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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 29, Iss. 28 — Oct. 1, 1990
  • pp: 4133–4144

Doppler lidar atmospheric wind sensor: reevaluation of a 355-nm incoherent Doppler lidar

David Rees and I. Stuart McDermid  »View Author Affiliations


Applied Optics, Vol. 29, Issue 28, pp. 4133-4144 (1990)
http://dx.doi.org/10.1364/AO.29.004133


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Abstract

We reevaluate the performance of an incoherent Doppler lidar system operating at 354.7 nm, based on recent but well-proven Nd:YAG laser technology and currently available optical sensors. For measurements in the lower troposphere, up to ~5 km altitude, and also in the Junge-layer of the lower stratosphere, a wind component accuracy of ± 2 m/s and a vertical resolution of 1 km should be obtained with a single pulse from a 1-J laser, operating at Polar Platform altitudes (700–850 km) and high scan angles (55°). For wind measurements in the upper troposphere (above ~5 km altitude) and stratosphere (above and below the Junge layer) the concentration of scatterers is much lower and higher energies would be required to maintain ± 2 m/s accuracy and 1 km vertical resolution, using single laser pulses. Except for the region in the vicinity of the tropopause (10 km altitude), a 5-J pulse would be appropriate to make measurements in these regions. The worst case is encountered near 10 km altitude, where we calculate that a 15-J pulse would be required. To reduce this energy requirement, we would propose to degrade the altitude resolution from 1 km to 2–3 km, and also to consider averaging multiple pulses. Degrading the vertical and horizontal resolution could provide an acceptable method of obtaining the required wind accuracy without the penalty of using a laser of higher output power. We believe that a Doppler lidar system, employing a near ultraviolet laser with a pulse energy of 5 J, could achieve the performance objectives required by the major potential users of a global space-borne wind observing system.

© 1990 Optical Society of America

History
Original Manuscript: August 25, 1989
Published: October 1, 1990

Citation
David Rees and I. Stuart McDermid, "Doppler lidar atmospheric wind sensor: reevaluation of a 355-nm incoherent Doppler lidar," Appl. Opt. 29, 4133-4144 (1990)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-29-28-4133

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