Time reversed photonic beamforming of arbitrary waveform ladar arrays

Joseph L. Cox; Henry Zmuda; Rebecca J. Bussjaeger; Reinhard K. Erdmann; Michael L. Fanto; Michael J. Hayduk; John E. Malowicki

doi:10.1117/12.723749

7 May 2007 Time reversed photonic beamforming of arbitrary waveform ladar arrays

Joseph L. Cox, Henry Zmuda, Rebecca J. Bussjaeger, Reinhard K. Erdmann, Michael L. Fanto, Michael J. Hayduk, John E. Malowicki

Author Affiliations +

Proceedings Volume 6572, Enabling Photonics Technologies for Defense, Security, and Aerospace Applications III; 657209 (2007) https://doi.org/10.1117/12.723749
Event: Defense and Security Symposium, 2007, Orlando, Florida, United States

Abstract

Herein is described a novel approach of performing adaptive photonic beam forming of an array of optical fibers with the expressed purpose of performing laser ranging. The beam forming technique leverages the concepts of time reversal, previously implemented in the sonar community, and wherein photonic implementation has recently been described for use by beamforming of ultra-wideband radar arrays. Photonic beam forming is also capable of combining the optical output of several fiber lasers into a coherent source, exactly phase matched on a pre-determined target. By implementing electro-optically modulated pulses from frequency chirped femtosecond-scale laser pulses, ladar waveforms can be generated with arbitrary spectral and temporal characteristics within the limitations of the wide-band system. Also described is a means of generating angle/angle/range measurements of illuminated targets.

Citation Download Citation

Joseph L. Cox, Henry Zmuda, Rebecca J. Bussjaeger, Reinhard K. Erdmann, Michael L. Fanto, Michael J. Hayduk, and John E. Malowicki "Time reversed photonic beamforming of arbitrary waveform ladar arrays", Proc. SPIE 6572, Enabling Photonics Technologies for Defense, Security, and Aerospace Applications III, 657209 (7 May 2007); https://doi.org/10.1117/12.723749

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KEYWORDS

LIDAR

Sensors

Target detection

Signal processing

Modulation

Pulsed laser operation

Fiber Bragg gratings

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