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Questions on Lidars Use for Control and Detection of Forest Fires in Mountainous Zones

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J.S. Mekhtiyev

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UDС

630*432

DOI:

10.17238/issn0536-1036.2015.4.68

Abstract

The brief review of organization condition of lidar control for detection of forest fires in mountainous zones has given. It is noted, that the forest fires take place in ravines or flanks of hills, and as a result, lidars, installed at the elevated sites detects heavily attenuated smoke at the background of not clean but partly polluted air at the flanks of hills. The configuration of the locality plays a significant role in formation of resulting at the output of lidar system signal/noise ratio in mountainous zone. At the same time the total effectiveness of lidar system functioning depends on not only signal/noise ratio at the output of detection system and its quickness of operation, but also on 3D configuration of forest zone, where the lidar system should be installed. The aim of the article is analysis of possibility for selection of optimum operation regime of lidar control system and development on this basis the new configuration of net designated for lidar control of forest fires in mountainous zones. In order to choose the configuration of the control net the optimization of lidar detection of forest fires in ravines of mountainous zones is carried out. The aim of optimization of lidar control is earlier detection of weak smoke. The limitation condition applied to integral transmission of atmosphere on route of control is formulated. The variational task of non-conditional optimization with limitation is formulated and solved. It is shown, that the optimum regime of lidar control of forest fire at the ravines of mountainous zones is provision of inverse relation between atmospheric transmission and the controlled distance. The recommendations on optimum development of lidar system for control of forest fires in mountainous zones are given.

Authors

  • J.S. Mekhtiyev, Candidate of Engineering, Associate Professor

    National Aviation Academy,
    Bina, 25
    th km, Azerbaijan, AZ10145, Baku;
    e-mail: 
    ekologiya.maa@mail.ru

Affiliation

National Aviation Academy, Bina, 25th km, Azerbaijan, AZ10145, Baku

Keywords

forest fires, lidar control, atmosphere, optimization, early detection, transmission

References

  1. Lavrov A., Utkin A.B., Vilar R., Conde O., Fajardo M., LO Silva, Pires M. Experimental and theoretical of forest fire detection by a portable eye-safe lidar operating at 1540 nm. Proceedings SPIE 04/2009; 7131:71312J. DOI:10.11117/12.816515
  2. Porter J.N., Sharma S.K., Lienert B.R. Obtaining calibrated marine aerosol extinction measurements using horizontal lidar measurements, differential lidar target measurements and a polar nephelometer. SPIE Meeting Proceedings, Japan 2000.
  3. Utkin A.B., Fernandes A., Simoes F., Lavrov A., Vilar R. Feasibility of forest-fire smoke detection using lidar. International Journal of Wildland Fire, 2013, no. 12, pp. 159–166.
  4. Utkin A.B., Fernandes A., Simoes F., Vilar R. Forest-fire detection by means of lidar. Available at: http: // www.millpress.nl/chop/aboeks/ICFFR4/pdf/057.pdf.
  5. Utkin A.B., Lavrov A.V., Costa L., Simoes F., Vilar R. Detection of small forest fires by lidar. Applied Physics. 2002, B.74, pp. 77–83. DOI:10.1007/s003400100772.


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