Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Analysis of backscattering characteristics of objects for remote laser voice acquisition

Not Accessible

Your library or personal account may give you access

Abstract

This study is focused on numerical simulation analysis and experimental study regarding the influence of backscattering characteristics of objects for long-range laser voice acquisition. Based on theoretical analysis, three parameters, including surface roughness of an object, incident angle, and refractive index, which will influence the performance of remote scattered reflection laser interference voice acquisition, are investigated and analyzed. After analysis and simulation, an experimental system is set up to demonstrate the influence of backscattering characteristics of an object. The results show that the restored amplitude of a voice signal decreases gradually, corresponding to an increase of surface roughness from 0.4 to 12.5 μm; the incident angle of the measured laser shall reside between 57.32 deg (1 rad) and 57.32deg (1rad); the optimal incident angle is 0 deg for all kinds of objects; and the metal object is a better choice of material selection. In addition, the restored amplitude of a voice signal rises with the attenuation coefficient of metal increasing. It also increases with the refractive index for a nonmetallic object. Comparing a metal to a nonmetallic object, the amplitude of voice signal varies significantly.

© 2014 Optical Society of America

Full Article  |  PDF Article
More Like This
Security-enhanced optical voice encryption in various domains and comparative analysis

Sudheesh K. Rajput and Osamu Matoba
Appl. Opt. 58(11) 3013-3022 (2019)

Target-in-the-loop remote sensing of laser beam and atmospheric turbulence characteristics

Mikhail A. Vorontsov, Svetlana L. Lachinova, and Arun K. Majumdar
Appl. Opt. 55(19) 5172-5179 (2016)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (15)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (3)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (9)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved