Doppler lidar investigation of wake vortex transport between closely spaced parallel runways

AIAA Journal ◽  
1994 ◽  
Vol 32 (4) ◽  
pp. 805-810 ◽  
Author(s):  
Friedrich Kopp
Keyword(s):  
Wake Vortex ◽  
Doppler Lidar

scholarly journals Identification of Aircraft Wake Vortex Based on SVM

2020 ◽  
Vol 2020 ◽  
pp. 1-8
Author(s):  
Weijun Pan ◽  
Zhengyuan Wu ◽  
Xiaolei Zhang
Keyword(s):  
Environmental Parameters ◽  
Classification Model ◽  
Support Vector ◽  
Wake Vortex ◽  
Doppler Lidar ◽  
Pulsed Doppler ◽  
Wind Fields ◽  
Wake Turbulence ◽  
Aircraft Wake ◽  
Separation Standards

The aircraft wake vortex has important influence on the operation of the airspace utilization ratio. Particularly, the identification of aircraft wake vortex using the pulsed Doppler lidar characteristics provides a new knowledge of wake turbulence separation standards. This paper develops an efficient pattern recognition-based method for identifying the aircraft wake vortex measured with the pulsed Doppler lidar. The proposed method is outlined in two stages. (i) First, a classification model based on support vector machine (SVM) is introduced to extract the radial velocity features in the wind fields by combining the environmental parameters. (ii) Then, grid search and cross-validation based on soft margin SVM with kernel tricks are employed to identify the aircraft wake vortex, using the test dataset. The dataset includes wake vortices of various aircrafts collected at the Chengdu Shuangliu International Airport from Aug 16, 2018, to Oct 10, 2018. The experimental results on dataset show that the proposed method can identify the aircraft wake vortex with only a small loss, which ensures the satisfactory robustness in detection performance.

Sensitivity Analysis of Wake Vortex Parameters Measured by Doppler Lidar

2015 ◽  
Author(s):  
Takashi Misaka ◽  
Shigeru Obayashi ◽  
Anton Stephan ◽  
Frank N. Holzäpfel ◽  
Thomas Gerz
Keyword(s):  
Sensitivity Analysis ◽  
Wake Vortex ◽  
Doppler Lidar

Measurements of aircraft wake vortex parameters by a Stream Line Doppler lidar

2017 ◽  
Vol 30 (6) ◽  
pp. 588-595 ◽  
Author(s):  
I. N. Smalikho ◽  
V. A. Banakh ◽  
A. V. Falits
Keyword(s):  
Stream Line ◽  
Wake Vortex ◽  
Doppler Lidar ◽  
Aircraft Wake

Simulation of Wake Vortex Detection with Airborne Doppler Lidar

2000 ◽  
Vol 37 (6) ◽  
pp. 984-993 ◽  
Author(s):  
Denis Darracq ◽  
Alexandre Corjon ◽  
Frédéric Ducros ◽  
Mike Keane ◽  
Daniel Buckton ◽  
...  
Keyword(s):  
Wake Vortex ◽  
Doppler Lidar ◽  
Vortex Detection

Research on the Technique of Aircraft Wake Vortex Detection Based on 1.5 μm Doppler Lidar

2011 ◽  
Vol 40 (6) ◽  
pp. 811-817
Author(s):  
吴永华 WU Yong-hua ◽  
胡以华 HU Yi-hua ◽  
戴定川 DAI Ding-chuan ◽  
徐世龙 XU Shi-long ◽  
李今明 LI Jin-ming
Keyword(s):  
Wake Vortex ◽  
Doppler Lidar ◽  
Aircraft Wake ◽  
Vortex Detection

scholarly journals Aircraft Wake Vortex Measurement with Airborne Coherent Doppler Lidar

2008 ◽  
Vol 45 (4) ◽  
pp. 1148-1155 ◽  
Author(s):  
Stephan Rahm ◽  
Igor Smalikho
Keyword(s):  
Wake Vortex ◽  
Doppler Lidar ◽  
Coherent Doppler Lidar ◽  
Aircraft Wake

scholarly journals Two Parameter-Retrieval Algorithms of Aircraft Wake Vortex with Doppler Lidar in Clear Air

2020 ◽  
Vol 237 ◽  
pp. 08024
Author(s):  
Chun Shen ◽  
Jianbing Li ◽  
Hang Gao
Keyword(s):  
Optimization Method ◽  
Aviation Safety ◽  
Wake Vortex ◽  
Doppler Lidar ◽  
Conference Paper ◽  
Retrieval Algorithms ◽  
Aircraft Wake ◽  
Two Parameter ◽  
Parameter Retrieval

Aircraft wake is a pair of strong counter-rotating vortices generated behind an aircraft, which might be very hazardous to a flowing aircraft and the detection of which has attracted much attention in aviation safety field. This conference paper introduces two parameter-retrieval algorithms, i.e., Optimization method and Max-min method. They have been integrated into a toolbox and can retrieve the parameters of wake vortex efficiently and robustly.

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