Dissertation > Excellent graduate degree dissertation topics show

Study of Wake Detection Based on the Area of Pulse Light

Author: ZhouShaoJie
Tutor: LiuJiFang
School: Xi'an University of Electronic Science and Technology
Course: Optical Engineering
Keywords: wakes bubbles turbulence scattering of laser pulses
CLC: O351.3
Type: Master's thesis
Year: 2011
Downloads: 31
Quote: 0
Read: Download Dissertation

Abstract


The continuous improvement of technology of cancelling noise makes a challenge to the traditional sonar. It is necessary to study new methods to detect ships.Wakes are formed in the process of ship sailing. Methods based on wakes detection can be used to detect the location of wakes indirectly.In this paper, the optical scattering properties of the ship wakes and sea water are analyzed, several commonly used filtering method of scattering water are discussed, and the scattering mechanism of the wake is analyzed. The results show that the scattering mechanisms of turbulence and bubbles are different, and the effect is not the same. Based on the analysis of optical characteristics of the ship wakes, a method based on laser pulses area to detect wakes is proposed.Experimental study of the bubble and the turbulence on the impact of backward scattering is completed, and results show the wake will cause the area of scattering signal of pulsed light to change, the number of bubbles has relatively large impact on the area, so that the method is feasible, and this detection method could differentiate between the bubble wake and turbulence.

Related Dissertations

  1. Wind turbulence characteristics of the bulk particulate matter pollution impact study wind erosion,X513
  2. Numerical Simulation and Application of Frazil Ice Evolution in Diversion Channel in High Attitude and Cold Regions,TV134.9
  3. Research on the Tightly Focusing Property of Vector Beams,O436.3
  4. Experimental Study on the Effect of Entrapped Air on Quasi-saturated Soil Permeability,TU46
  5. Study on the Scouring Stability of Rubble Bed with the Effect of Ship Stern Flow,U657
  6. Empirical Analysis of the existence of the copper futures market bubble,F224
  7. Study and Development of the Industrial Tester of Non-Chlorine Bleaching,TS745
  8. The Research on the Price Bubble in Housing Market of Real Estate Industry in Chongqing,F293.3
  9. The Research on the Real Estate Bubbles of Shanghai,F293.3
  10. An Analysis of the U.S. Subprime Crisis in Terms of Effect Cause and Teaching,F831.59
  11. Analysis of Economic Crisis on Asset Virtualization from the Perspective of Comparing American and Japnese Economic Crisis,F113.7
  12. Experiment and Numerical Simulation Study on Flood Discharge and Energy Dissipation of Spillway,TV135.2
  13. Numerical Simulation of Hydrodynamic Characteristic in the Middle Bank Stilling Pool,TV135
  14. Experimental Study on Tunnels Sprayed Concrete Frost-resistance and Durability,U454
  15. Study on the Hydraulics for Stepped Chute Spillway in Simutasi Hydropower Station,TV135
  16. Numerical Simulation of the Influence of Agitator Structure on the Gas-Liquid Dispersion in a Stirred Tank,TQ019
  17. CDS -based real-time detection technology tail streamer noise suppression method,O436.2
  18. Numerical Simulation of New X-Flaring Gate Pier-Stepped Spillway-Bucket Typed Stilling Pool,TV135.2
  19. Hot water with floating jet stream Numerical Simulation and Experimental Study,TV131.6
  20. The Analysis of Economic Impact on the Appreciation of the Yen and the Inspiration to China,F832.6
  21. Study on Influence Factors of Zhejiang Family Business Sustainable Growth,F276.5

CLC: > Mathematical sciences and chemical > Mechanics > Fluid Mechanics > Ordinary fluid mechanics > Incompressible ideal fluid dynamics
© 2012 www.DissertationTopic.Net  Mobile