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 Video

Updated: Jun 6, 2026

Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station
05:57

Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station

Published on: April 1, 2020

Photorefractive processing for large adaptive phased arrays.

R T Weverka, K Wagner, A Sarto

    Applied Optics
    |November 19, 2010
    PubMed
    Summary

    This study introduces an adaptive optical processor using photorefractive crystals for phased-array radar. It steers beams to desired signals and nulls jammers, offering a novel, efficient processing algorithm.

    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

    Cellular functions of 14-3-3 zeta in apoptosis and cell adhesion emphasize its oncogenic character.

    Oncogene·2007
    Same author

    Estimations of daily energy and nutrient availability based on nationally representative household budget survey data. The Data Food Networking (DAFNE) project.

    Public health nutrition·2007
    Same author

    Distal monosomy 16p13.3/distal trisomy 2p24.2-pter: molecular-cytogenetic characterisation and phenotype.

    Genetic counseling (Geneva, Switzerland)·2007
    Same author

    Tools for multimode quantum information: modulation, detection, and spatial quantum correlations.

    Physical review letters·2007
    Same author

    Assessment of cognitive functions before and after stereotactic interstitial radiosurgery of hypothalamic hamartomas in patients with gelastic seizures.

    Epilepsy & behavior : E&B·2007
    Same author

    Serum resistin increases in a postprandial state during liquid meal challenge test in healthy human subjects.

    Journal of endocrinological investigation·2006

    Area of Science:

    • Optical processing
    • Phased-array radar systems
    • Holographic data storage

    Background:

    • Adaptive null-steering phased-array optical processors are crucial for signal detection in complex environments.
    • Existing systems face challenges in handling correlated jammers and require significant processing hardware.
    • Photorefractive crystals offer unique properties for optical signal processing applications.

    Purpose of the Study:

    • To describe an adaptive null-steering phased-array optical processor utilizing photorefractive crystals.
    • To demonstrate a novel beam-steering processor capable of identifying signal arrival angles and nulling narrow-band jammers.
    • To introduce a new algorithm for phased-array radar processing with reduced hardware requirements.

    Main Methods:

    • Utilizing a photorefractive crystal for time integration of adaptive weights.
    • Employing feedback-correlation detection for nulling narrow-band jammers.
    • Leveraging the angular selectivity of volume holograms for adaptive beam steering and null formation.

    Main Results:

    • Experimental demonstration of a simplified adaptive phased-array radar processor.
    • Successful nulling of narrow-band jammers while steering the array towards the desired signal.
    • Development of a new algorithm requiring fewer tapped-delay lines than classic beam formers.

    Conclusions:

    • The described optical processor effectively steers beams and nulls jammers using photorefractive crystals.
    • The new holographic algorithm offers a computationally efficient and scalable solution for phased-array radar.
    • A single photorefractive crystal can implement millions of adaptive weights, enabling large-scale radar systems with minimal hardware.

    More Related Videos

    Time Multiplexing Super Resolving Technique for Imaging from a Moving Platform
    06:25

    Time Multiplexing Super Resolving Technique for Imaging from a Moving Platform

    Published on: February 12, 2014

    Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
    08:39

    Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

    Published on: January 28, 2019

    Related Experiment Videos

    Last Updated: Jun 6, 2026

    Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station
    05:57

    Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station

    Published on: April 1, 2020

    Time Multiplexing Super Resolving Technique for Imaging from a Moving Platform
    06:25

    Time Multiplexing Super Resolving Technique for Imaging from a Moving Platform

    Published on: February 12, 2014

    Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
    08:39

    Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

    Published on: January 28, 2019