structure slides with which to start building your presentation. Save your file. Open the Slides template in the same colour style (Blue_Slides or White_Slides). This template contains an overview of all the slides types available. Select the slide types you require and Copy them. Go to Slide Sorter View of your new presentation (the Work template), and Paste the slides into position. Whilst building your presentation you can add slides as required using this method. Placeholder slide To be used at the beginning and end of presentations or during breaks. This slide remains on screen while the audience is settling and the speaker is being introduced.To create a new presentation: Decide on the style that best suites your presentation, Blue background for on-screen and 35 mm slides or White background for OHP transparencies and printed documents. Open the Work template in the colour you decided on (Blue_Work or White_Work). This file contains the basic structure slides with which to start building your presentation. Save your file. Open the Slides template in the same colour style (Blue_Slides or White_Slides). This template contains an overview of all the slides types available. Select the slide types you require and Copy them. Go to Slide Sorter View of your new presentation (the Work template), and Paste the slides into position. Whilst building your presentation you can add slides as required using this method. Placeholder slide To be used at the beginning and end of presentations or during breaks. This slide remains on screen while the audience is settling and the speaker is being introduced.

    22. 22 Lidar references The role of laser coherence length in CW coherent lidar, M Harris, G N Pearson, J M Vaughan, D Letalick & C Karlsson, J. Mod. Opt. 45 1567 (1998) All-fibre multifunction continuous-wave 1.55 micron coherent laser radar for range, speed, vibration and wind measurements, C Karlsson, F Olsson, D Letalick & M Harris, Applied Optics 39 3716-3726 (2000) Single-particle laser Doppler anemometry at 1.55 micron, M Harris, G N Pearson, K D Ridley, C Karlsson, F Olsson & D Letalick, Applied Optics 40 969-973 (2001) Continuous-wave bistatic laser Doppler wind sensor, M Harris, G Constant & C Ward, Applied Optics 40 1501-1506 (2001) Wake vortex detection and monitoring, M Harris, R I Young, F Köpp, A Dolfi & J-P Cariou, Aerospace Science and Technology 6 325-331 (2002)

    23. 23 Gust observations (nacelle-mounted lidar)

    24. 24 Spectrum during moderate snow

    25. 25 Comparison of Lidar with Sodar Higher signal to noise permits rapid/frequent lidar measurements Sodar can measure to greater height than current ZephIR No side lobes to produce spurious echoes Immune to local sound sources No disturbing acoustic emission Lidar currently more expensive in prototype form Detailed comparison of availability not yet carried out

More Related