Single-beam laser device for measuring the surface slope for landing a helicopter

Lebedko, E.G., Nguyen, Duc Tai, Nguyen, Van Chyong

Full text «Opticheskii Zhurnal»

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Publication in Journal of Optical Technology

For Russian citation (Opticheskii Zhurnal):

Нгуен В.Ч., Нгуен Д.Т., Лебедько Е.Г. Однолучевой лазерный измеритель угла наклона поверхности при посадке вертолёта // Оптический журнал. 2020. Т. 87. № 4. С. 62–65. http://doi.org/10.17586/1023-5086-2020-87-04-62-65

Nguyen V.Ch, Nguyen D.T., Lebedko E.G. Single-beam laser device for measuring the surface slope for landing a helicopter [in Russian] // Opticheskii Zhurnal. 2020. V. 87. № 4. P. 62–65. http://doi.org/10.17586/1023-5086-2020-87-04-62-65

For citation (Journal of Optical Technology):

V. Ch. Nguyen, D. T. Nguyen, and E. G. Lebed’ko, "Single-beam laser device for measuring the surface slope for landing a helicopter," Journal of Optical Technology. 87(4), 237-239 (2020). https://doi.org/10.1364/JOT.87.000237

Abstract:

A temporal method is proposed for estimating the slope of a landing site for a helicopter at night. The width of a pulse reflected from a surface under nonstationary irradiation is used as an informational parameter for estimating the surface slope angle. The receiver-amplification path bandwidth and the surface slope determination algorithm are validated with implementation of this method. A possible block scheme for implementing this method is proposed.

Keywords:

single-beam laser analyzer of space structure of landing surface

OCIS codes: 230.1150

References:

1. V. C. Nguyen and E. G. Lebed’ko, “Analysis of optical-location methods for determining the spatial structure of the surface when landing helicopters,” in Proceedings of the XIII International Conference on Applied Optics (2018), pp. 115–118.
2. E. G. Lebed’ko, L. F. Porfir’ev, and F. I. Khaitun, Theory and Calculation of Pulsed and Digital Opto-Electronic Systems (Mashinostroenie, Leningrad, 1984).
3. E. G. Lebed’ko, Pulsed Optical Location Systems (Lan’, St. Petersburg, 2014).
4. V. T. Nguyen and E. G. Lebed’ko, “Determination of reflective characteristics of elementary Lambert surfaces during nonstationary irradiation,” Izv. Vyssh. Uchebn. Zaved., Priborostr. 50(5), 63–69 (2007).
5. E. G. Lebed’ko and V. A. Bryzgalov, “Time interval extender,” USSR patent 74883 (1980).