Design of airport wake vortex monitoring system based on 1.5-μm pulsed coherent Doppler lidar

Abstract

To shun the vortex hazard, the airport wake vortex monitoring system based on 1.5-μm pulsed coherent Doppler lidar is designed successfully in this paper. Based on the realistic analytical model, the wake vortex generated by airbus A340 under typical flight condition is simulated. Then the principle of airport wake vortex monitoring is introduced, and the work flow of the monitoring system is also presented. Moreover, based on the mechanism of vortex coherent detection and typical system parameters, both detection SNR and detection precision are obtained through numerical simulations. When the system outputs 2 J energy, the coherent detection SNR at 10 km distance is up to 23.452, and detection precision can reach 0.328 m/s. With the wake vortex monitoring experiment of A340, some vortex parameters are estimated. Due to these results comparatively coinciding with the previous simulation conclusions, the ability of Doppler lidar for full-scale wake vortex characterization and real time measurement is demonstrated. The study shows that the wake vortex detection based on 1.5-μm pulsed coherent Doppler lidar has the advantages of high accuracy and far distance, and the designed airport wake vortex monitoring system has proved to be effective and feasible, which has significant development and application prospect in the aspect of assuring flight security and increasing airport capacity.

Keywords

Vortex / Lidar / Wake Vortex / Coherent Detection / Vortex Core Radius

References

[1] DarracqD., CorjonA., DucrosF.. Journal of Aircraft, 2000, 37: 984

[2] KeaneM., BucktonD., RedfernM.. Journal of Aircraft, 2002, 39: 850

[3] SoutisC., FleckN. A.. Journal of Composite Materials, 1990, 24: 536

[4] KoppF., RahmS., SmalikhoI.. Journal of Atmospheric and Oceanic Technology, 2004, 21: 194

[5] Kato H and Obayashi S, 1st AIAA Atmospheric and Space Environments Conference, 1 (2009).

[6] Neece R, Britt C L and White J H, 5th NASA Integrated Communications, Navigation, and Surveillance (ICNS) Conference and Workshop, 1 (2005).

[7] Mackey S M and Burnham D C, 27th AIAA Aeroacoustics Conference, 2537 (2006).

[8] HansonJ. M., MarcotteF. J.. Apl Technical Digest, 1997, 18: 348

[9] BarbarescoF., MeierU.. Comptes Rendus Physique, 2010, 11: 54

[10] FrehlichR., SharmanR.. Journal of Atmospheric and Oceanic Technology, 2005, 22: 117

[11] KoppF., SmalikhoI., RahmS.. AIAA Journal, 2003, 41: 1081

[12] ConstantG., FoordR., ForresterP. A.. Journal of Modern Optics, 1994, 41: 2153

[13] HarrisM., VaughanJ. M., HueneckeK.. Aerosp. Sci. Technol., 2000, 4: 363

[14] Yong H F, Laser Radar, Space Navigation Press, 1992.

[15] HenrikssonM.. Applied Optics, 2005, 44: 5140

[16] TaoX. H., HuY. H., ZhaoN. X.. The Journal of Light Scattering, 2008, 20: 91

[17] YuT. Y., OrescaninM. B., ZrnicD. S.. Journal of Atmospheric and Oceanic Technology, 2007, 24: 616