Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Differential synthetic aperture ladar.

Eddy A Stappaerts1, E T Scharlemann

  • 1Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA.

Optics Letters
|October 4, 2005
PubMed
Summary

A new differential synthetic aperture ladar (SAL) concept significantly reduces platform and laser requirements. This advanced imaging technique eases constraints on line-of-sight vibrations and laser frequency stability for improved SAL performance.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Analysis of the scalability of diffraction-limited fiber lasers and amplifiers to high average power.

Optics express·2008
Same author

Breadboard testing of a phase-conjugate engine with an interferometric wave-front sensor and a microelectromechanical systems-based spatial light modulator.

Applied optics·2004
Same author

Open- and closed-loop aberration correction by use of a quadrature interferometric wave-front sensor.

Optics letters·2004
See all related articles

Area of Science:

  • Optics and Photonics
  • Remote Sensing
  • Signal Processing

Background:

  • Conventional synthetic aperture ladar (SAL) demands stringent platform stability and high laser frequency stability.
  • Existing SAL systems face limitations due to platform motion and environmental factors like atmospheric turbulence.
  • The need for less constrained and more adaptable SAL systems is critical for broader applications.

Purpose of the Study:

  • To introduce and analyze a novel differential synthetic aperture ladar (SAL) concept.
  • To demonstrate the relaxation of platform and laser requirements compared to traditional SAL.
  • To evaluate the performance of the differential SAL technique across various laser wavelengths and environmental conditions.

Main Methods:

  • Development of a differential SAL mathematical model.
  • Analytical investigation of reduced line-of-sight translation-vibration constraints.
  • Modeling of laser frequency stability relaxation.
  • Simulation of speckle and atmospheric turbulence effects on the differential SAL system.

Main Results:

  • The differential SAL concept significantly relaxes line-of-sight translation-vibration constraints by several orders of magnitude.
  • Laser frequency stability requirements are typically relaxed by an order of magnitude.
  • The technique shows particular advantages for shorter laser wavelengths, including ultraviolet to mid-infrared.
  • Analytical and modeling results quantify the impact of speckle and atmospheric turbulence.

Conclusions:

  • The differential SAL approach offers a more practical and less demanding alternative to conventional SAL.
  • This technique enhances the feasibility of SAL systems in diverse and less controlled environments.
  • The findings support the advancement of imaging and remote sensing technologies through relaxed hardware constraints.

Related Experiment Videos