Document Type

Article

Publication Date

11-1995

Publication Source

Optical Engineering

Abstract

A theoretical performance analysis of a heterodyne ladar system incorporating a single-mode fiber receiver has been performed. For our purposes, the performance parameters of interest are the coupling and mixing efficiency of the ladar receiver, as they relate to the overall system carrier-to-noise ratio. For a receiver incorporating a single-mode fiber mixer, the received and local-oscillator fields are matched both spatially and temporally at the detector, yielding 100% mixing efficiency. We have therefore focused our efforts on determining an expression for the efficiency with which a diffuse return from a purely speckle target can be coupled into the receiving leg of a monostatic, untruncated cw ladar system. Through numerical analysis, the expected coupling efficiency for a ladar system with negligible truncation of the transmit beam has been determined to be 30.6%.

Inclusive pages

3122-3129

ISBN/ISSN

0091-3286

Document Version

Published Version

Comments

Paper is made available for download in compliance with publisher policy on self-archiving and with author permission. Permission documentation is on file.

One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.

Publisher

Society of Photo Optical Instrumentation Engineers

Volume

34

Issue

11

Peer Reviewed

yes

Keywords

optical remote sensing, image processing, ladar, lidar, heterodyne, single-mode fibers, laser speckle

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