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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 52, Iss. 4 — Feb. 1, 2013
  • pp: 579–599

Coherent and incoherent synthetic-aperture imaging ladars and laboratory-space experimental demonstrations [Invited]

Liren Liu  »View Author Affiliations


Applied Optics, Vol. 52, Issue 4, pp. 579-599 (2013)
http://dx.doi.org/10.1364/AO.52.000579


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Abstract

This paper reviews our studies on coherent and incoherent synthetic-aperture imaging ladars (SAILs). Using optical diffraction, a systematic theory of side-looking SAIL was mathematically formulated and the necessary conditions for assuring a correct phase history are established. Based on optical transformation and regulation of wavefront, a down-looking SAIL of two distinctive architectures was invented and the basic principle, systematic theory, design equations, and necessary conditions are presented. An incoherent spotlight-mode SAIL was proposed, and detailed mathematically. To validate the concepts, laboratory experiments were conducted. The spatially and temporally dependent laser speckles are analyzed by applying the partial coherence theorem, and proposals to reduce their effect are given. Optical antennas and their components are discussed. It is shown that for down-looking SAIL the width of the scanning strip may be greatly increased without loss of high resolution, and the influences from atmospheric turbulence and unmodeled line-of-sight motion can be automatically compensated.

© 2013 Optical Society of America

OCIS Codes
(100.2000) Image processing : Digital image processing
(100.3010) Image processing : Image reconstruction techniques
(110.0110) Imaging systems : Imaging systems
(280.3640) Remote sensing and sensors : Lidar
(280.6730) Remote sensing and sensors : Synthetic aperture radar
(110.3175) Imaging systems : Interferometric imaging

ToC Category:
Remote Sensing and Sensors

History
Original Manuscript: August 22, 2012
Manuscript Accepted: November 26, 2012
Published: January 24, 2013

Virtual Issues
(2013) Advances in Optics and Photonics

Citation
Liren Liu, "Coherent and incoherent synthetic-aperture imaging ladars and laboratory-space experimental demonstrations [Invited]," Appl. Opt. 52, 579-599 (2013)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-52-4-579

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