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Multiple-return laser radar for three-dimensional imaging through obscurations.

Bradley W Schilling1, Dallas N Barr, Glen C Templeton

  • 1US Army Communications and Electronics Command Research, Development and Engineering Center, Night Vision and Electronic Sensors Directorate, Fort Belvoir, Virginia 22060, USA. bradley.schilling@nvl.army.mil

Applied Optics
|May 25, 2002
PubMed
Summary

This study developed a compact imaging laser radar for target detection through foliage and camouflage. The system demonstrated effective range accuracy and imaging capabilities, even with multiple signal returns.

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Area of Science:

  • Optics and Photonics
  • Remote Sensing Technology
  • Laser Systems Engineering

Background:

  • Effective targeting is crucial in various applications, but obscured conditions pose significant challenges.
  • Imaging through obscurants like foliage and camouflage netting requires advanced sensor technologies.
  • Laser radar (LIDAR) offers potential for high-resolution imaging in challenging environments.

Purpose of the Study:

  • To construct and evaluate a compact imaging laser radar system.
  • To investigate phenomenological issues in targeting through obscurations.
  • To assess the system's capability for imaging through foliage and camouflage netting.

Main Methods:

  • Utilized a compact imaging laser radar system.
  • Employed a Nd:YAG microchip laser (1.06 microm wavelength, 1.2-ns pulses, 3-kHz rate).

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  • Incorporated an indium gallium arsenide avalanche photodiode detector and a 2 giga samples/s digitization rate.

    • Main Results:

    • Demonstrated range accuracy of the laser radar system.
    • Successfully imaged targets through camouflage netting.
    • Characterized multiple returns from deciduous tree lines, providing data on signal penetration and scattering.

    Conclusions:

    • The developed compact imaging laser radar is effective for targeting through obscurations.
    • The system shows promise for applications requiring imaging through foliage and camouflage.
    • Further analysis of multiple returns can enhance understanding of signal propagation in cluttered environments.