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Parametric Study of a 10.6-micro Laser Radar.

R A Brandewie, W C Davis

    Applied Optics
    |February 2, 2010
    PubMed
    Summary

    This study details a 10.6-micrometer laser radar system, demonstrating its performance with noncooperative targets up to 8 km. The system approaches quantum-limited operation and provides valuable data on atmospheric scattering and scintillation.

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    Area of Science:

    • Optical Engineering
    • Remote Sensing
    • Laser Technology

    Background:

    • Laser radar (LIDAR) systems are crucial for remote sensing applications.
    • Understanding performance limitations and environmental effects is key for accurate measurements.
    • Heterodyne detection offers high sensitivity in laser radar systems.

    Purpose of the Study:

    • To conduct a parametric study of a 10.6-micrometer laser radar system.
    • To evaluate system performance with noncooperative targets at extended ranges.
    • To investigate atmospheric effects and target-induced phenomena on laser radar returns.

    Main Methods:

    • Utilized a 10.6-micrometer laser radar with heterodyne detection and an offset local oscillator.
    • Acquired data from various noncooperative targets up to 8 km.
    • Measured signal-to-noise ratio, scattering coefficients, depolarization, scintillation, and frequency broadening.

    Main Results:

    • System performance is within a factor of 4 of quantum-limited operation.
    • Scattering coefficients varied from 1.05 x 10(-8) m(-1) to 4.21 x 10-(7) m-(1) with changing visibility.
    • Target-induced scintillation was generally larger than atmospheric scintillation, which was less severe than for visible wavelengths.

    Conclusions:

    • The 10.6-micrometer laser radar system demonstrates robust performance for remote sensing.
    • The study provides critical data on atmospheric and target interactions relevant to laser radar applications.
    • The system's performance and the characterization of environmental effects validate its utility for various applications.

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