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

Abstract

Tianjin University of Technology and Springer-Verlag Berlin Heidelberg 2011 C To shun the vortex hazard, the airport wake vortex monitoring system based on 1.5-m 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-m 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.

Monitoring Critical Infrastructure Using 3D LiDAR Point Clouds

“…A terminal Doppler weather radar (TDWR) has been used to detect and warn low-level wind shear. While the TDWR has proved to be effective in rainy weather, reports received from aircraft pilots landing at or taking off from the airport Figure 18: Sketch map of airport wake vortex monitoring [79].…”

Observation of Aircraft Wake Vortex Evolution under Crosswind Conditions by Pulsed Coherent Doppler Lidar

“…The technical specifications of Wind3D 6000 scanning wind lidar are given in Table 2. 1 The sign of the radial velocity indicates the direction of aerosol movement. "+" means that the aerosol is moving away from the PCDL; "−" means that the aerosol is moving in the direction close to the PCDL.…”

“…Aircraft wake vortices are rapid contra-rotating air masses created by the lift force of the wings. These vortices always come in pairs and may cause serious hazards to closely following aircraft, especially during take-off and landing phases [1,2]. If the following aircraft flies into the wake vortex areas, there will be adverse influences on the subsequent flight such as increased structural dynamic loads, loss of the stable flight condition, and induced rolling moment [3].…”