Retrieval of Droplet size Density Distribution from Multiple field of view Cross polarized Lidar Signals: Theory and Experimental Validation

Abstract

Multiple-field-of-view (MFOV) secondary-polarization lidar signals are used to calculate the particle-size density distribution (PSD) at the base of a cloud. At the cloud base, multiple scattering is weak and single backscattering is predominant by many orders of magnitude. Because secondary polarization is a direct measure of multiple scattering, it is therefore advantageous to use secondary polarization. A mathematical relation among the PSD, the lidar fields of view, the scattering angles, and the angular depolarization is derived to facilitate use of secondary polarization. The model is supported by experimental MFOV lidar measurements carried out in a controlled environment, and its limitations arid restrictions are discussed.

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Document Details

Document Type
Technical Report
Publication Date
Jun 02, 2016
Accession Number
AD1003734

Entities

People

  • Christian Bastille
  • Gilles Roy
  • Gilles Vallee
  • Luc Bisonnette

Tags

Communities of Interest

  • C4I

DTIC Thesaurus Topics

  • Backscattering
  • Controlled Environment
  • Depolarization
  • Detection
  • Diffraction
  • Distribution Functions
  • Electromagnetic Radiation
  • Electronic Mail
  • Light Sources
  • Measurement
  • Particle Size
  • Particles
  • Peak Values
  • Polarization
  • Rayleigh Scattering
  • Scattering

Fields of Study

  • Physics

Readers

  • Aerosol Science/Aerosol Physics
  • Atmospheric Remote Sensing.
  • Electromagnetic Wave Scattering and Antenna Radiation Engineering