Parameter retrieval of aircraft wake vortex based on its max–min distribution of Doppler velocities measured by a Lidar
Aircraft wake vortex is a sort of turbulence generated by a flying aircraft. It has attracted much attention in aviation safety area because it may cause a following aircraft to roll out of control. This study proposes a simple method to retrieve the characteristic parameters of an aircraft wake bas...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2019-09-01
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| Series: | The Journal of Engineering |
| Subjects: | |
| Online Access: | https://digital-library.theiet.org/content/journals/10.1049/joe.2019.0539 |
| _version_ | 1818949481079504896 |
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| author | Hang Gao Jianbing Li P.W. Chan K.K. Hon |
| author_facet | Hang Gao Jianbing Li P.W. Chan K.K. Hon |
| author_sort | Hang Gao |
| collection | DOAJ |
| description | Aircraft wake vortex is a sort of turbulence generated by a flying aircraft. It has attracted much attention in aviation safety area because it may cause a following aircraft to roll out of control. This study proposes a simple method to retrieve the characteristic parameters of an aircraft wake based on the max–min distribution of Doppler velocity over a RHI (range-height indicator). First, the vortex cores are determined by the Doppler velocity's cross-over structure. Second, the circulations are obtained by the velocity differences between the points above the vortex core and the corresponding below ones. During this process, the impact of background wind can be well mitigated. Basically, the new method is with a low computation cost and an acceptable accuracy. Its good performance has been verified by simulations and field detection data recorded in Hong Kong International Airport. |
| first_indexed | 2024-12-20T09:03:22Z |
| format | Article |
| id | doaj.art-185b3e1c10fa49af9372542f74e5643e |
| institution | Directory Open Access Journal |
| issn | 2051-3305 |
| language | English |
| last_indexed | 2024-12-20T09:03:22Z |
| publishDate | 2019-09-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Journal of Engineering |
| spelling | doaj.art-185b3e1c10fa49af9372542f74e5643e2022-12-21T19:45:48ZengWileyThe Journal of Engineering2051-33052019-09-0110.1049/joe.2019.0539JOE.2019.0539Parameter retrieval of aircraft wake vortex based on its max–min distribution of Doppler velocities measured by a LidarHang Gao0Jianbing Li1P.W. Chan2K.K. Hon3National University of Defense TechnologyNational University of Defense TechnologyHong Kong ObservatoryHong Kong ObservatoryAircraft wake vortex is a sort of turbulence generated by a flying aircraft. It has attracted much attention in aviation safety area because it may cause a following aircraft to roll out of control. This study proposes a simple method to retrieve the characteristic parameters of an aircraft wake based on the max–min distribution of Doppler velocity over a RHI (range-height indicator). First, the vortex cores are determined by the Doppler velocity's cross-over structure. Second, the circulations are obtained by the velocity differences between the points above the vortex core and the corresponding below ones. During this process, the impact of background wind can be well mitigated. Basically, the new method is with a low computation cost and an acceptable accuracy. Its good performance has been verified by simulations and field detection data recorded in Hong Kong International Airport.https://digital-library.theiet.org/content/journals/10.1049/joe.2019.0539airportsvorticeswakesvelocity measurementdoppler radarturbulenceoptical radaraircraftwindatmospheric boundary layervortex coreparameter retrievalaircraft wake vortexmax–min distributiondoppler velocityflying aircraftaviation safety areacharacteristic parametersvelocity differences |
| spellingShingle | Hang Gao Jianbing Li P.W. Chan K.K. Hon Parameter retrieval of aircraft wake vortex based on its max–min distribution of Doppler velocities measured by a Lidar The Journal of Engineering airports vortices wakes velocity measurement doppler radar turbulence optical radar aircraft wind atmospheric boundary layer vortex core parameter retrieval aircraft wake vortex max–min distribution doppler velocity flying aircraft aviation safety area characteristic parameters velocity differences |
| title | Parameter retrieval of aircraft wake vortex based on its max–min distribution of Doppler velocities measured by a Lidar |
| title_full | Parameter retrieval of aircraft wake vortex based on its max–min distribution of Doppler velocities measured by a Lidar |
| title_fullStr | Parameter retrieval of aircraft wake vortex based on its max–min distribution of Doppler velocities measured by a Lidar |
| title_full_unstemmed | Parameter retrieval of aircraft wake vortex based on its max–min distribution of Doppler velocities measured by a Lidar |
| title_short | Parameter retrieval of aircraft wake vortex based on its max–min distribution of Doppler velocities measured by a Lidar |
| title_sort | parameter retrieval of aircraft wake vortex based on its max min distribution of doppler velocities measured by a lidar |
| topic | airports vortices wakes velocity measurement doppler radar turbulence optical radar aircraft wind atmospheric boundary layer vortex core parameter retrieval aircraft wake vortex max–min distribution doppler velocity flying aircraft aviation safety area characteristic parameters velocity differences |
| url | https://digital-library.theiet.org/content/journals/10.1049/joe.2019.0539 |
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