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Code 912, Principle Investigator: Mr. Bruce Gentry NASA Academy Research Associate Jeremy Dobler

Wind Lidar!. Code 912, Principle Investigator: Mr. Bruce Gentry NASA Academy Research Associate Jeremy Dobler. Why Study Winds?. Winds are the most important variable studying dynamics and transport in the atmosphere.

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Code 912, Principle Investigator: Mr. Bruce Gentry NASA Academy Research Associate Jeremy Dobler

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  1. Wind Lidar! Code 912, Principle Investigator: Mr. Bruce Gentry NASA Academy Research Associate Jeremy Dobler

  2. Why Study Winds? • Winds are the most important variable studying dynamics and transport in the atmosphere. • Wind measurements are critical to improvement of numerical weather prediction models. • Global wind measurements are essential to NASA’s Earth Science Enterprise mission. • They can be used to study planetary atmospheric dynamics. • Commercial and military aircraft would benefit from clear air wind shear detection as well.

  3. Backscattered Spectrum Aerosol (l-2) Molecular (l-4) Frequency Doppler Lidar Wind Measurement Concept

  4. My Contribution Work and Fun With: Optics Software Writing Electronics

  5. 355 nm Receiver Setup

  6. Moving From Larger to Smaller Systems.

  7. Miniature Dual-Frequency Lidar Components • Solid Fabry-Perot etalon • 95% reflectivity @ 860 nm • 15 mm gap • Finesse ~ 61 FSR ~ 6.66 GHz • Semi-Conducting Diode • Laser (AlGaAs) •  = 852.2 nm • Power ~ 150 mW CW

  8. Mini-Lidar Breadboard Setup

  9. Future Work! • Complete software interface to automate the modulation of the laser and lock the signal on the edge of the Fabry-Perot etalon filter. • Integrate breadboard system into a mobile container. • Verify velocity measurements on a hard target in lab • Take actual atmospheric data in the field demonstrating the mini-lidar system.

  10. Thank You To: • The Wisconsin Space Grant Consortium • Goddard Space Flight Center University Programs and the Director’s Discretionary Fund. Also to: • The Academy Staff and all of the participants of this program. • The Staff and Faculty at UW-L

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