Journal ArticleDOI
Aircraft Wake Vortex Detection and Measurement with Pulsed Solid-state Coherent Laser Radar
TLDR
In this paper, the authors present theoretical analysis and experimental results for pulsed 2 μm coherent laser radar (Lidar) systems for wake vortex detection and tracking at Denver Stapleton International Airport.Abstract:
Pulsed solid-state coherent laser radar (lidar) systems can measure radial wind velocity to precisions well below 1 m s−1 at spatial scales on the order of 30–50 m and to ranges of several kilometres. This capability is appropriate for a variety of measurement objectives in the airport terminal area. Wake vortex detection and tracking is one of the primary objectives currently being evaluated by regulatory agencies in the United States and elsewhere. Up to now, non-invasive measurement of wake vortex properties has been limited to short-range continuous-wave lidar systems. This paper discusses this application and presents theoretical analysis and experimental results for pulsed 2 μm coherent lidar. Detection, tracking, and measurement results are presented for sample DC10, 757, and 727 aircraft landings from a laser radar wake vortex database compiled in 1993 at Denver Stapleton International Airport.read more
Citations
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Journal ArticleDOI
Commercial aircraft wake vortices
TL;DR: In this article, the authors present a consolidated European view on the current status of knowledge of the nature and characteristics of aircraft wakes and of technical and operational procedures of minimizing and predicting the vortex strength and avoiding wake encounters.
Journal ArticleDOI
Single mode Tm and Tm,Ho:LuAG lasers for LIDAR applications
TL;DR: In this article, a Tm(10%),Ho(0.4%) and Tm,Ho:LuAG laser was developed as master oscillators for an airborne LIDAR system.
Journal ArticleDOI
Remote sensing of atmospheric wind velocities using solid-state and CO/sub 2/ coherent laser systems
R.M. Huffaker,R.M. Hardesty +1 more
TL;DR: Coherent lidar/laser radar systems have been used for the remote measurement of atmospheric wind velocity since 1966 as discussed by the authors and have been applied to detection and tracking of aircraft wake vortices, measurement of airborne wind fields during the space shuttle takeoff and landing, airborne wind shear detection, ground-based airport microburst windshear monitoring, meteorological research, and environmental monitoring.
Journal ArticleDOI
Applications of an Infrared Doppler Lidar in Detection of Wind Shear
C. M. Shun,Pak Wai Chan +1 more
TL;DR: Li et al. as mentioned in this paper developed an innovative GPScan (GPScan) strategy for the lidar, pointing the laser beam toward the approach and departure glide paths, with the changes in azimuth and elevation angles concerted.
Journal ArticleDOI
Measurement of Atmospheric Turbulence by 2-μm Doppler Lidar
TL;DR: In this article, two methods for the estimation of the turbulence energy dissipation rate (TEDR) from data measured by a 2-μm coherent Doppler lidar are described.
References
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Journal ArticleDOI
Statistical Fluid Mechanics: The Mechanics of Turbulence
TL;DR: In this article, the authors deal with the theory of hydrodynamic instability and the development of turbulence, the application of dimensional analysis, and the theories of similarity to turbulent flow in pipes, ducts, and boundary layers, as well as free turbulence.
Coherent laser radar at 2μm using solid - state lasers
Abstract: The development of a coherent laser radar system using 2- mu m Tm- and Tm, Ho-doped solid-state lasers, which is useful for the remote range-resolved measurement of atmospheric winds, aerosol backscatter, and differential absorption lidar (DIAL) measurements of atmospheric water vapor and CO/sub 2/ concentrations, is described. Measurements made with the 2- mu m coherent laser radar system, advances in the laser technology, and atmospheric propagation effects on 2- mu m coherent lidar performance are discussed. Results include horizontal atmospheric wind measurements to >20 km. vertical wind measurements to >5 km, near-horizontal cloud returns to 100 km, and hard target (mountainside) returns from 145 km. >
Journal ArticleDOI
Coherent laser radar at 2 mu m using solid-state lasers
Sammy W. Henderson,Paul Suni,Charley P. Hale,Stephen M. Hannon,James R. Magee,D.L. Bruns,E.H. Yuen +6 more
TL;DR: The development of a coherent laser radar system using 2- mu m Tm- and Tm, Ho-doped solid-state lasers, which is useful for the remote range-resolved measurement of atmospheric winds, aerosol backscatter, and differential absorption lidar (DIAL) measurements of atmospheric water vapor and CO/sub 2/ concentrations, is described.
Journal ArticleDOI
Eye-safe coherent laser radar system at 2.1 microm using Tm,Ho:YAG lasers.
TL;DR: An eye-safe pulsed coherent laser radar has been developed by using single-frequency Tm,Ho:YAG lasers and heterodyne detection.